N20-N23: Urolithiasis
ICD-10-CM 2027 block N20-N23 in chapter 14 (Diseases of the genitourinary system) has 4 categories.
- N20 – Calculus of kidney and ureter 4 billable codes
- N21 – Calculus of lower urinary tract 4 billable codes
- N22 – Calculus of urinary tract in diseases classified elsewhere Billable code
- N23 – Unspecified renal colic Billable code