G44: Other headache syndromes excludes1 headache NOS (R51.9) excludes2 atypical facial pain (G50.1) headache due to lumbar puncture (G97.1) migraines (G43.-) trigeminal neuralgia (G50.0) |
| G44.0: Cluster headaches and other trigeminal autonomic cephalgias (TAC) |
| G44.1: Vascular headache, not elsewhere classified |
| G44.2: Tension-type headache |
| G44.3: Post-traumatic headache |
| G44.4: Drug-induced headache, not elsewhere classified |
| G44.5: Complicated headache syndromes |
| G44.8: Other specified headache syndromes |