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Retrieve the list of standard OHDSI domains. Domains categorize concepts by their clinical or administrative function (e.g., Condition, Drug, Procedure).

Query Parameters

vocab_release
string
Specific vocabulary release version to use. If not provided, uses the latest available release.
Format: YYYY.Q (e.g., 2025.1)

Response

success
boolean
Indicates if the request was successful.
data
object
meta
object

Available Domains

The endpoint returns all standard OHDSI domains:

Clinical Domains

  • Condition - Diseases, disorders, and clinical findings
  • Procedure - Medical procedures and interventions
  • Observation - Clinical observations and assessments
  • Measurement - Quantitative test results and vital signs
  • Drug - Medications and pharmaceutical products
  • Device - Medical devices and equipment
  • Specimen - Biological specimens and samples

Administrative Domains

  • Visit - Healthcare encounters and visit types
  • Provider - Healthcare provider roles and specialties
  • Location - Geographic locations
  • Care Site - Healthcare facilities
  • Payer - Insurance and payment-related concepts
  • Plan - Insurance plans
  • Sponsor - Study sponsors
  • Cost - Healthcare cost information
  • Revenue - Revenue codes

Other Domains

  • Episode - Clinical episodes
  • Regimen - Treatment regimens
  • Metadata - Vocabulary metadata
  • Type Concept - Type concepts
  • Relationship - Relationship types
  • Gender - Gender concepts
  • Race - Race concepts
  • Ethnicity - Ethnicity concepts