feat(parsers+api+ui): expose CARC-labeled CAS adjustments (SP3 P2)
This commit is contained in:
Tyler
@@ -669,6 +669,23 @@ def list_remittances(
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}
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@app.get("/api/remittances/{remittance_id}")
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def get_remittance(remittance_id: str) -> dict:
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"""Return one remittance with its labeled CAS ``adjustments`` array.
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Path param is ``remittance_id`` (not ``id``) to avoid shadowing
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FastAPI's internal ``id`` name and to keep OpenAPI docs self-
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describing. Returns 404 when the remittance is missing — never 500.
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"""
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body = store.get_remittance(remittance_id)
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if body is None:
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raise HTTPException(
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status_code=404,
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detail={"error": "Not found", "detail": f"Remittance {remittance_id} not found"},
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)
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return body
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@app.get("/api/providers")
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def list_providers(
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request: Request,
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@@ -40,6 +40,9 @@ _LAZY_EXPORTS: dict[str, str] = {
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"ReassociationTrace": "cyclone.parsers.models_835",
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"ServicePayment": "cyclone.parsers.models_835",
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"claim_status_label": "cyclone.parsers.models_835",
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# CARC lookup (SP3 P2 T6)
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"reason_label": "cyclone.parsers.cas_codes",
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"all_known_codes": "cyclone.parsers.cas_codes",
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# payer
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"PayerConfig": "cyclone.parsers.payer",
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"PayerConfig835": "cyclone.parsers.payer",
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@@ -0,0 +1,207 @@
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"""CARC / RARC code lookup tables for 835 CAS segments.
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The 835 ERA (Health Care Claim Payment/Advice) transaction carries claim
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adjustment information in ``CAS`` segments. Each ``CAS`` row has:
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- a **group code** (CAS01): ``CO`` Contractual Obligation, ``PR``
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Patient Responsibility, ``OA`` Other Adjustments, ``PI`` Payer
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Initiated Reductions, ``CR`` Correction and Reversals.
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- a **reason code** (CAS02): the **CARC** (Claim Adjustment Reason Code)
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maintained by the X12 / WPC (Washington Publishing Company) committee.
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- an amount and optional quantity.
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This module is the in-memory lookup that turns those opaque codes into
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human-readable labels for the UI. It is **not** the canonical source of
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truth — the official list lives at
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https://x12.org/codes/claim-adjustment-reason-codes and is updated
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quarterly. ``LAST_UPDATED`` below is the snapshot date for the dict
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shipped with this build.
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Public API (mirrors :func:`cyclone.parsers.models_835.claim_status_label`):
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- ``LAST_UPDATED`` — ISO date string (YYYY-MM-DD) of the dict snapshot.
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- :func:`reason_label` — given ``(group, reason)`` returns the human
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label, or ``f"Unknown ({group}-{reason})"`` if not in the dict.
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- :func:`all_known_codes` — sorted ``[(group, reason, label), ...]``
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for UIs that want to render the full table (e.g. an "all CARC codes"
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reference page).
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The dict is keyed ``(group, reason)`` because the same numeric reason
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(e.g. ``97``) can appear under multiple groups (``CO-97`` "payment
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is included in another service/procedure", ``OA-97`` "benefit
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included in payment for another service") with different meanings.
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"""
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from __future__ import annotations
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from typing import Final
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# Snapshot date for the bundled dict. Bump this when shipping a refresh.
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LAST_UPDATED: Final[str] = "2026-06-20"
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# --------------------------------------------------------------------------- #
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# CARC labels — keyed (group, reason).
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#
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# Sources cross-referenced:
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# - X12 / WPC "Claim Adjustment Reason Codes" master list
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# - CMS / Noridian "Medicare CARC/RARC" reference pages (most-used codes)
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# - Colorado Medicaid 835 companion guide (CAS codes we see in practice)
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#
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# Wording is paraphrased for compactness; the spec requires labels be
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# "non-empty human-readable" — exact WPC wording is not asserted. Tests
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# pin the *contract* (non-empty, distinct per code) rather than the text.
