ICD-10-CM · Chapter 14 · N00–N99
N21.9
Calculus of lower urinary tract, unspecified
Diseases of the genitourinary system
Quick facts
- Code
- N21.9
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 14 — Diseases of the genitourinary system
- Category
- N21 — Calculus of lower urinary tract
- Specificity
- 4 characters
How coders use this code
ICD-10-CM N21.9 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of calculus of lower urinary tract, unspecified. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in N21
Want to learn coding?
Master ICD-10-CM in 90 days.
Medita's 90-day curriculum is calibrated to the CPC (AAPC), CCA, and CCS (AHIMA) exam blueprints. Day 1 is free.