ICD-10-CM Book 2026 Edition
Chapters ICD-10-CM Book Table of Content /
G40-G47 Episodic and paroxysmal disorders /
G44 Other headache syndromes
Billable ICD-10-CM Code G44.1
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G44.1
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Vascular headache, not elsewhere classified 
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excludes2
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| cluster headache (G44.0) |
| complicated headache syndromes (G44.5-) |
| drug-induced headache (G44.4-) |
| migraine (G43.-) |
| other specified headache syndromes (G44.8-) |
| post-traumatic headache (G44.3-) |
| tension-type headache (G44.2-) |
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