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VA Technical Reference Model v 24.4

Observational Health Data Sciences and Informatics (OHDSI) WebAPI
Observational Health Data Sciences and Informatics (OHDSI) WebAPI Technology

General InformationGeneral Information help

Technologies must be operated and maintained in accordance with Federal and Department security and privacy policies and guidelines. More information on the proper use of the TRM can be found on the TRM Proper Use Tab/Section.

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Description: Observational Health Data Sciences and Informatics (OHDSI) Web Application Programming Interface (API) is a Representation State Transfer (REST)ful service layer that provides access to data and method execution. OHDSI WebAPI provides a set of web services that are used by the OHDSI applications and provides a general purpose API for access to OHDSI standard information. Additionally, this technology provides access to the following RESTful services: Standardized Vocabularies, Common Data Model, LAERTES Evidence Knowledge Base, Cohort Definition/Analysis, Study Feasibility, and Therapy Path Reporting.

OHDSI WebAPI is compatible with Oracle Database, Microsoft Structured Query Language (SQL) Server, and PostgreSQL databases.
Technology/Standard Usage Requirements: Users must ensure their use of this technology/standard is consistent with VA policies and standards, including, but not limited to, VA Handbooks 6102 and 6500; VA Directives 6004, 6513, and 6517; and National Institute of Standards and Technology (NIST) standards, including Federal Information Processing Standards (FIPS). Users must ensure sensitive data is properly protected in compliance with all VA regulations. Prior to use of this technology, users should check with their supervisor, Information Security Officer (ISO), Facility Chief Information Officer (CIO), or local Office of Information and Technology (OI&T) representative to ensure that all actions are consistent with current VA policies and procedures prior to implementation.
Section 508 Information: This technology has not been assessed by the Section 508 Office. The Implementer of this technology has the responsibility to ensure the version deployed is 508-compliant. Section 508 compliance may be reviewed by the Section 508 Office and appropriate remedial action required if necessary. For additional information or assistance regarding Section 508, please contact the Section 508 Office at
Decision: View Decisions

Decision Source: TRM Mgmt Group
Decision Process: One-VA TRM v22.8
Decision Date: 08/05/2022 at 13:40:30 UTC
Introduced By: TRM Request
Vendor Name: Observational Health Data Sciences & Informatics (OHDSI)
- The information contained on this page is accurate as of the Decision Date (08/05/2022 at 13:40:30 UTC).