Citation-locked medical-bill letter: No Surprises Act balance-bill dispute, health-plan internal appeal, hospital financial-assistance cover letter, Medicare redetermination, or GF

Citation-locked medical-bill letter: No Surprises Act balance-bill dispute, health-plan internal appeal, hospital financial-assistance cover letter, Medicare redetermination, or GFE dispute filing pack — deterministic eligibility + computed deadlines + a ready-to-send document. Honest-no: nothing sold on expired windows or unprotected scenarios.

price-ascending: candidates are ordered by the listed price of the operation, with no managed-first preference applied. Unlike /v1/apis, this surface does not rank Apiosk-settled listings above federated ones — a comparison that reorders on commercial grounds is not a comparison. Pass sort=managed_first for the catalog's ordering.

Compared: listed price, settlement rail and input compatibility. Not measured yet: latency, reliability, result quality, and provider terms such as rate limits, jurisdiction and licensing.