# ReasonHealth

ReasonHealth is a healthcare interoperability platform that turns clinical knowledge into governed, computable, production-ready systems. It provides the clinical domain layer that coding agents cannot replicate: deterministic terminology, FHIR validation, artifact lifecycle, and clinical provenance.

## Products

### ReasonHealth Hub

The clinical knowledge platform. Search, validate, and expand SNOMED CT, LOINC, ICD-10-CM, RxNorm, and UCUM. Manage the full artifact lifecycle from draft to published. Accessible as a hosted MCP server, REST API, and set of agent skills.

- **Terminology** — Search, validate, and expand clinical codes and relationships
- **Artifacts** — Artifact lifecycle management: draft → validate → review → publish
- **Model / BYOK** — Bring-your-own-key routing, spend caps, audit logs

### ReasonHealth Skills

The AI interface layer connecting any AI harness (Cursor, Copilot, Claude Code) to ReasonHealth Hub and clinical knowledge infrastructure. Three tracks:

- **Terminology** — Clinical terminology search, crossmapping, ValueSet and ConceptMap authoring
- **Clinical Informatics** — Guidelines → computable FHIR/CQL artifacts; discovery → ingest → extract → formalize
- **Dev Lifecycle** — FHIR API design, modeling, compliance review, human factors, refactoring, docs

### rh (Rust Health)

An independent open-source FHIR toolkit. High-performance CLI and composable library crates for FHIRPath evaluation, FSH compilation, CQL evaluation, validation, packaging, and code generation. Designed for CI/CD, automation, and embedding.

## How it works

The platform operates on a Propose → Verify → Review pattern. An AI model generates a draft. Deterministic services check it against clinical standards. A frontier model or human reviews only when risk warrants it. The model is interchangeable — clinical knowledge lives in verified tools, not in the model.

## Design principles

- **Operational clarity first** — hierarchy makes complex workflows scannable
- **Evidence over embellishment** — visual style reinforces trust and determinism
- **Consistent system language** — typography, spacing, and component patterns match shared conventions
- **Progressive depth** — start with clear outcomes, then reveal technical detail
- **Accessible by default** — legibility, contrast, focus states, reduced-motion-safe interactions

## Built by Vermonster

ReasonHealth is built and maintained by Vermonster, a healthcare technology consultancy specializing in intelligence operations for healthcare teams.

## Links

- Website: https://reason.health
- Hub: https://reasonhub.app
- GitHub: https://github.com/reason-healthcare