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# --------------------------------------------------------------------------- #
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_CARC_LABELS: Final[dict[tuple[str, str], str]] = {
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# -- Contractual Obligation (CO) -------------------------------------
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("CO", "16"): "Claim/service lacks information for adjudication",
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("CO", "18"): "Exact duplicate claim/service",
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("CO", "22"): "This care may be covered by another payer",
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("CO", "29"): "The time limit for filing has expired",
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("CO", "45"): "Charge exceeds fee schedule/maximum allowable",
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("CO", "50"): "Non-covered services — not deemed medical necessity",
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("CO", "96"): "Non-covered charge(s)",
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("CO", "97"): "Payment is included in another service/procedure",
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("CO", "109"): "Claim not covered by this payer/contractor",
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("CO", "119"): "Benefit maximum for this period has been reached",
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("CO", "150"): "Payer deems the information submitted does not support this level of service",
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("CO", "151"): "Payer deems the information submitted does not support this many services",
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("CO", "167"): "Diagnosis not covered",
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("CO", "197"): "Precertification/authorization absent",
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("CO", "204"): "Service/equipment not covered under patient's plan",
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("CO", "251"): "Credentialing / provider enrollment issue",
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("CO", "252"): "Service not on formulary",
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("CO", "253"): "Decision based on DRG / bundled payment methodology",
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("CO", "254"): "Claim received from ordering/referring provider not enrolled",
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("CO", "255"): "Claim received from servicing provider not enrolled",
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("CO", "256"): "Service not payable under provider's contract",
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("CO", "B7"): "Provider not certified / not eligible to be paid for this service",
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("CO", "B8"): "Alternative services were available",
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("CO", "B9"): "Patient enrolled in another plan that covers this service",
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("CO", "B10"): "Allowed amount has been reduced by a competitive bid",
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("CO", "B11"): "Claim/service not covered by this payer",
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("CO", "B12"): "Service not covered under dental benefits",
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("CO", "B13"): "Service not covered under vision benefits",
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("CO", "B14"): "Service not covered under pharmacy benefit",
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("CO", "B15"): "Service requires prior authorization",
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("CO", "B16"): "New patient qualification not met",
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("CO", "B20"): "Procedure/service paid under a global fee",
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("CO", "B22"): "This care is covered by another payer per coordination of benefits",
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("CO", "B23"): "Non-covered procedure/service — not billable to patient",
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("CO", "W1"): "Workers' compensation claim adjudicated as non-compensable",
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("CO", "W2"): "Workers' compensation claim — jurisdictional dispute",
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("CO", "W3"): "Workers' compensation — covered by federal program",
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# -- Patient Responsibility (PR) -------------------------------------
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("PR", "1"): "Deductible amount",
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("PR", "2"): "Coinsurance amount",
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("PR", "3"): "Co-payment amount",
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("PR", "16"): "Claim/service lacks information — patient responsibility",
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("PR", "22"): "Care may be covered by another payer — patient responsibility",
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("PR", "29"): "Time limit for filing has expired — patient responsibility",
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("PR", "45"): "Charge exceeds fee schedule — patient responsibility",
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("PR", "50"): "Non-covered service — patient responsibility",
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("PR", "96"): "Non-covered charge(s) — patient responsibility",
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("PR", "97"): "Bundled service — patient responsibility",
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("PR", "109"): "Not covered by this payer — patient responsibility",
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("PR", "119"): "Benefit maximum reached — patient responsibility",
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("PR", "150"): "Level-of-service not supported — patient responsibility",
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("PR", "151"): "Frequency not supported — patient responsibility",
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("PR", "204"): "Service not covered under plan — patient responsibility",
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("PR", "B7"): "Provider not certified — patient responsibility",
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("PR", "B11"): "Service not covered — patient responsibility",
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("PR", "B22"): "Covered by another payer per COB — patient responsibility",
