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N21

Calculus of lower urinary tract

• calculus of lower urinary tract with cystitis and urethritis

N21.0

Calculus in bladder

• staghorn calculus (N20.0)

• Calculus in diverticulum of bladder
• Urinary bladder stone

N21.1

Calculus in urethra

• calculus of prostate (N42.0)

N21.8

Other lower urinary tract calculus

N21.9

Calculus of lower urinary tract, unspecified

• calculus of urinary tract NOS (N20.9)