Histamine Desensitization Therapy for Intractable Headaches

Aetna considers histamine desensitization therapy experimental and investigational and does not cover it for intractable headaches (including chronic cluster headaches and migraines). It is excluded because effectiveness has not been established by randomized controlled trials, specifically for ICD‑10 codes G43.001–G43.919 (migraines), G44.001–G44.029 (cluster headaches), G44.1 (vascular headache NEC), and G44.201–G44.229 (tension‑type headaches).

"None — Aetna considers histamine desensitization therapy (e."

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