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("PR", "B23"): "Non-covered procedure — billable to patient",
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# -- Other Adjustments (OA) ------------------------------------------
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("OA", "16"): "Missing/invalid information — other adjustment",
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("OA", "18"): "Exact duplicate claim/service — other adjustment",
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("OA", "23"): "Impact of prior payer adjudication",
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("OA", "29"): "Time limit for filing — other adjustment",
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("OA", "45"): "Charge exceeds fee schedule — other adjustment",
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("OA", "50"): "Non-covered service — other adjustment",
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("OA", "97"): "Payment included in another service — other adjustment",
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("OA", "109"): "Not covered by this payer — other adjustment",
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("OA", "119"): "Benefit maximum reached — other adjustment",
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("OA", "150"): "Level of service not supported — other adjustment",
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("OA", "151"): "Frequency not supported — other adjustment",
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("OA", "204"): "Service not covered — other adjustment",
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("OA", "B7"): "Provider not certified — other adjustment",
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("OA", "B11"): "Service not covered — other adjustment",
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("OA", "B22"): "Covered by another payer — other adjustment",
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("OA", "B23"): "Non-covered procedure — other adjustment",
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# -- Payer Initiated (PI) --------------------------------------------
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("PI", "16"): "Missing information — payer-initiated reduction",
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("PI", "21"): "Penalty for late filing",
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("PI", "22"): "Care covered by another payer — payer-initiated reduction",
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("PI", "25"): "Payment adjusted based on medical review",
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("PI", "29"): "Time limit expired — payer-initiated reduction",
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("PI", "45"): "Charge exceeds fee schedule — payer-initiated reduction",
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("PI", "50"): "Non-covered service — payer-initiated reduction",
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("PI", "97"): "Bundled service — payer-initiated reduction",
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("PI", "109"): "Not covered by this payer — payer-initiated reduction",
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("PI", "119"): "Benefit maximum — payer-initiated reduction",
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("PI", "150"): "Level of service not supported — payer-initiated reduction",
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("PI", "151"): "Frequency not supported — payer-initiated reduction",
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("PI", "204"): "Service not covered under plan — payer-initiated reduction",
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("PI", "B7"): "Provider not certified — payer-initiated reduction",
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("PI", "B11"): "Service not covered — payer-initiated reduction",
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("PI", "B22"): "Covered by another payer — payer-initiated reduction",
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("PI", "B23"): "Non-covered procedure — payer-initiated reduction",
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# -- Correction and Reversal (CR) ------------------------------------
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("CR", "1"): "Deductible amount — correction/reversal",
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("CR", "2"): "Coinsurance amount — correction/reversal",
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("CR", "3"): "Co-payment amount — correction/reversal",
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("CR", "4"): "Procedure code inconsistency — correction/reversal",
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("CR", "16"): "Missing information — correction/reversal",
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("CR", "29"): "Time limit expired — correction/reversal",
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("CR", "45"): "Charge exceeds fee schedule — correction/reversal",
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("CR", "50"): "Non-covered service — correction/reversal",
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("CR", "97"): "Bundled service — correction/reversal",
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("CR", "109"): "Not covered by this payer — correction/reversal",
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("CR", "119"): "Benefit maximum — correction/reversal",
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("CR", "150"): "Level of service not supported — correction/reversal",
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("CR", "151"): "Frequency not supported — correction/reversal",
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("CR", "204"): "Service not covered — correction/reversal",
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("CR", "B7"): "Provider not certified — correction/reversal",
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("CR", "B11"): "Service not covered — correction/reversal",
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("CR", "B22"): "Covered by another payer — correction/reversal",
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("CR", "B23"): "Non-covered procedure — correction/reversal",
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}
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# --------------------------------------------------------------------------- #
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# Public API
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# --------------------------------------------------------------------------- #
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def reason_label(group_code: str, reason_code: str) -> str:
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"""Return the human-readable label for a ``(group, reason)`` pair.
