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G43.A

⚠ Non-billable (Header)

Cyclical vomiting

Diseases of the nervous system (G00-G99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

direct

Cannot be coded with G43.A

  • • cyclical vomiting syndrome unrelated to migraine (R11.15)

❌ Excludes1

inherited from G43

Rules from parent category G43: Migraine

  • • lower half migraine (G44.00)

⚠️ Excludes2

inherited from G43

Rules from parent category G43: Migraine

  • • headache NOS (R51.9)
  • • headache syndromes (G44.-)

📋 Code Instructions

from G43
  • • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Child Codes (2)

G43.A0Cyclical vomiting, in migraine, not intractableG43.A1Cyclical vomiting, in migraine, intractable

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Code Information

CodeG43.A
BillableNo — Header code
ParentG43
CategoryDiseases of the nervous system (G00-G99)
Excludes12 rule(s)
Excludes22 note(s)
Child codes2

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)