DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

I63 Cerebral infarction

  • Header · not billable

I63 is not billable. The category heads 91 billable codes in FY2027, grouped under 9 subdivisions.

Index → code

  • RIND (reversible ischemic neurologic deficit) → I63.9
  • Stroke (apoplectic) (brain) (ischemic) (paralytic) → I63.9
  • PRIND (Prolonged reversible ischemic neurologic deficit) → I63.9

Where it sits

  1. Chapter 9 Diseases of the circulatory system (I00-I99)
  2. I60-I69 Cerebrovascular diseases (I60-I69)
  3. I63 Cerebral infarction
Billable codes
91
Subdivisions
9
CC / MCC codes
0 / 91
HCC V28 codes
91
New FY2027
0
Index entries
91

Codes in I63

  1. I63.0
    Cerebral infarction due to thrombosis of precerebral arteries
    Header
  2. I63.00
    Cerebral infarction due to thrombosis of unspecified precerebral artery
    BillableMCC249
  3. I63.01
    Cerebral infarction due to thrombosis of vertebral artery
    Header
  4. I63.011
    Cerebral infarction due to thrombosis of right vertebral artery
    BillableMCC249
  5. I63.012
    Cerebral infarction due to thrombosis of left vertebral artery
    BillableMCC249
  6. I63.013
    Cerebral infarction due to thrombosis of bilateral vertebral arteries
    BillableMCC249
  7. I63.019
    Cerebral infarction due to thrombosis of unspecified vertebral artery
    BillableMCC249
  8. I63.02
    Cerebral infarction due to thrombosis of basilar artery
    BillableMCC249
  9. I63.03
    Cerebral infarction due to thrombosis of carotid artery
    Header
  10. I63.031
    Cerebral infarction due to thrombosis of right carotid artery
    BillableMCC249
  11. I63.032
    Cerebral infarction due to thrombosis of left carotid artery
    BillableMCC249
  12. I63.033
    Cerebral infarction due to thrombosis of bilateral carotid arteries
    BillableMCC249
  13. I63.039
    Cerebral infarction due to thrombosis of unspecified carotid artery
    BillableMCC249
  14. I63.09
    Cerebral infarction due to thrombosis of other precerebral artery
    BillableMCC249
  15. I63.1
    Cerebral infarction due to embolism of precerebral arteries
    Header
  16. I63.10
    Cerebral infarction due to embolism of unspecified precerebral artery
    BillableMCC249
  17. I63.11
    Cerebral infarction due to embolism of vertebral artery
    Header
  18. I63.111
    Cerebral infarction due to embolism of right vertebral artery
    BillableMCC249
  19. I63.112
    Cerebral infarction due to embolism of left vertebral artery
    BillableMCC249
  20. I63.113
    Cerebral infarction due to embolism of bilateral vertebral arteries
    BillableMCC249
  21. I63.119
    Cerebral infarction due to embolism of unspecified vertebral artery
    BillableMCC249
  22. I63.12
    Cerebral infarction due to embolism of basilar artery
    BillableMCC249
  23. I63.13
    Cerebral infarction due to embolism of carotid artery
    Header
  24. I63.131
    Cerebral infarction due to embolism of right carotid artery
    BillableMCC249
  25. I63.132
    Cerebral infarction due to embolism of left carotid artery
    BillableMCC249
  26. I63.133
    Cerebral infarction due to embolism of bilateral carotid arteries
    BillableMCC249
  27. I63.139
    Cerebral infarction due to embolism of unspecified carotid artery
    BillableMCC249
  28. I63.19
    Cerebral infarction due to embolism of other precerebral artery
    BillableMCC249
  29. I63.2
    Cerebral infarction due to unspecified occlusion or stenosis of precerebral arteries
    Header
  30. I63.20
    Cerebral infarction due to unspecified occlusion or stenosis of unspecified precerebral arteries
    BillableMCC249
  31. I63.21
    Cerebral infarction due to unspecified occlusion or stenosis of vertebral arteries
    Header
  32. I63.211
    Cerebral infarction due to unspecified occlusion or stenosis of right vertebral artery
    BillableMCC249
  33. I63.212
    Cerebral infarction due to unspecified occlusion or stenosis of left vertebral artery
    BillableMCC249
  34. I63.213
    Cerebral infarction due to unspecified occlusion or stenosis of bilateral vertebral arteries
    BillableMCC249
  35. I63.219
    Cerebral infarction due to unspecified occlusion or stenosis of unspecified vertebral artery
    BillableMCC249
  36. I63.22
    Cerebral infarction due to unspecified occlusion or stenosis of basilar artery
