Emergency: 119
AMDA-IMIC

G44..4 Drug-induced headache, not elsewhere classified

Non-billable header

← G44 — Other headache syndromes Chapter 6: G00-G99

Includes

  • Medication overuse headache

Use Additional Code

  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Last reviewed: September 2026