Update use-postman.md

Author: EXPEkesheth

articles/healthcare-apis/fhir/use-postman.md

@@ -60,6 +60,8 @@ Open Postman, select the **workspace**, **collection**, and **environment** you
 
 [ ![Screenshot of create a new request.](media/postman/postman-create-new-request.png) ](media/postman/postman-create-new-request.png#lightbox)
 
+To perform health check on FHIR service, enter `{{fhirurl}}/health/check` in the GET request, and select 'Send'. You should be able to see Status of FHIR service without need of bearer token. HTTP Status code response with 200 and OverallStatus as "Healthy" in response, means your health check is succesful.
+
 ## Get capability statement
 
 Enter `{{fhirurl}}/metadata` in the `GET`request, and select `Send`. You should see the capability statement of the FHIR service.