    BillableMCC249
  37. I63.23
    Cerebral infarction due to unspecified occlusion or stenosis of carotid arteries
    Header
  38. I63.231
    Cerebral infarction due to unspecified occlusion or stenosis of right carotid arteries
    BillableMCC249
  39. I63.232
    Cerebral infarction due to unspecified occlusion or stenosis of left carotid arteries
    BillableMCC249
  40. I63.233
    Cerebral infarction due to unspecified occlusion or stenosis of bilateral carotid arteries
    BillableMCC249
  41. I63.239
    Cerebral infarction due to unspecified occlusion or stenosis of unspecified carotid artery
    BillableMCC249
  42. I63.29
    Cerebral infarction due to unspecified occlusion or stenosis of other precerebral arteries
    BillableMCC249
  43. I63.3
    Cerebral infarction due to thrombosis of cerebral arteries
    Header
  44. I63.30
    Cerebral infarction due to thrombosis of unspecified cerebral artery
    BillableMCC249
  45. I63.31
    Cerebral infarction due to thrombosis of middle cerebral artery
    Header
  46. I63.311
    Cerebral infarction due to thrombosis of right middle cerebral artery
    BillableMCC249
  47. I63.312
    Cerebral infarction due to thrombosis of left middle cerebral artery
    BillableMCC249
  48. I63.313
    Cerebral infarction due to thrombosis of bilateral middle cerebral arteries
    BillableMCC249
  49. I63.319
    Cerebral infarction due to thrombosis of unspecified middle cerebral artery
    BillableMCC249
  50. I63.32
    Cerebral infarction due to thrombosis of anterior cerebral artery
    Header
  51. I63.321
    Cerebral infarction due to thrombosis of right anterior cerebral artery
    BillableMCC249
  52. I63.322
    Cerebral infarction due to thrombosis of left anterior cerebral artery
    BillableMCC249
  53. I63.323
    Cerebral infarction due to thrombosis of bilateral anterior cerebral arteries
    BillableMCC249
  54. I63.329
    Cerebral infarction due to thrombosis of unspecified anterior cerebral artery
    BillableMCC249
  55. I63.33
    Cerebral infarction due to thrombosis of posterior cerebral artery
    Header
  56. I63.331
    Cerebral infarction due to thrombosis of right posterior cerebral artery
    BillableMCC249
  57. I63.332
    Cerebral infarction due to thrombosis of left posterior cerebral artery
    BillableMCC249
  58. I63.333
    Cerebral infarction due to thrombosis of bilateral posterior cerebral arteries
    BillableMCC249
  59. I63.339
    Cerebral infarction due to thrombosis of unspecified posterior cerebral artery
    BillableMCC249
  60. I63.34
    Cerebral infarction due to thrombosis of cerebellar artery
    Header
  61. I63.341
    Cerebral infarction due to thrombosis of right cerebellar artery
    BillableMCC249
  62. I63.342
    Cerebral infarction due to thrombosis of left cerebellar artery
    BillableMCC249
  63. I63.343
    Cerebral infarction due to thrombosis of bilateral cerebellar arteries
    BillableMCC249
  64. I63.349
    Cerebral infarction due to thrombosis of unspecified cerebellar artery
    BillableMCC249
  65. I63.39
    Cerebral infarction due to thrombosis of other cerebral artery
    BillableMCC249
  66. I63.4
    Cerebral infarction due to embolism of cerebral arteries
    Header
  67. I63.40
    Cerebral infarction due to embolism of unspecified cerebral artery
    BillableMCC249
  68. I63.41
    Cerebral infarction due to embolism of middle cerebral artery
    Header
  69. I63.411
    Cerebral infarction due to embolism of right middle cerebral artery
    BillableMCC249
  70. I63.412
    Cerebral infarction due to embolism of left middle cerebral artery
    BillableMCC249
  71. I63.413
    Cerebral infarction due to embolism of bilateral middle cerebral arteries
    BillableMCC249
  72. I63.419
    Cerebral infarction due to embolism of unspecified middle cerebral artery
    BillableMCC249
  73. I63.42
    Cerebral infarction due to embolism of anterior cerebral artery
    Header
  74. I63.421
    Cerebral infarction due to embolism of right anterior cerebral artery
    BillableMCC249
  75. I63.422
    Cerebral infarction due to embolism of left anterior cerebral artery
    BillableMCC249
  76. I63.423
    Cerebral infarction due to embolism of bilateral anterior cerebral arteries
    BillableMCC249
  77. I63.429
    Cerebral infarction due to embolism of unspecified anterior cerebral artery
