G433-char group
Migraine
⇄ Primary-code rule changed vs QĐ4469
Coding rules (TT06)
- ●Avoid — more specific 4-5 char codes exist (see below)
Coding guidance (WHO 2019)
Use additional external cause code (Chapter XX), if desired, to identify drug, if drug-induced. Excl.: headache NOS (R51)