A52 vs B20
A52 (Late syphilis) compared with B20 (Human immunodeficiency virus [HIV] disease), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. A52 carries an Excludes2 note covering B20: “human immunodeficiency virus [HIV] disease (B20)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| A52Late syphilis | B20Human immunodeficiency virus [HIV] disease | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) |
| Definition | Late syphilis is a non-billable ICD-10-CM category code (A52). | Human immunodeficiency virus [HIV] disease is a billable ICD-10-CM diagnosis code (B20). |
| Includes | — | acquired immune deficiency syndrome [AIDS] AIDS-related complex [ARC] HIV infection, symptomatic |
| Use additional code | — | code(s) to identify all manifestations of HIV infection |
| Code first | — | Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources