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G44.1

✓ Billable

Vascular headache, not elsewhere classified

Diseases of the nervous system (G00-G99)

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❌ Excludes1

inherited from G44

Rules from parent category G44: Other headache syndromes

  • • headache NOS (R51.9)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • 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-)

⚠️ Excludes2

inherited from G44

Rules from parent category G44: Other headache syndromes

  • • atypical facial pain (G50.1)
  • • headache due to lumbar puncture (G97.1)
  • • migraines (G43.-)
  • • trigeminal neuralgia (G50.0)

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Code Information

CodeG44.1
BillableYes
ParentG44
CategoryDiseases of the nervous system (G00-G99)
Excludes11 rule(s)
Excludes211 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)