A52 vs N34.1
A52 (Late syphilis) compared with N34.1 (Nonspecific urethritis), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. A52 carries an Excludes1 note covering N34.1: “nonspecific and nongonococcal urethritis (N34.1)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| A52Late syphilis | N34.1Nonspecific urethritis | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | N00-N99 — Diseases of the Genitourinary System (N00-N99) |
| Definition | Late syphilis is a non-billable ICD-10-CM category code (A52). | Nonspecific urethritis is a billable ICD-10-CM diagnosis code (N34.1). |
| Includes | — | Nongonococcal urethritis Nonvenereal urethritis |
| Use additional code | — | code (B95-B97), to identify infectious agent. |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources