G44.8: Other specified headache syndromes excludes2 headache with orthostatic or positional component, not elsewhere classified (R51.0) |
| G44.81: Hypnic headache |
| G44.82: Headache associated with sexual activity |
| G44.83: Primary cough headache |
| G44.84: Primary exertional headache |
| G44.85: Primary stabbing headache |
| G44.86: Cervicogenic headache |
| G44.89: Other headache syndrome |