0.1.0 Feb 07, 2026

• Breaking change: integer64 from Int to String in Gleam, as integer64 is sent as string in JSON, and is relatively uncommon, R5 only
• Add search_any in clients, which takes a flexible but not necessarily correct String rather than typed search parameters
• Add operation_any in clients, which similarly lets user choose operation name and parameters

0.0.0 Feb 01, 2026

• Gleam types for FHIR data types and resources
• JSON encoder and to_json functions
• Enums for valuesets with required binding
• Sans-io request/response for Create, Read, Update, Delete, Search
• Search parameter types for each resource, but basic params only
• Client layers over sans-io for httpc and rsvp
• Supports R4, R4B, R5
• Parses many valid FHIR JSON examples, but does not guarantee json -> encode -> to_json roundtrip will output same json as original, in particular there is a loss of implicit precision in decimal types, contrary to FHIR spec. At some point the decimal type will change, which will be a breaking change
• Uses String for Date and DateTime, which will at some point change to a real time type in a breaking change
• No primitive extensions support, so primitive elements will change in some undecided way
• This is an initial release with various problems, so there could be breaking changes in any module

(once on 1.0.0) Version number MAJOR.MINOR.PATCH means:

MAJOR - incompatible API changes

MINOR - backward-compatible functionality added

PATCH - backward-compatible bug fixes

Gleam fhir is a work in progress, tracking todo items at https://github.com/PotatoEMR/gleam-fhir/issues, if anything is incorrect, missing, or hard to use, please add an issue.