UnitedHealth Group · Rate Limits

Unitedhealth Rate Limits

UnitedHealth Group does not publish public, numeric API rate limits. Throughput on the CMS Patient Access FHIR endpoints is governed by app-registration and member-consent flows; commercial Optum / UHC integrations have throughput defined per partner agreement.

Unitedhealth Rate Limits is the machine-readable rate-limit profile for UnitedHealth Group on the APIs.io network, in the API Commons Rate Limits shape.

It captures 2 rate-limit definitions, measuring varies.

An exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Healthcare, FHIR, Rate Limiting, and B2B.

2 Limits Exhausted: HTTP 429
Method: generated, dated 2026-05-05.
Written by API Evangelist on 2026-05-05 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
HealthcareFHIRRate LimitingB2B

Limits

Patient Access FHIR app
varies
see UHC / Optum developer portal app onboarding
CMS Patient Access endpoints; throughput tied to registered app and member consent.
Commercial integration contract
varies
see Optum / UHC commercial agreement

Policies

App Registration
Patient Access FHIR clients must register through the UHC / Optum developer portal and meet CMS Patient Access conformance requirements.
Commercial Onboarding
Commercial throughput, concurrency, and SLAs are negotiated as part of Optum / UHC integration contracts, not published publicly.

Sources

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  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
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