N31 vs O23
N31 (Neuromuscular dysfunction of bladder, not elsewhere classified) compared with O23 (Infections of genitourinary tract in pregnancy), 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. N31 carries an Excludes2 note covering O23: “pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| N31Neuromuscular dysfunction of bladder, not elsewhere classified | O23Infections of genitourinary tract in pregnancy | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | N00-N99 — Diseases of the Genitourinary System (N00-N99) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Neuromuscular dysfunction of bladder, not elsewhere classified is a non-billable ICD-10-CM category code (N31). | Infections of genitourinary tract in pregnancy is a non-billable ICD-10-CM category code (O23). |
| Use additional code | code to identify any associated urinary incontinence (N39.3-N39.4-) | code to identify organism (B95.-, B96.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources