N213-char group

Calculus of lower urinary tract

⇄ Primary-code rule changed vs QĐ4469

Coding rules (TT06)

●Avoid — more specific 4-5 char codes exist (see below)

Coding guidance (WHO 2019)

Incl.: with cystitis and urethritis

Codes within N21

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