N21
N21: Calculus of lower urinary tract
Non-billable headerICD-10-CM
N21 is a non-billable header ICD-10-CM code for calculus of lower urinary tract. It cannot be billed on its own: choose one of the more specific child codes below.
Includes
Conditions this code covers.
- calculus of lower urinary tract with cystitis and urethritis
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead N21
4 child codes. Green means billable.