B33.3

Retrovirus infections, not elsewhere classified

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 5 never code together

Excludes1

Excludes2

carrier or suspected carrier of infectious disease (Z22.-)Z22.-
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
influenza and other acute respiratory infections (J00-J22)J00-J22

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 3

Inclusion terms

Includes

Use additional code

Index entries leading here 2

Infection, infected, infective (opportunistic) B99.9
- human
  - T-cell lymphotropic virus type-1 (HTLV-1) B33.3
- retrovirus B33.3
Human
- T-cell lymphotropic virus
  - type-1 (HTLV-I) infection B33.3

Alongside this code 5 same parent — B33

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.