G44.40

✓ Billable

Drug-induced headache, not elsewhere classified, not intractable

Diseases of the nervous system (G00-G99)

📋 Code Instructions

from G44.4

• code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

✅ No additional coding notes for G44.40

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Code Information

CodeG44.40

BillableYes

ParentG44.4

CategoryDiseases of the nervous system (G00-G99)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)