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Falls back to ``f"Unknown ({group_code}-{reason_code})"`` when the
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code is not in the bundled dict. The fallback is a stable, parseable
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string so callers can distinguish "we don't know" from "known empty"
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(there are no known-empty labels in the dict).
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"""
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return _CARC_LABELS.get(
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(group_code, reason_code),
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f"Unknown ({group_code}-{reason_code})",
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)
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def all_known_codes() -> list[tuple[str, str, str]]:
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"""Return every known code as a sorted ``[(group, reason, label), ...]``.
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The result is sorted lexicographically by ``(group, reason)`` so UIs
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can render the full table without further work. Pairs are unique by
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construction (the dict cannot have duplicate keys).
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"""
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return sorted((g, r, lbl) for (g, r), lbl in _CARC_LABELS.items())
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__all__ = [
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"LAST_UPDATED",
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"reason_label",
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"all_known_codes",
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]
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@@ -335,14 +335,23 @@ def to_ui_remittance(
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f"CLP02 code {code} not in payer allowlist"
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)
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# Aggregate adjustmentAmount across ALL service-line CAS rows, not just
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# the first line. Mirrors the SUM the reconcile aggregator (T10)
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# computes against persisted CasAdjustment rows; this inline version
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# is the write-path equivalent (used when streaming 835 NDJSON
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# responses before persistence finishes).
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adjustment_total = Decimal("0")
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for sp in cp.service_payments:
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for adj in sp.adjustments:
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adjustment_total += adj.amount
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parsed_iso = parsed_at.isoformat().replace("+00:00", "Z")
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return {
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"id": cp.payer_claim_control_number,
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"claimId": cp.original_claim_id or "",
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"payerName": payer_name,
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"paidAmount": float(cp.total_paid or 0.0),
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# TODO: aggregate from CAS segments when reconciliation lands (sub-project 2)
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"adjustmentAmount": 0.0,
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"adjustmentAmount": float(adjustment_total),
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"status": status,
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"denialReason": denial_reason,
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"validationWarnings": validation_warnings,
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@@ -443,6 +452,53 @@ def to_ui_remittance_from_orm(
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}
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def to_ui_remittance_with_adjustments(
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row: Remittance,
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*,
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batch_id: str,
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parsed_at: datetime,
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cas_rows: list["db.CasAdjustment"] | None = None,
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) -> dict:
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"""Same shape as :func:`to_ui_remittance_from_orm` plus an ``adjustments`` array.
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Each persisted ``CasAdjustment`` row is rendered as
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``{"group", "reason", "label", "amount", "quantity"}``. The ``label``
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is resolved through :func:`cyclone.parsers.cas_codes.reason_label`
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so the UI does not have to ship its own CARC dictionary.
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``cas_rows`` is optional so callers that don't have the rows handy
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can still get the base dict; in that case ``adjustments`` is ``[]``.
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Pass ``cas_rows`` to avoid an extra round-trip; the endpoint at
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``GET /api/remittances/{id}`` passes them in to keep this mapper a
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pure function.
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"""
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base = to_ui_remittance_from_orm(
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row, batch_id=batch_id, parsed_at=parsed_at,
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)
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if not cas_rows:
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base["adjustments"] = []
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return base
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# Lazy import to avoid the circular store ↔ parsers import that
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# happens on cold start; mirrors the same pattern used elsewhere
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# in this module.
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from cyclone.parsers.cas_codes import reason_label
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base["adjustments"] = [
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{
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"group": c.group_code,
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"reason": c.reason_code,
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"label": reason_label(c.group_code, c.reason_code),
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"amount": float(c.amount or 0),
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"quantity": (
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float(c.quantity) if c.quantity is not None else None
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),
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}
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for c in cas_rows
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]
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return base
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def to_ui_provider(
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*,
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npi: str,
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@@ -766,6 +822,35 @@ class CycloneStore:
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)
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return [self._row_to_record(r) for r in rows]
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def get_remittance(self, remittance_id: str) -> dict | None:
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"""Return a UI-shaped remittance dict with ``adjustments`` array.
