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G43Non-billableSave

G43 - Migraine

ICD-10-CM Chapter 6: Diseases of the nervous system · G40-G47 Episodic and paroxysmal disorders (G40-G47) · Top-level category · FY2027

Coding Guidance

G43 is a non-billable heading. Report one of the 13 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom G43

Mutually exclusive: these conditions are never reported together with this code.

  • lower half migraine (G44.00)
Excludes 2 — Not Included HereFrom G43

Not part of this code; report both codes when the patient has both conditions.

  • headache NOS (R51.9)
  • headache syndromes (G44.-)
Use Additional CodeFrom G43

Add a secondary code to identify the associated condition or cause when it is documented.

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

Instructional notes from the ICD-10-CM tabular list.

  • the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
Excludes 2 — Not Included HereFrom Chapter G00-G99

Not part of this code; report both codes when the patient has both conditions.

  • 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)

More Specific Codes (13)

G43.0Migraine without aura→G43.1Migraine with aura→G43.4Hemiplegic migraine→G43.5Persistent migraine aura without cerebral infarction→G43.6Persistent migraine aura with cerebral infarction→G43.7Chronic migraine without aura→G43.8Other migraine→G43.9Migraine, unspecified→G43.ACyclical vomiting→G43.BOphthalmoplegic migraine→G43.CPeriodic headache syndromes in child or adult→G43.DAbdominal migraine→G43.EChronic migraine with aura→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with G43.