N30.01 vs R31.21
N30.01 (Acute cystitis with hematuria) compared with R31.21 (Asymptomatic microscopic hematuria), 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. R31.21 carries an Excludes1 note covering N30.01: “acute cystitis with hematuria (N30.01)”
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
| N30.01Acute cystitis with hematuria | R31.21Asymptomatic microscopic hematuria | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | N00-N99 — Diseases of the Genitourinary System (N00-N99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Acute cystitis with hematuria is a billable ICD-10-CM diagnosis code (N30.01). | Asymptomatic microscopic hematuria is a billable ICD-10-CM diagnosis code (R31.21). |
| Includes | — | AMH |
| Use additional code | code to identify infectious agent (B95-B97) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources