Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Diagnosis codes
Introduction
In medicine, Diagnostic codes are used to group and identify diseases, disorders, symptoms, and medical signs, and are used to measure morbidity and mortality.
Commonly used diagnosis coding systems
Commonly used diagnosis coding systems
- ICD-9-CM (volumes 1 and 2 only. Volume 3 contains Procedure codes)
- ICD-10
- ICPC-2 (Also includes reasons for encounter (RFE), Procedure codes and process of care)
- NANDA
- Diagnostic and Statistical Manual of Mental Disorders or DSM-IV (psychiatric disorders only)
- Mendelian Inheritance in Man (genetic diseases only)
- SNOMED (D axis)