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This endpoint provides statistical information about a domain, including concept counts, vocabulary distribution, and concept class breakdown.

Path Parameters

domain_id
string
required
The domain identifier to get statistics for.
Example: Condition, Drug, Procedure

Query Parameters

vocab_release
string
Specific vocabulary release version to query
Example: 2025.1

Response

domain_id
string
Domain identifier.
statistics
object
Statistical overview of the domain.
meta
object
Response metadata.

Usage Examples

Get Condition Domain Statistics

Get Drug Domain Statistics

Get Procedure Domain Statistics

Notes

  • Statistics are calculated from the current vocabulary release
  • The vocabulary_breakdown shows which source vocabularies contribute concepts to the domain
  • The concept_class_breakdown shows the distribution of concept types within the domain
  • Standard concepts are preferred for clinical applications