DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

G43 Migraine

  • Header · not billable

G43 is not billable. The category heads 48 billable codes in FY2027, grouped under 13 subdivisions.

ICD-10 code by name

What is the ICD-10 code for migraine?
Migraine ICD-10 code: G43.909 Migraine, unspecified, not intractable, without status migrainosus. Alphabetic Index: Migraine (idiopathic) → G43.909. Search ICD-10 for migraine
What is the ICD-10 code for migraine headache?
Migraine headache ICD-10 code: G43.909 Migraine, unspecified, not intractable, without status migrainosus. Alphabetic Index: Headachemigraine (type) → G43.909. Search ICD-10 for migraine headache

Where it sits

  1. Chapter 6 Diseases of the nervous system (G00-G99)
  2. G40-G47 Episodic and paroxysmal disorders (G40-G47)
  3. G43 Migraine
Billable codes
48
Subdivisions
13
CC / MCC codes
4 / 0
HCC V28 codes
0
New FY2027
0
Index entries
144

Codes in G43

  1. G43.0
    Migraine without aura
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Common migraine

    Excludes1

    • chronic migraine without aura (G43.7-) G43.7
  2. G43.00
    Migraine without aura, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Migraine without aura without mention of refractory migraine
  3. G43.001
    Migraine without aura, not intractable, with status migrainosus
    Billable
  4. G43.009
    Migraine without aura, not intractable, without status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Migraine without aura NOS
  5. G43.01
    Migraine without aura, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Migraine without aura with refractory migraine
  6. G43.011
    Migraine without aura, intractable, with status migrainosus
    Billable
  7. G43.019
    Migraine without aura, intractable, without status migrainosus
    Billable
  8. G43.1
    Migraine with aura
    Header
    Inclusion terms 10, Excludes1 2, Code also 1

    Inclusion terms

    • Basilar migraine
    • Classical migraine
    • Migraine equivalents
    • Migraine preceded or accompanied by transient focal neurological phenomena
    • Migraine triggered seizures
    • Migraine with acute-onset aura
    • Migraine with aura without headache (migraine equivalents)
    • Migraine with prolonged aura
    • Migraine with typical aura
    • Retinal migraine

    Excludes1

    • chronic migraine with aura (G43.E-) G43.E
    • persistent migraine aura (G43.5-, G43.6-) G43.5 G43.6

    Code also

    • any associated seizure (G40.-, R56.9) G40 R56.9
  9. G43.10
    Migraine with aura, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Migraine with aura without mention of refractory migraine
  10. G43.101
    Migraine with aura, not intractable, with status migrainosus
    Billable
  11. G43.109
    Migraine with aura, not intractable, without status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Migraine with aura NOS
  12. G43.11
    Migraine with aura, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Migraine with aura with refractory migraine
  13. G43.111
    Migraine with aura, intractable, with status migrainosus
    Billable
  14. G43.119
    Migraine with aura, intractable, without status migrainosus
    Billable
  15. G43.4
    Hemiplegic migraine
    Header
    Inclusion terms 2

    Inclusion terms

    • Familial migraine
    • Sporadic migraine
  16. G43.40
    Hemiplegic migraine, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Hemiplegic migraine without refractory migraine
  17. G43.401
    Hemiplegic migraine, not intractable, with status migrainosus
    Billable
  18. G43.409
    Hemiplegic migraine, not intractable, without status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Hemiplegic migraine NOS
  19. G43.41
    Hemiplegic migraine, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Hemiplegic migraine with refractory migraine
  20. G43.411
    Hemiplegic migraine, intractable, with status migrainosus
    Billable
  21. G43.419
    Hemiplegic migraine, intractable, without status migrainosus
    Billable
  22. G43.5
    Persistent migraine aura without cerebral infarction
    Header
  23. G43.50
    Persistent migraine aura without cerebral infarction, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Persistent migraine aura without cerebral infarction, without refractory migraine
  24. G43.501
    Persistent migraine aura without cerebral infarction, not intractable, with status migrainosus
    Billable
  25. G43.509
    Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Persistent migraine aura NOS
  26. G43.51
    Persistent migraine aura without cerebral infarction, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Persistent migraine aura without cerebral infarction, with refractory migraine
  27. G43.511
    Persistent migraine aura without cerebral infarction, intractable, with status migrainosus
    Billable
  28. G43.519
    Persistent migraine aura without cerebral infarction, intractable, without status migrainosus
    Billable
  29. G43.6
    Persistent migraine aura with cerebral infarction
    Header
    Code also 1

