ICD-10-CM · Chapter 14 · N00-N99
N20 Calculus of kidney and ureter
Includes
- Calculous pyelonephritis
Excludes 1 (cannot be coded together)
- nephrocalcinosis (E83.59)
- that with hydronephrosis (N13.2)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| N20..0 | Calculus of kidney | Yes |
| N20..1 | Calculus of ureter | Yes |
| N20..2 | Calculus of kidney with calculus of ureter | Yes |
| N20..9 | Urinary calculus, unspecified | Yes |
Plain-language term for this code
The following entry in the US Medical Glossary corresponds to ICD-10-CM category N20:
- Kidney Stones — Cálculos renales
Last reviewed: September 2026