Which code set is used to identify medical diagnoses?

• A. CPT
• B. ICD-9
• C. DSM-5
• D. HCPCS

Answer: (B)

Diagnoses are identified using a standardized coding system that labels each condition with a specific code, allowing consistent documentation, billing, and data analysis. This coding set is the ICD family, which assigns diagnosis codes to diseases and health problems.

Among the options, the ICD code set is the one used to identify medical diagnoses, making it the best fit. Other codes serve different purposes: CPT codes describe procedures and services performed, DSM-5 provides diagnostic criteria for mental disorders rather than billing codes, and HCPCS covers procedures, supplies, and some products for billing rather than the diagnosis itself.