---
title: "PATCH /cohort_definition"
method: PATCH
path: "/cohort_definition"
tags: ["cohort_definitionController"]
---

# PATCH /cohort_definition

`PATCH /cohort_definition`

## Request body

- CohortDefinitionPartial — (tsType: Partial<cohort_definition>, schemaOptions: { partial: true })
  - `cohort_definition_id` number
  - `cohort_definition_name` string
  - `cohort_definition_description` string
  - `definition_type_concept_id` number
  - `cohort_definition_syntax` string
  - `subject_concept_id` number
  - `cohort_initiation_date` string, date-time

## Response `200`

Count of cohort_definition models updated

- LoopbackCount
  - `count` number

---

[API](https://skmtc.net/ohdsi/apis/data-connection.md) · [All operations](https://skmtc.net/ohdsi/apis/data-connection/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ohdsi/data-connection/versions/b5ead99a1d44/schema)