Submit MIPS quality measure data via the QPP Submissions API for the 2026 performance period

Verified steps

1. Register your application in the QPP developer portal and obtain OAuth 2.0 client credentials; use the authorization code flow with PKCE to acquire an access token for the clinician or group you are submitting on behalf of.
2. Review the 2026 QPP quality measure specifications at qpp.cms.gov to confirm which measures are applicable, the required sample size thresholds, and any measure-specific reporting constraints added for 2026.
3. Construct a JSON submission payload according to the QPP Submissions API schema, including the NPI or TIN identifier, performance year (2026), measurement set (quality), and an array of measure observations each containing the measure ID, performance met, denominator, numerator, and exclusion counts.
4. POST the submission payload to the QPP Submissions API staging environment at the preview endpoint to validate scores and data before targeting the production environment.
5. On receipt of a 201 Created response containing the submission ID, confirm the calculated preliminary score returned in the response body; resolve any validation errors surfaced in the 422 response body if submission is rejected.
6. Submit final data before the annual QPP submission deadline (typically in late March of the year following the performance year) and retain the submission ID and score confirmation for audit purposes.