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Joins the persisted ``CasAdjustment`` rows for ``remittance_id``
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and labels each via :mod:`cyclone.parsers.cas_codes`. Returns
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``None`` when the remittance is not found so the API layer can
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map that to a 404.
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"""
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with db.SessionLocal()() as s:
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row = s.get(Remittance, remittance_id)
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if row is None:
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return None
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cas_rows = (
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s.query(CasAdjustment)
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.filter(CasAdjustment.remittance_id == remittance_id)
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.all()
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)
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parsed_at = (
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row.batch.parsed_at if row.batch is not None else row.received_at
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)
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if parsed_at is not None and parsed_at.tzinfo is None:
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parsed_at = parsed_at.replace(tzinfo=timezone.utc)
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return to_ui_remittance_with_adjustments(
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row,
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batch_id=row.batch_id,
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parsed_at=parsed_at,
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cas_rows=cas_rows,
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)
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def all(self) -> list[BatchRecord]:
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"""Return every ``BatchRecord``, oldest first (no pagination)."""
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with db.SessionLocal()() as s:
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@@ -637,3 +637,172 @@ def test_post_unmatch_removes_match(client: TestClient):
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assert body["claim"]["matchedRemittanceId"] is None
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# No Match rows existed before the call → 0 deleted.
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assert body["deletedMatches"] == 0
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# --------------------------------------------------------------------------- #
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# /api/remittances/{remittance_id} (T7 / SP3 P2)
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# --------------------------------------------------------------------------- #
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def test_get_remittance_404_when_missing(client: TestClient) -> None:
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"""A missing remittance returns 404 (not 500)."""
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resp = client.get("/api/remittances/does-not-exist")
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assert resp.status_code == 404
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def _seed_835_remittance(
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*,
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pcns: list[str],
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cas_rows: dict[str, list[tuple[str, str, str, str]]] | None = None,
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status_code: str = "1",
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total_charge: str = "100",
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total_paid: str = "100",
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) -> None:
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"""Helper: insert one 835 batch with one ClaimPayment per PCN.
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``cas_rows`` maps ``pcn -> [(group, reason, amount, qty_or_None), ...]``
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so a single CAS row maps cleanly to ``CasAdjustment``.
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"""
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from datetime import date, datetime, timezone
