B97.30 Unspecified retrovirus as the cause of diseases classified elsewhere

ICD-10-CM B97.30: Unspecified retrovirus as the cause of diseases classified elsewhere

ICD-10-CM code B97.30 identifies an unspecified retrovirus as the cause of diseases classified elsewhere. This code belongs to category B97, which covers viral agents as causes of conditions indexed in different sections. The code is designated as non-primary, and its category excludes human immunodeficiency virus disease. The supplied sources establish the code's hierarchy and classification but lack specific clinical or coverage details. 3 5

Plain-language overview

Code B97.30 is titled Unspecified retrovirus as the cause of diseases classified elsewhere, providing a specific classification designation for this infectious agent within the ICD-10-CM system. 3

What this code represents

Code B97.30 falls under category B97.3, Retrovirus as the cause of diseases classified elsewhere, which is part of the broader B97 range for viral agents as the cause of diseases classified elsewhere. 3 5

The B97.3 category carries an Excludes1 note for Human immunodeficiency virus [HIV] disease (B20), distinguishing it from conditions classified under that separate code. 5

Coding details

Code B97.30 is designated with a nonPrimary status, and it is listed alongside more specific codes in the same category, such as B97.39 for other retrovirus as the cause of diseases classified elsewhere. 5 3

Documentation considerations

The ICD-10-CM tabular list distinguishes B97.30 from B97.39, indicating that the classification system provides separate codes for unspecified versus other specified retroviruses as the cause of diseases classified elsewhere. 3

What the sources add

The CDC tabular list and the imedicalcode.com reference both establish the code title and its placement within the B97.3 category, while the imedicalcode.com source additionally provides the nonPrimary designation and the Excludes1 note for HIV disease. 3 5

A CDC protocol document lists B97.3 under immunosuppressive disorders, specifically as Retrovirus as the cause of diseases classified elsewhere, adding operational context to the category's clinical grouping. 2

Coverage and utilization context

A phecode mapping reference includes the exact title Unspecified retrovirus as the cause of diseases classified elsewhere alongside other retrovirus, providing a distinct data mapping context for this diagnosis concept. 4

Sources

1. Communicable Diseases — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
2. US Influenza Vaccine Effectiveness Network Protocol for ... — stacks.cdc.gov; accessed 2026-07-25.
3. ICD-10-CM TABULAR LIST of DISEASES and INJURIES — ftp.cdc.gov; accessed 2026-07-25.
4. Phecode 079 · Cancer PRSweb — csg.sph.umich.edu; accessed 2026-07-25.
5. Coding: ICD-10-CM Section B95-B97 — imedicalcode.com; accessed 2026-07-25.