N15.9 vs N39.0
N15.9 (Renal tubulo-interstitial disease, unspecified) compared with N39.0 (Urinary tract infection, site not specified), 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. N15.9 carries an Excludes1 note covering N39.0: “urinary tract infection NOS (N39.0)”
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
| N15.9Renal tubulo-interstitial disease, unspecified | N39.0Urinary tract infection, site not specified | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | N00-N99 — Diseases of the Genitourinary System (N00-N99) | N00-N99 — Diseases of the Genitourinary System (N00-N99) |
| Definition | Renal tubulo-interstitial disease, unspecified is a billable ICD-10-CM diagnosis code (N15.9). | Urinary tract infection, site not specified is a billable ICD-10-CM diagnosis code (N39.0). |
| Includes | pyelonephritis Infection of kidney NOS | — |
| 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