ICD-10 Code G43.A0 – Cyclical vomiting, in migraine, not intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.A0 – Cyclical vomiting, in migraine, not intractable
What it is
This code identifies cyclical vomiting associated with migraine that is not described as intractable. Use it when the record links recurrent vomiting episodes to migraine and does not document refractory or unrelenting symptoms.
Clinical signs
Clinical features vary; refer to documentation. Typical records describe repeated vomiting episodes occurring in a cyclical pattern, often alongside migraine history or migraine symptoms.
When to use this code
Use G43.A0 when the provider documents cyclical vomiting as part of a migraine diagnosis and specifically states it is not intractable. It may apply in outpatient, emergency, or specialty notes when the relationship to migraine is clear. Check documentation if the chart only mentions vomiting without migraine linkage.
Do not use for
Do not use this code for vomiting due to another cause, or when migraine is not documented as the underlying condition. If the record says intractable, select the appropriate intractable code instead.
Coding tip
Code the migraine-related vomiting only when the provider clearly documents the connection and the nonintractable status.