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I63.9

✓ Billable

Cerebral infarction, unspecified

Diseases of the circulatory system (I00-I99)

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Also Known As

Stroke NOS

❌ Excludes1

inherited from I63

Rules from parent category I63: Cerebral infarction

  • • neonatal cerebral infarction (P91.82-)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

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

⚠️ Excludes2

inherited from I63

Rules from parent category I63: Cerebral infarction

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

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Code Information

CodeI63.9
BillableYes
ParentI63
CategoryDiseases of the circulatory system (I00-I99)
Excludes11 rule(s)
Excludes23 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)