I153-char group
Secondary hypertension
⇄ Primary-code rule changed vs QĐ4469
Coding rules (TT06)
- ●Not recommended as primary diagnosis
- ●Avoid — more specific 4-5 char codes exist (see below)
Coding guidance (WHO 2019)
Excl.: involving vessels of: brain (I60-I69) eye (H35.0)