fhir-developer-skill

Installation
SKILL.md

FHIR Developer Skill

Quick Reference

HTTP Status Codes

Code When to Use
200 OK Successful read, update, or search
201 Created Successful create (include Location header)
204 No Content Successful delete
400 Bad Request Malformed JSON, wrong resourceType
401 Unauthorized Missing, expired, revoked, or malformed token (RFC 6750)
403 Forbidden Valid token but insufficient scopes
404 Not Found Resource doesn't exist
412 Precondition Failed If-Match ETag mismatch (NOT 400!)
422 Unprocessable Entity Missing required fields, invalid enum values, business rule violations

Required Fields by Resource (FHIR R4)

| Resource | Required Fields | Everything Else |

Related skills
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First Seen
Jan 23, 2026