A54.21 vs N29
A54.21 (Gonococcal infection of kidney and ureter) compared with N29 (Other disorders of kidney and ureter in diseases classified elsewhere), 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. N29 carries an Excludes1 note covering A54.21: “gonorrhea (A54.21)”
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
| A54.21Gonococcal infection of kidney and ureter | N29Other disorders of kidney and ureter in diseases classified elsewhere | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | N00-N99 — Diseases of the Genitourinary System (N00-N99) |
| Definition | Gonococcal infection of kidney and ureter is a billable ICD-10-CM diagnosis code (A54.21). | Other disorders of kidney and ureter in diseases classified elsewhere is a billable ICD-10-CM diagnosis code (N29). |
| Code first | — | underlying disease, such as: amyloidosis (E85.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources