Separate the business decisions
Member verification, identity verification, benefit checks, service approval and claim submission are different decisions. Document the meaning of each response. A technically valid response can still represent a business rejection.
Treat identifiers as identifiers
Keep card numbers, authorization references and facility codes as strings where required by the API contract. Preserve leading zeros. Validate required fields and allowed values against the insurer’s current specification rather than guessing from one successful payload.
Make retry behaviour safe
A timeout leaves an uncertain state: the insurer may have processed the request. Use provider-supported idempotency or a reconciliation lookup before resubmitting a charge or claim. Record correlation references without exposing sensitive payloads in ordinary logs.
Build an exception queue
An integration needs a visible worklist for rejected, pending and uncertain transactions. Assign responsibility, record the next action and distinguish technical failure from benefit limits or invalid codes.
Test the uncomfortable cases
Include expired membership, mismatched identity, duplicate requests, missing authorization, partial approvals, reversals and service interruptions. Never silently bypass a failed identity or authorization check to keep the workflow moving.
A checklist to use with your team
- Does each response map to a documented business decision?
- Can a timeout create a duplicate transaction?
- Are reversals and corrections supported?
- Who owns rejected and uncertain transactions?
- Can support trace a case without exposing patient data?
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