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N21.1

Billable

Calculus in urethra

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A urethral stone is a calculus lodged in the urethra (the tube that carries urine out of the body) and typically causes urinary obstruction and pain.

Coding Tips

  • •This is often an acute presentation requiring urgent intervention
  • •Document the location within the urethra if specified (anterior vs. posterior)

Excludes 2 — Not included here, may code separately

  • calculus of prostate (N42.0)

Code Hierarchy

└N21Calculus of lower urinary tract└N21.1Calculus in urethra
└N21.1Calculus in urethra

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