2023 ICD-10-CM Diagnosis Code G43.4

Hemiplegic migraine

    2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  • G43.4 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2023 edition of ICD-10-CM G43.4 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of G43.4 - other international versions of ICD-10 G43.4 may differ.
Applicable To
  • Familial migraine
  • Sporadic migraine
The following code(s) above G43.4 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G43.4:
  • G00-G99
    2023 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the nervous system
  • G43
    ICD-10-CM Diagnosis Code G43


      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    • the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
    Type 1 Excludes
    Type 2 Excludes
    • headache syndromes (G44.-)
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To G43.4
G43.01 Migraine without aura, intractable
G43.011 …… with status migrainosus
G43.019 …… without status migrainosus
G43.1 Migraine with aura
G43.10 Migraine with aura, not intractable
G43.101 …… with status migrainosus
G43.109 …… without status migrainosus
G43.11 Migraine with aura, intractable
G43.111 …… with status migrainosus
G43.119 …… without status migrainosus
G43.4 Hemiplegic migraine
G43.40 Hemiplegic migraine, not intractable
G43.401 …… with status migrainosus
G43.409 …… without status migrainosus
G43.41 Hemiplegic migraine, intractable
G43.411 …… with status migrainosus
G43.419 …… without status migrainosus
G43.5 Persistent migraine aura without cerebral infarction
G43.50 Persistent migraine aura without cerebral infarction, not intractable
G43.501 …… with status migrainosus
G43.509 …… without status migrainosus

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.