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from decimal import Decimal
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from cyclone.parsers.models_835 import (
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BatchSummary as BatchSummary835,
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ClaimAdjustment as ClaimAdjustment835,
|
||||
ClaimPayment,
|
||||
Envelope as Envelope835,
|
||||
FinancialInfo,
|
||||
Payer835,
|
||||
ParseResult835,
|
||||
Payee835,
|
||||
ReassociationTrace,
|
||||
ServicePayment,
|
||||
)
|
||||
from cyclone.store import BatchRecord835
|
||||
|
||||
claims = []
|
||||
for pcn in pcns:
|
||||
adjustments: list[ClaimAdjustment835] = []
|
||||
rows = (cas_rows or {}).get(pcn, [])
|
||||
for group, reason, amount, qty in rows:
|
||||
adjustments.append(ClaimAdjustment835(
|
||||
group_code=group, reason_code=reason,
|
||||
amount=Decimal(amount),
|
||||
quantity=Decimal(qty) if qty else None,
|
||||
))
|
||||
sp = ServicePayment(
|
||||
line_number=1,
|
||||
procedure_qualifier="HC",
|
||||
procedure_code="T1019",
|
||||
modifiers=[],
|
||||
charge=Decimal(total_charge),
|
||||
payment=Decimal(total_paid),
|
||||
units=Decimal("1"),
|
||||
unit_type="UN",
|
||||
adjustments=adjustments,
|
||||
)
|
||||
claims.append(ClaimPayment(
|
||||
payer_claim_control_number=pcn,
|
||||
status_code=status_code,
|
||||
total_charge=Decimal(total_charge),
|
||||
total_paid=Decimal(total_paid),
|
||||
service_payments=[sp] if rows else [],
|
||||
))
|
||||
|
||||
global_store.add(BatchRecord835(
|
||||
id=f"b-835-{pcns[0]}", kind="835", input_filename="era.txt",
|
||||
parsed_at=datetime(2026, 6, 19, 12, 5, tzinfo=timezone.utc),
|
||||
result=ParseResult835(
|
||||
envelope=Envelope835(
|
||||
sender_id="S", receiver_id="R", control_number="0001",
|
||||
transaction_date=date(2026, 6, 19),
|
||||
),
|
||||
financial_info=FinancialInfo(
|
||||
handling_code="C", paid_amount=Decimal(total_paid),
|
||||
credit_debit_flag="C", payment_method=None,
|
||||
),
|
||||
trace=ReassociationTrace(
|
||||
trace_type_code="1", trace_number="0001",
|
||||
originating_company_id="S",
|
||||
),
|
||||
payer=Payer835(name="Colorado Medicaid", id="SKCO0"),
|
||||
payee=Payee835(name="TOC, Inc.", npi="1881068062"),
|
||||
claims=claims,
|
||||
summary=BatchSummary835(
|
||||
input_file="era.txt", control_number="0001",
|
||||
transaction_date=date(2026, 6, 19),
|
||||
total_claims=len(claims), passed=len(claims), failed=0,
|
||||
),
|
||||
),
|
||||
))
|
||||
|
||||
|
||||
def test_get_remittance_with_empty_adjustments(client: TestClient) -> None:
|
||||
"""A remittance with no CAS rows returns ``adjustments == []``."""
|
||||
_seed_835_remittance(pcns=["PCN-EMPTY"])
|
||||
resp = client.get("/api/remittances/PCN-EMPTY")
|
||||
assert resp.status_code == 200, resp.text
|
||||
body = resp.json()
|
||||
assert body["id"] == "PCN-EMPTY"
|
||||
assert body["adjustments"] == []
|
||||
|
||||
|
||||
def test_get_remittance_with_adjustments_returns_labeled(client: TestClient) -> None:
|
||||
"""A remittance with two CAS rows surfaces both with the correct labels.
|
||||
|
||||
Seeds CO-45 (the fee-schedule code) and PR-1 (deductible) so we
|
||||
exercise both a CO group code and a PR group code, plus both a
|
||||
quantified and non-quantified row.
|
||||
"""
|
||||
_seed_835_remittance(
|
||||
pcns=["PCN-LABELED"],
|
||||
cas_rows={
|
||||
"PCN-LABELED": [
|
||||
("CO", "45", "50.00", ""), # no quantity
|
||||
("PR", "1", "10.00", "1"), # quantified
|
||||
],
|
||||
},
|
||||
)
|
||||
resp = client.get("/api/remittances/PCN-LABELED")
|
||||
assert resp.status_code == 200, resp.text
|
||||
body = resp.json()
|
||||
assert body["id"] == "PCN-LABELED"
|
||||
adjs = body["adjustments"]
|
||||
assert len(adjs) == 2
|
||||
|
||||
by_key = {(a["group"], a["reason"]): a for a in adjs}
|
||||
assert ("CO", "45") in by_key
|
||||
assert ("PR", "1") in by_key
|
||||
|
||||
co45 = by_key[("CO", "45")]
|
||||
assert co45["amount"] == 50.00
|
||||
assert co45["quantity"] is None
|
||||
# Label is non-empty and isn't the "Unknown" fallback (both are in the dict).
|
||||
assert co45["label"] and "Unknown" not in co45["label"]
|
||||
|
||||
pr1 = by_key[("PR", "1")]
|
||||
assert pr1["amount"] == 10.00
|
||||
assert pr1["quantity"] == 1
|
||||
assert pr1["label"] and "Unknown" not in pr1["label"]
|
||||
|
||||
# The CO and PR rows must have distinct labels (different codes → different meanings).
|
||||
assert co45["label"] != pr1["label"]
|
||||
|
||||
|
||||
def test_get_remittance_basic_fields_preserved(client: TestClient) -> None:
|
||||
"""claimId, payerName, paidAmount, status all surface unchanged."""
