A comprehensive reference for building FHIR R4 REST APIs that gets the details right. The core value is in the specifics: it clearly separates required from optional fields (spoiler: most things are optional), maps validation errors to the correct HTTP status codes (422 for bad enums, 412 for ETag mismatches, not just "400 for everything"), and provides ready-to-use code patterns in Python and TypeScript. Includes value sets for all the common enums, coding system URLs for LOINC/SNOMED/RxNorm, and calls out the gotchas that trip people up like Encounter.class using Coding directly instead of CodeableConcept. Best used when you're tired of cross-referencing the official FHIR spec and just need to know what fields are actually mandatory.
npx skills add https://github.com/anthropics/healthcare --skill fhir-developer-skill