ICD-10-CM · Chapter 14 · N00-N99
N22 Calculus of urinary tract in diseases classified elsewhere
Code First
- underlying disease, such as:
- gout (M1A.-, M10.-)
- schistosomiasis (B65.0-B65.9)
This category is a complete, billable diagnosis code.
No additional specificity is required — submit N22 directly on claims and documentation without a subcode extension.
Last reviewed: September 2026