    BillableMCC249
  78. I63.43
    Cerebral infarction due to embolism of posterior cerebral artery
    Header
  79. I63.431
    Cerebral infarction due to embolism of right posterior cerebral artery
    BillableMCC249
  80. I63.432
    Cerebral infarction due to embolism of left posterior cerebral artery
    BillableMCC249
  81. I63.433
    Cerebral infarction due to embolism of bilateral posterior cerebral arteries
    BillableMCC249
  82. I63.439
    Cerebral infarction due to embolism of unspecified posterior cerebral artery
    BillableMCC249
  83. I63.44
    Cerebral infarction due to embolism of cerebellar artery
    Header
  84. I63.441
    Cerebral infarction due to embolism of right cerebellar artery
    BillableMCC249
  85. I63.442
    Cerebral infarction due to embolism of left cerebellar artery
    BillableMCC249
  86. I63.443
    Cerebral infarction due to embolism of bilateral cerebellar arteries
    BillableMCC249
  87. I63.449
    Cerebral infarction due to embolism of unspecified cerebellar artery
    BillableMCC249
  88. I63.49
    Cerebral infarction due to embolism of other cerebral artery
    BillableMCC249
  89. I63.5
    Cerebral infarction due to unspecified occlusion or stenosis of cerebral arteries
    Header
  90. I63.50
    Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery
    BillableMCC249
  91. I63.51
    Cerebral infarction due to unspecified occlusion or stenosis of middle cerebral artery
    Header
  92. I63.511
    Cerebral infarction due to unspecified occlusion or stenosis of right middle cerebral artery
    BillableMCC249
  93. I63.512
    Cerebral infarction due to unspecified occlusion or stenosis of left middle cerebral artery
    BillableMCC249
  94. I63.513
    Cerebral infarction due to unspecified occlusion or stenosis of bilateral middle cerebral arteries
    BillableMCC249
  95. I63.519
    Cerebral infarction due to unspecified occlusion or stenosis of unspecified middle cerebral artery
    BillableMCC249
  96. I63.52
    Cerebral infarction due to unspecified occlusion or stenosis of anterior cerebral artery
    Header
  97. I63.521
    Cerebral infarction due to unspecified occlusion or stenosis of right anterior cerebral artery
    BillableMCC249
  98. I63.522
    Cerebral infarction due to unspecified occlusion or stenosis of left anterior cerebral artery
    BillableMCC249
  99. I63.523
    Cerebral infarction due to unspecified occlusion or stenosis of bilateral anterior cerebral arteries
    BillableMCC249
  100. I63.529
    Cerebral infarction due to unspecified occlusion or stenosis of unspecified anterior cerebral artery
    BillableMCC249
  101. I63.53
    Cerebral infarction due to unspecified occlusion or stenosis of posterior cerebral artery
    Header
  102. I63.531
    Cerebral infarction due to unspecified occlusion or stenosis of right posterior cerebral artery
    BillableMCC249
  103. I63.532
    Cerebral infarction due to unspecified occlusion or stenosis of left posterior cerebral artery
    BillableMCC249
  104. I63.533
    Cerebral infarction due to unspecified occlusion or stenosis of bilateral posterior cerebral arteries
    BillableMCC249
  105. I63.539
    Cerebral infarction due to unspecified occlusion or stenosis of unspecified posterior cerebral artery
    BillableMCC249
  106. I63.54
    Cerebral infarction due to unspecified occlusion or stenosis of cerebellar artery
    Header
  107. I63.541
    Cerebral infarction due to unspecified occlusion or stenosis of right cerebellar artery
    BillableMCC249
  108. I63.542
    Cerebral infarction due to unspecified occlusion or stenosis of left cerebellar artery
    BillableMCC249
  109. I63.543
    Cerebral infarction due to unspecified occlusion or stenosis of bilateral cerebellar arteries
    BillableMCC249
  110. I63.549
    Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebellar artery
    BillableMCC249
  111. I63.59
    Cerebral infarction due to unspecified occlusion or stenosis of other cerebral artery
    BillableMCC249
  112. I63.6
    Cerebral infarction due to cerebral venous thrombosis, nonpyogenic
    BillableMCC249
  113. I63.8
    Other cerebral infarction
    Header
  114. I63.81
    Other cerebral infarction due to occlusion or stenosis of small artery
    BillableMCC249
    Inclusion terms 1

