N21 Calculus of lower urinary tract
ICD-10-CM category N21 sits in Chapter 14 (Diseases of the genitourinary system, N00-N99). It contains 4 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Billable codes in N21
| Code | Description |
|---|---|
N21.0 | Calculus in bladder |
N21.1 | Calculus in urethra |
N21.8 | Other lower urinary tract calculus |
N21.9 | Calculus of lower urinary tract, unspecified |
Search within ICD-10-CM for N21 and related codes
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