N21.9✓ Billable
Calculus of lower urinary tract, unspecified
✗ Excludes 1(Not coded here)
- •calculus of urinary tract NOS (N20.9)
Code Hierarchy
┌14Diseases of the genitourinary system (N00-N99)├N20-N23Urolithiasis (N20-N23)├N21Calculus of lower urinary tract
└N21.9Calculus of lower urinary tract, unspecified
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