|
||||
_seed_835_remittance(
|
||||
pcns=["PCN-FIELDS"],
|
||||
cas_rows={"PCN-FIELDS": [("CO", "45", "12.34", "")]},
|
||||
total_paid="75.50",
|
||||
)
|
||||
resp = client.get("/api/remittances/PCN-FIELDS")
|
||||
assert resp.status_code == 200, resp.text
|
||||
body = resp.json()
|
||||
assert body["id"] == "PCN-FIELDS"
|
||||
assert body["payerName"] == "Colorado Medicaid"
|
||||
assert body["paidAmount"] == 75.50
|
||||
assert body["status"] == "received"
|
||||
assert body["batchId"] # populated; not pinned to a specific value
|
||||
assert body["receivedDate"] # populated
|
||||
assert body["parsedAt"] # populated
|
||||
|
||||
@@ -0,0 +1,139 @@
|
||||
"""Tests for :mod:`cyclone.parsers.cas_codes`.
|
||||
|
||||
Covers the public API surface:
|
||||
|
||||
- ``LAST_UPDATED`` module constant (parses as YYYY-MM-DD).
|
||||
- :func:`reason_label` — known codes return their label, unknown codes
|
||||
fall back to ``"Unknown ({group}-{reason})"``.
|
||||
- :func:`all_known_codes` — at least 100 entries, sorted, no duplicate
|
||||
``(group, reason)`` pairs.
|
||||
|
||||
The dict is a snapshot of CARC (Claim Adjustment Reason Codes); tests
|
||||
are deliberately decoupled from the exact labels (they change as
|
||||
payers revise codes) but pin down the API contract.
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
from datetime import date
|
||||
|
||||
import pytest
|
||||
|
||||
from cyclone.parsers import cas_codes
|
||||
|
||||
|
||||
# --------------------------------------------------------------------------- #
|
||||
# LAST_UPDATED
|
||||
# --------------------------------------------------------------------------- #
|
||||
|
||||
|
||||
def test_last_updated_constant() -> None:
|
||||
"""``LAST_UPDATED`` is a string that parses as YYYY-MM-DD."""
|
||||
assert isinstance(cas_codes.LAST_UPDATED, str)
|
||||
parsed = date.fromisoformat(cas_codes.LAST_UPDATED)
|
||||
assert parsed.isoformat() == cas_codes.LAST_UPDATED
|
||||
|
||||
|
||||
# --------------------------------------------------------------------------- #
|
||||
# reason_label — known codes
|
||||
# --------------------------------------------------------------------------- #
|
||||
|
||||
|
||||
def test_reason_label_known_co_45() -> None:
|
||||
"""CO-45 ("Charge exceeds fee schedule…") is the most-common CARC."""
|
||||
label = cas_codes.reason_label("CO", "45")
|
||||
assert isinstance(label, str)
|
||||
assert label.strip() # non-empty
|
||||
# We don't pin the exact text (carriers revise wording); the contract
|
||||
# is "non-empty and not the unknown-fallback".
|
||||
assert "Unknown" not in label
|
||||
|
||||
|
||||
def test_reason_label_known_pr_1() -> None:
|
||||
"""PR-1 ("Deductible amount") is the bread-and-butter PR code."""
|
||||
label = cas_codes.reason_label("PR", "1")
|
||||
assert isinstance(label, str)
|
||||
assert label.strip()
|
||||
assert "Unknown" not in label
|
||||
|
||||
|
||||
def test_reason_label_returns_specific_label_for_co_97() -> None:
|
||||
"""CO-97 is the bundled-payment / included-in-payment code; pins
|
||||
that distinct codes map to distinct labels (not all the same
|
||||
fallback string)."""
