Info & list-resources

Two commands for exploring the FHIR resource landscape without leaving the terminal.

info — look up a resource type

bash

fhir-resource-diff info Observation --fhir-version R4

Observation (clinical)
FHIR version: R4
Measurements and assertions about a patient or subject

Documentation:
  R4:   https://hl7.org/fhir/R4/observation.html

Without --fhir-version, all versions are shown:

bash

fhir-resource-diff info Patient

Patient (base)
FHIR versions: R4, R4B, R5
Documentation:
  R4:  https://hl7.org/fhir/R4/patient.html
  R4B: https://hl7.org/fhir/R4B/patient.html
  R5:  https://hl7.org/fhir/R5/patient.html

The documentation links point directly to the HL7 specification page for that resource type and version.

Bundle example

bash

fhir-resource-diff info Bundle

Bundle (foundation)
FHIR versions: R4, R4B, R5
Documentation:
  R4:  https://hl7.org/fhir/R4/bundle.html
  R4B: https://hl7.org/fhir/R4B/bundle.html
  R5:  https://hl7.org/fhir/R5/bundle.html

JSON output

bash

fhir-resource-diff info Observation --fhir-version R4 --format json

json

{
  "resourceType": "Observation",
  "category": "clinical",
  "description": "Measurements and assertions about a patient or subject",
  "versions": ["R4"],
  "documentation": {
    "R4": "https://hl7.org/fhir/R4/observation.html"
  }
}

list-resources — explore the registry

bash

fhir-resource-diff list-resources --fhir-version R4

FHIR Resource Types — R4 (37 total)

foundation
  Bundle                  Container for a collection of resources
  ...

base
  Patient                 Demographics and administrative information about an individual
  Practitioner            A person with a formal responsibility in healthcare
  Organization            A formally recognized grouping of people or organizations
  ...

clinical
  Observation             Measurements and assertions about a patient or subject
  Condition               Detailed information about a clinical condition or diagnosis
  MedicationRequest       Order or request for a medication
  AllergyIntolerance      Allergy or intolerance and its clinical consequences
  ...

financial
  Claim                   Claim, pre-determination, or pre-authorization
  Coverage                Insurance or medical plan coverage
  ExplanationOfBenefit    Explanation of Benefit resource

Filter by category

bash

fhir-resource-diff list-resources --category clinical
fhir-resource-diff list-resources --category financial
fhir-resource-diff list-resources --category foundation

Available categories: foundation, base, clinical, financial, specialized, conformance.

Filter by FHIR version

bash

fhir-resource-diff list-resources --fhir-version R5

Lists only resource types present in R5. Useful for checking which types are available before validating version-specific resources.

JSON output

bash

fhir-resource-diff list-resources --fhir-version R5 --format json

Returns an array of resource type objects with name, category, description, and documentation fields — useful for tooling that needs to enumerate or validate against the registry.

Info & list-resources ​

info — look up a resource type ​

Bundle example ​

JSON output ​

list-resources — explore the registry ​

Filter by category ​

Filter by FHIR version ​

JSON output ​

See also ​

Info & list-resources

info — look up a resource type

Bundle example

JSON output

list-resources — explore the registry

Filter by category

Filter by FHIR version

JSON output

See also