ICD-10-CM diagnosis code
I63.50 Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery
- Billable
- Yes, a complete code (FY2026)
- Category
- I63 Cerebral infarction
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Other codes in I63
91 complete codes in this category.
- I63.439Cerebral infarction due to embolism of unspecified posterior cerebral artery
- I63.441Cerebral infarction due to embolism of right cerebellar artery
- I63.442Cerebral infarction due to embolism of left cerebellar artery
- I63.443Cerebral infarction due to embolism of bilateral cerebellar arteries
- I63.449Cerebral infarction due to embolism of unspecified cerebellar artery
- I63.49Cerebral infarction due to embolism of other cerebral artery
- I63.50Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery
- I63.511Cerebral infarction due to unspecified occlusion or stenosis of right middle cerebral artery
- I63.512Cerebral infarction due to unspecified occlusion or stenosis of left middle cerebral artery
- I63.513Cerebral infarction due to unspecified occlusion or stenosis of bilateral middle cerebral arteries
- I63.519Cerebral infarction due to unspecified occlusion or stenosis of unspecified middle cerebral artery
- I63.521Cerebral infarction due to unspecified occlusion or stenosis of right anterior cerebral artery
Documentation tips
- Make sure the note supports every element of the title, “Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to I63.
The international WHO ICD-10 also has I63, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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