N21.9
N21.9: Calculus of lower urinary tract, unspecified
Billable / specific codeICD-10-CM
N21.9 is a billable, specific ICD-10-CM code for calculus of lower urinary tract, unspecified. It is valid for submission on a claim.
Check N21.9 with the rest of the claim: free scrubberExcludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- calculus of urinary tract NOS (N20.9)
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Calculus, calculi, calculous›urinary›lower
- Stone›urinary›lower tract
Code history
Unchanged in every release from FY2024 to FY2027.