    Inclusion terms

    • Lacunar infarction
  115. I63.89
    Other cerebral infarction
    BillableMCC249
  116. I63.9
    Cerebral infarction, unspecified
    BillableMCC249
    Inclusion terms 1, Excludes2 1

    Inclusion terms

    • Stroke NOS

    Excludes2

    • transient cerebral ischemic attacks and related syndromes (G45.-) G45

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 I63

Includes

  • occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction

Excludes1

  • neonatal cerebral infarction (P91.82-) P91.82

Excludes2

  • chronic, without residual deficits (sequelae) (Z86.73) Z86.73
  • sequelae of cerebral infarction (I69.3-) I69.3

Use additional code

  • code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82) Z92.82
  • code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-) R29.7

Notes that also apply

Block I60-I69 instructions (Excludes1 1, Use additional code 8): printed on the block page.

Chapter 9 instructions (Excludes2 10): printed on the chapter 9 page.

Index entries

  • PRIND (Prolonged reversible ischemic neurologic deficit) → I63.9
  • RIND (reversible ischemic neurologic deficit) → I63.9
  • Stroke (apoplectic) (brain) (ischemic) (paralytic) → I63.9
  • Hemiplegiathrombotic (current episode) → I63.3-
  • Monoplegiathrombotic (current episode) → I63.3-
  • Paralysis, paralytic (complete) (incomplete)thrombotic (current episode) → I63.3-
  • Quadriplegiathrombotic (current episode) → I63.3-
  • Thrombosis, thrombotic (bland) (multiple) (progressive) (silent) (vessel)apoplexy → I63.3-
  • Hemiplegiaembolic (current episode) → I63.4-
  • Monoplegiaembolic (current episode) → I63.4-
  • Paralysis, paralytic (complete) (incomplete)embolic (current episode) → I63.4-
  • Quadriplegiaembolic (current episode) → I63.4-
  • Infarct, infarctionlacunar → I63.81
  • Accidentcerebrovascular (ischemic) → I63.9
  • Accidentcraniovascular → I63.9
  • Accidentvascular, brain → I63.9
  • Deficitprolonged reversible ischemic neurologic (PRIND) → I63.9
  • Infarct, infarctioncerebral (acute) → I63.9-
  • Stroke (apoplectic) (brain) (ischemic) (paralytic)cerebrovascular (ischemic) → I63.9
  • Stroke (apoplectic) (brain) (ischemic) (paralytic)cryptogenic → I63.9
  • Stroke (apoplectic) (brain) (ischemic) (paralytic)in evolution → I63.9
  • Stroke (apoplectic) (brain) (ischemic) (paralytic)unspecified (NOS) → I63.9
  • Accidentcerebrovascular (ischemic)embolic → I63.-
  • Accidentcerebrovascular (ischemic)thrombotic → I63.-
  • Stroke (apoplectic) (brain) (ischemic) (paralytic)cerebrovascular (ischemic)embolic → I63.-
  • Stroke (apoplectic) (brain) (ischemic) (paralytic)cerebrovascular (ischemic)thrombolic → I63.-
  • Softeningbrain (necrotic) (progressive)thrombotic → I63.3-
  • Softeningbrain (necrotic) (progressive)embolic → I63.4-
  • Occlusion, occludedcerebrovascularwith infarction → I63.5-
  • Softeningbrain (necrotic) (progressive)occlusive → I63.5-
  • Infarct, infarctioncerebral (acute)specified NEC → I63.89
  • Syndromesuperiorcerebellar artery → I63.89
  • Accidentcerebrovascular (ischemic)aborted → I63.9
  • Infarct, infarctioncerebral (acute)aborted → I63.9
  • Infarct, infarctioncerebral (acute)cortical → I63.9
  • Occlusion, occludedarteryprecerebralwith infarction → I63.20
  • Disease, diseasedcerebrovascularacutethrombotic → I63.3-
  • Disease, diseasedcerebrovascularacuteembolic → I63.4-
  • Occlusion, occludedarterybrain or cerebralwith infarction (due to) → I63.5-
  • Occlusion, occludedarterycerebralwith infarction → I63.50

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

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

Hierarchy