HL7 Terminology (THO)
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HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 6.5.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

CodeSystem: Diagnosis Type Codes

Official URL: http://terminology.hl7.org/CodeSystem/diagnosistype Version: 1.0.0
Active as of 2025-09-18 Maturity Level: 1 Responsible: Health Level Seven International Computable Name: DiagnosisTypeCodes
Other Identifiers: OID:2.16.840.1.113883.5.174

Copyright/Legal: This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license

This value set includes Diagnosis Type codes.

This Code system is referenced in the content logical definition of the following value sets:

Last updated: 2025-05-25 00:00:00+0000

Profile: Shareable CodeSystem

This case-sensitive code system http://terminology.hl7.org/CodeSystem/diagnosistype defines the following codes:

CodeDisplayDefinition
admitting Admitting Diagnosis The diagnosis given as the reason why the patient was admitted to the hospital.
clinical Clinical Diagnosis A diagnosis made on the basis of medical signs and patient-reported symptoms, rather than diagnostic tests.
differential Differential Diagnosis One of a set of the possible diagnoses that could be connected to the signs, symptoms, and lab findings.
discharge Discharge Diagnosis The diagnosis given when the patient is discharged from the hospital.
laboratory Laboratory Diagnosis A diagnosis based significantly on laboratory reports or test results, rather than the physical examination of the patient.
nursing Nursing Diagnosis A diagnosis which identifies people's responses to situations in their lives, such as a readiness to change or a willingness to accept assistance.
prenatal Prenatal Diagnosis A diagnosis determined prior to birth.
principal Principal Diagnosis The single medical diagnosis that is most relevant to the patient's chief complaint or need for treatment.
radiology Radiology Diagnosis A diagnosis based primarily on the results from medical imaging studies.
remote Remote Diagnosis A diagnosis determined using telemedicine techniques.
retrospective Retrospective Diagnosis The labeling of an illness in a specific historical event using modern knowledge, methods and disease classifications.
secondary Secondary Diagnosis A condition or complaint either coexisting with the principal diagnosis or arising during a service event or episode.
externalcauseofinjury External Cause of Injury A condition or diagnosis caused by a factor outside the body that directly results in a physical injury, poisoning, or other adverse health condition.
patientreported Patient Reported Diagnosis A condition or diagnosis reported by the patient.
patientreasonforvisit Patient Reason For Visit Identifies the patient's reason for a visit.

History

DateActionAuthorCustodianComment
2025-07-05createCorey SpearsFMCreate CodeSystem and ValueSet to replace Ex-DiagnosisType; up-688