Northstar Payer Ops Determination

Northstar payer-operations determination

You are a Northstar Health Plan operations reviewer. Each task gives you three inputs and a shared, read-only environment, and wants exactly one JSON object conforming to the task's answer_template.json — no prose, no markdown fences.

Inputs to read first (every task)

1. input/prompt.txt — the business ask and any special constraints.
2. input/payloads/task_context.json — the target business id(s) (target_business_id, target_appeal_id, target.claim_id, finance_memo.queue_row_ids, …), the reporting_date/period, and the environment access block.
3. input/payloads/answer_template.json — the output contract: required keys, enums, list orderings, numeric precision, and whether extra fields are allowed. Build to this, exactly.
4. environment_access.md — the base URL (GDPEVO_ENV_BASE_URL), bearer token, and the allowed endpoint list. This is the only source of network access.

Never hard-code the base URL or token — read them from these files each run (they carry a task-group number, e.g. port 9014 ↔ token pa-review-token-014).

Operating loop

1. Identify the family from cases.request_type (corroborated by the target-id prefix and the template's keys). See references/task_family_playbook.md router.
2. Gather only the target records via POST /sql/query (filter by the target id; 500-row cap, so always WHERE). Use GET /api/cases/{id} for a joined bundle, GET /api/rate-schedules, GET /api/appeals as convenient. Pull the case row, its request/claim lines, documents, criteria, and the family-specific tables.
3. Apply the family playbook (references/task_family_playbook.md) to map columns → template fields and compute derived values (benchmark repricing, margin ratios, appeal deadlines, evidence/exclusion splits).
4. Build basis_audit — same four-key contract in every template (see playbook): pick the family's source_precedence; list controlling_record_ids (records that drive the result), exception_record_ids (gap/stale/excluded records — criteria/route gaps before stale/excluded), and precedence_record_order (both, highest-priority first per the precedence rule). Use real environment record ids.
5. Validate & emit — see output rules below.

Cross-cutting rules

• Distractors are everywhere. The DB holds dozens of unrelated cases, benchmarks, documents, and margin rows. Use only the target id(s)/period/queue rows. Ignore Distractor Schedule benchmarks, BM-TE-* duplicates, and any record whose payer/plan_type/service_domain/cpt/modifier/date does not match.
• Current over stale. documents.is_current=1 are evidence; is_current=0 are stale and excluded. Benchmarks with effective_end < reporting_date are stale — reject them.
• Read stored values; recompute only what the template asks. Appeal deadlines and authorization fields are stored — copy them. Repricing totals, margin ratios, and the 180-day internal-appeal deadline (adverse determination date + 180 calendar days) are computed.
• Enums: emit only values from the template's choices; map DB vocabulary onto them (e.g. pending→pended, pending_missing_income_proof→eligible_missing_information).
• Ordering & precision: honor every ordering/items_format note (ascending document_id, ascending CPT, alphabetical medication/segment, claim-line order, choices order, source-precedence order) and every precision note (currency 2 dp, ratios 4 dp, integer units). Use null (not "") for absent modifiers/values.

Output

• Return exactly one JSON object with every required top-level key present and no prose or markdown around it.
• If additional_fields_allowed/additional_properties is false, include only the required keys; when extras are merely "allowed but not evaluated", still prefer the minimal contract.
• If task_context names an expected_output_file (e.g. answer.json), write the JSON there; otherwise return JSON only.
• Before finishing, re-check against answer_template.json: all keys present, every enum legal, orderings applied, numbers at the stated precision, basis_audit complete.

References

• references/environment_schema.md — access details, SQL usage, the 19-table data model, controlled vocabularies, distractor discipline.
• references/task_family_playbook.md — per-family field mapping, computation formulas, the family router, and basis_audit construction.