N21
Non-billableCalculus of lower urinary tract
N21 is the ICD-10-CM code for Calculus of lower urinary tract. It is a non-billable category code — use a more specific child code such as N21.0 for billing.
- Status
- Header (non-billable)
- Chapter
- N00-N99
- Subcodes
- 4
- Edition
- FY2026
N00-N99 Diseases of the genitourinary system
Includes
- •calculus of lower urinary tract with cystitis and urethritis
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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