2020 ICD-10-CM Diagnosis Code G43.C1

Periodic headache syndromes in child or adult, intractable

    2016 2017 2018 2019 2020 Billable/Specific Code
  • G43.C1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM G43.C1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G43.C1 - other international versions of ICD-10 G43.C1 may differ.
Applicable To
  • Periodic headache syndromes in child or adult, with refractory migraine
The following code(s) above G43.C1 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.C1:
  • G00-G99
    2020 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

    Migraine

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Note
    • the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
    Type 1 Excludes
    • headache NOS (R51)
    • lower half migraine (G44.00)
    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)
    Migraine
Approximate Synonyms
  • Intractable periodic headache syndrome
  • Intractable periodic headache with status migrainosus
  • Periodic headache syndromes
  • Periodic headache syndromes, intractable
ICD-10-CM G43.C1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 102 Headaches with mcc
  • 103 Headaches without mcc

Convert G43.C1 to ICD-9-CM

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

Diagnosis Index entries containing back-references to G43.C1:
  • Headache R51
    ICD-10-CM Diagnosis Code R51

    Headache

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Facial pain NOS
    Type 1 Excludes
    • atypical face pain (G50.1)
    • migraine and other headache syndromes (G43-G44)
    • trigeminal neuralgia (G50.0)
    • periodic syndromes in adults and children G43.C0
      ICD-10-CM Diagnosis Code G43.C0

      Periodic headache syndromes in child or adult, not intractable

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Periodic headache syndromes in child or adult, without refractory migraine
      • with refractory migraine G43.C1
      • intractable G43.C1

ICD-10-CM Codes Adjacent To G43.C1
G43.711 …… with status migrainosus
G43.719 …… without status migrainosus
G43.A Cyclical vomiting
G43.A0 …… in migraine, not intractable
G43.A1 …… in migraine, intractable
G43.B Ophthalmoplegic migraine
G43.B0 …… not intractable
G43.B1 …… intractable
G43.C Periodic headache syndromes in child or adult
G43.C0 …… not intractable
G43.C1 …… intractable
G43.D Abdominal migraine
G43.D0 …… not intractable
G43.D1 …… intractable
G43.8 Other migraine
G43.80 Other migraine, not intractable
G43.801 …… with status migrainosus
G43.809 …… without status migrainosus
G43.81 Other migraine, intractable
G43.811 …… with status migrainosus
G43.819 …… without status migrainosus

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