    Code also

    • the type of cerebral infarction (I63.-) I63
  30. G43.60
    Persistent migraine aura with cerebral infarction, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Persistent migraine aura with cerebral infarction, without refractory migraine
  31. G43.601
    Persistent migraine aura with cerebral infarction, not intractable, with status migrainosus
    BillableCC
  32. G43.609
    Persistent migraine aura with cerebral infarction, not intractable, without status migrainosus
    BillableCC
  33. G43.61
    Persistent migraine aura with cerebral infarction, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Persistent migraine aura with cerebral infarction, with refractory migraine
  34. G43.611
    Persistent migraine aura with cerebral infarction, intractable, with status migrainosus
    BillableCC
  35. G43.619
    Persistent migraine aura with cerebral infarction, intractable, without status migrainosus
    BillableCC
  36. G43.7
    Chronic migraine without aura
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Transformed migraine

    Excludes1

    • migraine without aura (G43.0-) G43.0
  37. G43.70
    Chronic migraine without aura, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Chronic migraine without aura, without refractory migraine
  38. G43.701
    Chronic migraine without aura, not intractable, with status migrainosus
    Billable
  39. G43.709
    Chronic migraine without aura, not intractable, without status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Chronic migraine without aura NOS
  40. G43.71
    Chronic migraine without aura, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Chronic migraine without aura, with refractory migraine
  41. G43.711
    Chronic migraine without aura, intractable, with status migrainosus
    Billable
  42. G43.719
    Chronic migraine without aura, intractable, without status migrainosus
    Billable
  43. G43.A
    Cyclical vomiting
    Header
    Excludes1 1

    Excludes1

    • cyclical vomiting syndrome unrelated to migraine (R11.15) R11.15
  44. G43.A0
    Cyclical vomiting, in migraine, not intractable
    Billable
    Inclusion terms 1

    Inclusion terms

    • Cyclical vomiting, without refractory migraine
  45. G43.A1
    Cyclical vomiting, in migraine, intractable
    Billable
    Inclusion terms 1

    Inclusion terms

    • Cyclical vomiting, with refractory migraine
  46. G43.B
    Ophthalmoplegic migraine
    Header
  47. G43.B0
    Ophthalmoplegic migraine, not intractable
    Billable
    Inclusion terms 1

    Inclusion terms

    • Ophthalmoplegic migraine, without refractory migraine
  48. G43.B1
    Ophthalmoplegic migraine, intractable
    Billable
    Inclusion terms 1

    Inclusion terms

    • Ophthalmoplegic migraine, with refractory migraine
  49. G43.C
    Periodic headache syndromes in child or adult
    Header
  50. G43.C0
    Periodic headache syndromes in child or adult, not intractable
    Billable
    Inclusion terms 1

    Inclusion terms

    • Periodic headache syndromes in child or adult, without refractory migraine
  51. G43.C1
    Periodic headache syndromes in child or adult, intractable
    Billable
    Inclusion terms 1

    Inclusion terms

    • Periodic headache syndromes in child or adult, with refractory migraine
  52. G43.D
    Abdominal migraine
    Header
  53. G43.D0
    Abdominal migraine, not intractable
    Billable
    Inclusion terms 1

    Inclusion terms

    • Abdominal migraine, without refractory migraine
  54. G43.D1
    Abdominal migraine, intractable
    Billable
    Inclusion terms 1

    Inclusion terms

    • Abdominal migraine, with refractory migraine
  55. G43.8
    Other migraine
    Header
  56. G43.80
    Other migraine, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Other migraine, without refractory migraine
  57. G43.801
    Other migraine, not intractable, with status migrainosus
    Billable
  58. G43.809
    Other migraine, not intractable, without status migrainosus
    Billable
  59. G43.81
    Other migraine, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Other migraine, with refractory migraine
  60. G43.811
    Other migraine, intractable, with status migrainosus
    Billable
  61. G43.819
    Other migraine, intractable, without status migrainosus
    Billable
  62. G43.82
    Menstrual migraine, not intractable
    Header
    Inclusion terms 6, Code also 1

    Inclusion terms

    • Menstrual headache, not intractable
    • Menstrual migraine, without refractory migraine
    • Menstrually related migraine, not intractable
    • Pre-menstrual headache, not intractable
    • Pre-menstrual migraine, not intractable
    • Pure menstrual migraine, not intractable

    Code also

    • associated premenstrual tension syndrome (N94.3) N94.3
  63. G43.821
    Menstrual migraine, not intractable, with status migrainosus
    Billable
  64. G43.829
    Menstrual migraine, not intractable, without status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Menstrual migraine NOS
  65. G43.83
    Menstrual migraine, intractable
    Header
    Inclusion terms 6, Code also 1

    Inclusion terms

    • Menstrual headache, intractable
    • Menstrual migraine, with refractory migraine
    • Menstrually related migraine, intractable
    • Pre-menstrual headache, intractable
    • Pre-menstrual migraine, intractable
    • Pure menstrual migraine, intractable

