Y463-char group
Antiepileptics and antiparkinsonism drugs
⇄ Primary-code rule changed vs QĐ4469
Coding rules (TT06)
- ●Cannot be used as primary diagnosis
- ●Avoid — more specific 4-5 char codes exist (see below)
Coding guidance (WHO 2019)
Excl.: acetazolamide (Y54.2) barbiturates NEC (Y47.0) benzodiazepines (Y47.1) paraldehyde (Y47.3)