| Code | Display | Definition |
| 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. |