ICD-9-CM Diagnosis Code 079.51
Diagnosis Code: 079.51 (Raw: 07951)
Description: Human T-cell lymphotrophic virus, type I [HTLV-I]
Classification: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)
Fiscal Year: 2026 Reference
CMS Section 111 Status: Valid for reporting.
Overview & Historical Usage
ICD-9-CM code 079.51 is designated for Human T-cell lymphotrophic virus, type I [HTLV-I]. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical clinical data analysis.