G43.E19 Chronic migraine with aura, intractable, without status migrainosus
Billable ICD-10-CM code, FY2026.
Applies from G43 Migraine
Excludes1 (never code together)
headache NOS (R51.9)
lower half migraine (G44.00)
Excludes2 (not included here)
headache syndromes (G44.-)
Use additional code
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Notes
the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
Applies from G43.E Chronic migraine with aura
Excludes1 (never code together)
migraine with aura (G43.1-)
Applies from G43.E1 Chronic migraine with aura, intractable
Applicable to
Chronic migraine with aura, with refractory migraine
Risk adjustment (HCC)
RxHCC V08: HCC 166 — Migraine Headaches
MS-DRG index
Defines the logic of DRG(s) 102-103 in MDC 01.
Code annotations containing back-references to G43.E19
Back-references to G43.E
Type 1 Excludes: G43.1 Migraine with aura ("chronic migraine with aura (G43.E-)")
Back-references to G43
Type 2 Excludes: G44 Other headache syndromes ("migraines (G43.-)")
Type 2 Excludes: G44.1 Vascular headache, not elsewhere classified ("migraine (G43.-)")
Type 2 Excludes: G89 Pain, not elsewhere classified ("migraines (G43.-)")
Type 2 Excludes: R51 Headache ("migraine and other headache syndromes (G43-G44)")
Diagnosis Index entries for G43.E19
Migraine (idiopathic) › with aura (acute-onset) (prolonged) (typical) (without headache) › chronic › with refractory migraine
Migraine (idiopathic) › with aura (acute-onset) (prolonged) (typical) (without headache) › chronic › with refractory migraine › without status migrainosus
Migraine (idiopathic) › with aura (acute-onset) (prolonged) (typical) (without headache) › chronic › intractable › without status migrainosus
Nearby codes
G43.E0 Chronic migraine with aura, not intractable
G43.E01 Chronic migraine with aura, not intractable, with status migrainosus
G43.E09 Chronic migraine with aura, not intractable, without status migrainosus