|
||||
co45 = cas_codes.reason_label("CO", "45")
|
||||
co97 = cas_codes.reason_label("CO", "97")
|
||||
# Both are non-fallback but should not be identical text.
|
||||
assert co45 != co97
|
||||
|
||||
|
||||
# --------------------------------------------------------------------------- #
|
||||
# reason_label — unknown fallback
|
||||
# --------------------------------------------------------------------------- #
|
||||
|
||||
|
||||
def test_reason_label_unknown_returns_fallback() -> None:
|
||||
"""Unknown (group, reason) pairs return ``"Unknown ({group}-{reason})"``."""
|
||||
assert cas_codes.reason_label("XX", "999") == "Unknown (XX-999)"
|
||||
# Even a known group with an unknown reason falls back.
|
||||
assert cas_codes.reason_label("CO", "9999") == "Unknown (CO-9999)"
|
||||
|
||||
|
||||
# --------------------------------------------------------------------------- #
|
||||
# all_known_codes — shape + invariants
|
||||
# --------------------------------------------------------------------------- #
|
||||
|
||||
|
||||
def test_all_known_codes_count_ge_100() -> None:
|
||||
"""We need a useful snapshot — at least 100 codes."""
|
||||
entries = cas_codes.all_known_codes()
|
||||
assert len(entries) >= 100
|
||||
|
||||
|
||||
def test_all_known_codes_sorted_unique() -> None:
|
||||
"""Each entry is ``(group, reason, label)``; pairs are unique; result sorted."""
|
||||
entries = cas_codes.all_known_codes()
|
||||
# Shape: every entry is a 3-tuple of strings.
|
||||
for entry in entries:
|
||||
assert len(entry) == 3
|
||||
group, reason, label = entry
|
||||
assert isinstance(group, str) and group
|
||||
assert isinstance(reason, str) and reason
|
||||
assert isinstance(label, str) and label
|
||||
|
||||
# Unique (group, reason) pairs.
|
||||
pairs = [(g, r) for g, r, _ in entries]
|
||||
assert len(pairs) == len(set(pairs))
|
||||
|
||||
# Sorted by (group, reason) lexicographically.
|
||||
assert entries == sorted(entries)
|
||||
|
||||
|
||||
def test_all_known_codes_includes_required_minimum_set() -> None:
|
||||
"""Pin the spec's required codes so a future dict swap that drops them
|
||||
is caught here, not in production."""
|
||||
entries = cas_codes.all_known_codes()
|
||||
keys = {(g, r) for g, r, _ in entries}
|
||||
required = {
|
||||
("CO", "45"), ("CO", "97"), ("CO", "16"), ("CO", "29"),
|
||||
("CO", "50"), ("CO", "109"), ("CO", "119"), ("CO", "197"),
|
||||
("CO", "204"), ("CO", "B7"), ("CO", "251"),
|
||||
("PR", "1"), ("PR", "2"), ("PR", "3"), ("PR", "204"),
|
||||
("OA", "23"), ("OA", "97"),
|
||||
("PI", "16"), ("PI", "21"), ("PI", "22"), ("PI", "25"),
|
||||
("CR", "1"), ("CR", "2"), ("CR", "3"), ("CR", "4"),
|
||||
}
|
||||
missing = required - keys
|
||||
assert not missing, f"missing required CARC codes: {sorted(missing)}"
|
||||
|
||||
|
||||
# --------------------------------------------------------------------------- #
|
||||
# reason_label — spot-check that every dict entry round-trips correctly
|
||||
# --------------------------------------------------------------------------- #
|
||||
|
||||
|
||||
@pytest.mark.parametrize("entry", list(cas_codes._CARC_LABELS.items()))
|
||||
def test_reason_label_matches_dict_for_every_entry(entry) -> None:
|
||||
"""Every entry in the dict returns its own label via ``reason_label``."""
|
||||
(group, reason), expected = entry
|
||||
assert cas_codes.reason_label(group, reason) == expected
|
||||
Reference in New Issue
Block a user