LOINC codes for valid attachment requests and responses can be located using these resources:

  • SearchLOINC
  • LOINC table files
  • LOINC Terminology Service using HL7 FHIR

5.1.1 Codes for attachment requestors

You can find valid LOINCs for attachment requestors (i.e. payers) via the following means using the indicated source.

  • Using SearchLOINC, use the following syntax ValidHL7AttachmentRequest:Y.
  • In the LOINC table CSV file, filter the ValidHL7AttachmentRequest column for value Y.
  • Using the LOINC Terminology Service, use the request https://fhir.loinc.org/ValueSet/$expand?url=http://loinc.org/vs/valid-hl7-attachment-requests.

5.1.2 Codes for attachment responders

You can find valid LOINCs for attachment responders (i.e. providers) via the following means using the indicated source.

5.1.2.1 Using SearchLOINC

5.1.2.2 Using the LOINC table CSV file

  • Filter the HL7_ATTACHMENT_STRUCTURE column for any (non-null) value to locate LOINC codes that are valid attachment responses.
  • Filter the HL7_ATTACHMENT_STRUCTURE column for value IG exists to identify the subset of response terms that have associated U.S. Realm C-CDA implementation guides.
  • Filter the HL7_ATTACHMENT_STRUCTURE column for value No IG exists to identify the subset of response terms that do NOT have associated C-CDA implementation guides.

5.1.2.3 Using the LOINC Terminology Service

  • Use the request https://fhir.loinc.org/ValueSet/$expand?url=http://loinc.org/vs/valid-hl7-attachment-responses to retrieve the codes that are valid attachment responses.
  • Use the request https://fhir.loinc.org/ValueSet/$expand?url=http://loinc.org/vs/valid-hl7-attachment-responses-ig-exists to return the subset of response terms that have associated U.S. Realm C-CDA implementation guides.
  • Use the request https://fhir.loinc.org/ValueSet/$expand?url=http://loinc.org/vs/valid-hl7-attachment-responses-no-ig-exists to return the subset of response terms that do NOT have associated C-CDA implementation guides.