ICD-10 Code G44.81 – Hypnic headache (2026): Diagnosis, Symptoms & Billing Guide
The ICD-10 code for Hypnic headache is G44.81.2026 ICD-10-CM Diagnosis Code G44.81 – Hypnic headache Related ICD-10 Codes Parent code: G44 – Other headache syndromes Other codes in same category: G44.0 – Cluster headaches and other trigeminal autonomic cephalgias (TAC), G44.00 – Cluster headache syndrome, unspecified, G44.001 – Cluster headache syndrome, unspecified, intractable, G44.009 –…