API end point: https://fhir.careevolution.com/Master.Adapter1.WebClient/api/fhir-r4-strict.
https://fhir.careevolution.com/Master.Adapter1.WebClient/api/fhir-r4-strict
http://careevolution.com/fhirextensions#claim-billClass
Billing class for claim
Used in Claim resources
Type CodeableConcept