Urolithiasis (N20-N23) ICD-10-CM
The N20–N23 section covers urolithiasis with 12 ICD-10-CM diagnosis codes, of which 10 are billable in fiscal year 2027. The section is organized into the 4 code ranges listed below.
Code Ranges in This Section 4 ranges · 12 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the N20–N23 Code Range
Urinary stones can occur in the kidneys, ureters, bladder, or urethra. This group also includes unspecified renal colic, or kidney pain.
N20 separates stones in the kidney, ureter, or both, with another subdivision for an unspecified urinary stone. N21 separates lower urinary tract stones by site, including the bladder and urethra. N22 identifies urinary tract stones in diseases classified elsewhere. N23 identifies unspecified renal colic.
Questions About This Page
How many codes are in the N20-N23 range?
The N20-N23 range contains 12 ICD-10-CM diagnosis codes in FY 2027. 10 of them are billable, and the rest are category headers that organize the section.
What conditions does N20-N23 cover?
The range covers urolithiasis. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
