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HomeICD-10 CodesN21
ICD-10-CM
Non-billable

N21

Classification
Category:Diseases of the genitourinary system
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Coding Guidance
N21 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail. See Related Codes to drill down to more specific billable codes for appropriate reimbursement.
Inclusion Terms
  • calculus of lower urinary tract with cystitis and urethritis
Excludes 2
From N00-N99

More Specific Codes

N21.0
Calculus in bladder
N21.1
Calculus in urethra
N21.8
Other lower urinary tract calculus
N21.9
Calculus of lower urinary tract, unspecified

External Resources

2025 ICD-10 guidelines from CMS.gov