G43.A1 is the authoritative medical code for Cyclical vomiting, in migraine, intractable. This classification is used in medical billing and clinical recording to specify the clinical criteria for cyclical vomiting, in migraine, intractable (ICD-10-CM G43.A1), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Cyclical vomiting, in migraine, intractable is a billable ICD-10-CM diagnosis code G43.A1. Inclusion terms: Cyclical vomiting, with refractory migraine. Excludes1 (not coded here): cyclical vomiting syndrome unrelated to migraine R11.15; lower half migraine G44.00. Excludes2 (not included here): headache NOS R51.9; headache syndromes G44.-. Use additional code: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for G43.A1 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Cyclical vomiting, with refractory migraine
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- cyclical vomiting syndrome unrelated to migraine R11.15
- lower half migraine G44.00
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- headache NOS R51.9
- headache syndromes G44.-
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with G43.A1?
Per Excludes1 instructions, G43.A1 must not be reported with: cyclical vomiting syndrome unrelated to migraine (R11.15); lower half migraine (G44.00).
Can G43.A1 be reported alongside related conditions?
Per Excludes2 instructions, G43.A1 and the following may both be reported when both are present: headache NOS (R51.9); headache syndromes (G44.-).
Is an additional code needed with G43.A1?
Use additional code(s) to specify: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
What conditions are included under G43.A1?
Cyclical vomiting, in migraine, intractable includes: Cyclical vomiting, with refractory migraine.
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as G43.A1, with their registry titles.
- G43 — Migraine
- G43.0 — Migraine without aura
- G43.001 — Migraine without aura, not intractable, with status migrainosus
- G43.009 — Migraine without aura, not intractable, without status migrainosus
- G43.011 — Migraine without aura, intractable, with status migrainosus
- G43.019 — Migraine without aura, intractable, without status migrainosus
- G43.1 — Migraine with aura
- G43.101 — Migraine with aura, not intractable, with status migrainosus
- G43.109 — Migraine with aura, not intractable, without status migrainosus
- G43.111 — Migraine with aura, intractable, with status migrainosus
- G43.119 — Migraine with aura, intractable, without status migrainosus
- G43.4 — Hemiplegic migraine
- G43.401 — Hemiplegic migraine, not intractable, with status migrainosus
- G43.409 — Hemiplegic migraine, not intractable, without status migrainosus
- G43.411 — Hemiplegic migraine, intractable, with status migrainosus
- G43.419 — Hemiplegic migraine, intractable, without status migrainosus
- G43.5 — Persistent migraine aura without cerebral infarction
- G43.501 — Persistent migraine aura without cerebral infarction, not intractable, with status migrainosus
- G43.509 — Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus
- G43.511 — Persistent migraine aura without cerebral infarction, intractable, with status migrainosus
- G43.519 — Persistent migraine aura without cerebral infarction, intractable, without status migrainosus
- G43.6 — Persistent migraine aura with cerebral infarction
- G43.601 — Persistent migraine aura with cerebral infarction, not intractable, with status migrainosus
- G43.609 — Persistent migraine aura with cerebral infarction, not intractable, without status migrainosus
- G43.611 — Persistent migraine aura with cerebral infarction, intractable, with status migrainosus
- G43.619 — Persistent migraine aura with cerebral infarction, intractable, without status migrainosus
- G43.7 — Chronic migraine without aura
- G43.701 — Chronic migraine without aura, not intractable, with status migrainosus
- G43.709 — Chronic migraine without aura, not intractable, without status migrainosus
- G43.711 — Chronic migraine without aura, intractable, with status migrainosus
- G43.719 — Chronic migraine without aura, intractable, without status migrainosus
- G43.8 — Other migraine
- G43.801 — Other migraine, not intractable, with status migrainosus
- G43.809 — Other migraine, not intractable, without status migrainosus
- G43.811 — Other migraine, intractable, with status migrainosus
- G43.819 — Other migraine, intractable, without status migrainosus
- G43.821 — Menstrual migraine, not intractable, with status migrainosus
- G43.829 — Menstrual migraine, not intractable, without status migrainosus
- G43.831 — Menstrual migraine, intractable, with status migrainosus
- G43.839 — Menstrual migraine, intractable, without status migrainosus
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Vomiting, cyclical, in migraine,, intractable
- Vomiting, cyclical, in migraine,, with refractory migraine
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: