N203-char group
Calculus of kidney and ureter
⇄ Primary-code rule changed vs QĐ4469
Coding rules (TT06)
- ●Avoid — more specific 4-5 char codes exist (see below)
Coding guidance (WHO 2019)
Incl.: calculous pyelonephritis Excl.: with hydronephrosis (N13.2)