    Code also

    • associated premenstrual tension syndrome (N94.3) N94.3
  66. G43.831
    Menstrual migraine, intractable, with status migrainosus
    Billable
  67. G43.839
    Menstrual migraine, intractable, without status migrainosus
    Billable
  68. G43.9
    Migraine, unspecified
    Header
  69. G43.90
    Migraine, unspecified, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Migraine, unspecified, without refractory migraine
  70. G43.901
    Migraine, unspecified, not intractable, with status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Status migrainosus NOS
  71. G43.909
    Migraine, unspecified, not intractable, without status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Migraine NOS
  72. G43.91
    Migraine, unspecified, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Migraine, unspecified, with refractory migraine
  73. G43.911
    Migraine, unspecified, intractable, with status migrainosus
    Billable
  74. G43.919
    Migraine, unspecified, intractable, without status migrainosus
    Billable
  75. G43.E
    Chronic migraine with aura
    Header
    Excludes1 1

    Excludes1

    • migraine with aura (G43.1-) G43.1
  76. G43.E0
    Chronic migraine with aura, not intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Chronic migraine with aura, without refractory migraine
  77. G43.E01
    Chronic migraine with aura, not intractable, with status migrainosus
    Billable
  78. G43.E09
    Chronic migraine with aura, not intractable, without status migrainosus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Chronic migraine with aura NOS
  79. G43.E1
    Chronic migraine with aura, intractable
    Header
    Inclusion terms 1

    Inclusion terms

    • Chronic migraine with aura, with refractory migraine
  80. G43.E11
    Chronic migraine with aura, intractable, with status migrainosus
    Billable
  81. G43.E19
    Chronic migraine with aura, intractable, without status migrainosus
    Billable

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At G43

Notes

  • the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled

Excludes1

  • lower half migraine (G44.00) G44.00

Excludes2

  • headache NOS (R51.9) R51.9
  • headache syndromes (G44.-) G44

Use additional code

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

Notes that also apply

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.

Index entries

  • Cyclical vomiting, in migraine, → G43.A0
  • Migraine (idiopathic) → G43.909
  • Migraine (idiopathic)without aura → G43.009
  • Migraine (idiopathic)with aura (acute-onset) (prolonged) (typical) (without headache) → G43.109
  • Migraine (idiopathic)complicated → G43.109
  • Migraine (idiopathic)hemiplegic → G43.409
  • Vomitingcyclical, in migraine, → G43.A0
  • Migraine (idiopathic)ophthalmoplegic → G43.B0
  • Headacheperiodic syndromes in adults and children → G43.C0
  • Migraine (idiopathic)abdominal → G43.D0
  • Migraine (idiopathic)specified NEC → G43.809
  • Migraine (idiopathic)menstrual → G43.829
  • Headachemigraine (type) → G43.909
  • Hemicraniameaning migraine → G43.909
  • Migraine (idiopathic)not intractable → G43.909
  • Migraine (idiopathic)without refractory migraine → G43.909
  • Syndromemigraine → G43.909-
  • Migraine (idiopathic)with refractory migraine → G43.919
  • Migraine (idiopathic)intractable → G43.919
  • Migraine (idiopathic)without aurawithout mention of refractory migraine → G43.009
  • Migraine (idiopathic)without aurawith refractory migraine → G43.019
  • Migraine (idiopathic)with aura (acute-onset) (prolonged) (typical) (without headache)not intractable → G43.109
  • Migraine (idiopathic)with aura (acute-onset) (prolonged) (typical) (without headache)without mention of refractory migraine → G43.109
  • Migraine (idiopathic)with aura (acute-onset) (prolonged) (typical) (without headache)with refractory migraine → G43.119
  • Migraine (idiopathic)with aura (acute-onset) (prolonged) (typical) (without headache)intractable → G43.119
  • Migraine (idiopathic)hemiplegicnot intractable → G43.409
  • Migraine (idiopathic)hemiplegicwithout refractory migraine → G43.409
  • Migraine (idiopathic)hemiplegicwith refractory migraine → G43.419
  • Migraine (idiopathic)hemiplegicintractable → G43.419
  • Migraine (idiopathic)with aura (acute-onset) (prolonged) (typical) (without headache)persistent → G43.509
  • Migraine (idiopathic)without aurachronic → G43.709
  • Vomitingcyclical, in migraine,not intractable → G43.A0
  • Vomitingcyclical, in migraine,without refractory migraine → G43.A0
  • Vomitingcyclical, in migraine,with refractory migraine → G43.A1
  • Vomitingcyclical, in migraine,intractable → G43.A1
  • Migraine (idiopathic)ophthalmoplegicnot intractable → G43.B0
  • Migraine (idiopathic)ophthalmoplegicwithout refractory migraine → G43.B0
  • Migraine (idiopathic)ophthalmoplegicwith refractory migraine → G43.B1
  • Migraine (idiopathic)ophthalmoplegicintractable → G43.B1
  • Headacheperiodic syndromes in adults and childrennot intractable → G43.C0

104 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy