ICD-10-CM code · FY2027
I63.5 Cerebral infarction due to unspecified occlusion or stenosis of cerebral arteries
Header codeNot billable: use one of the 18 billable codes below
About I63.5
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Coding notes for I63.5
No notes of its own; the notes below apply from the codes above it.
Also applies, from I63 Cerebral infarction
Includes Conditions this code covers.
- occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction
Excludes1 Not coded here: never report these together with this code (use the code given instead).
- neonatal cerebral infarction (P91.82-)
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
Use additional code Add a second code for the detail named here.
Block I60-I69 notes (apply to every code in it)
Excludes1 Not coded here: never report these together with this code (use the code given instead).
- traumatic intracranial hemorrhage (S06.-)
Use additional code Add a second code for the detail named here.
Chapter 9 notes (apply to every code in it)
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Codes under I63.5 22
- I63.50 Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral arteryBillable
- I63.51 Cerebral infarction due to unspecified occlusion or stenosis of middle cerebral arteryHeader
- I63.511 Cerebral infarction due to unspecified occlusion or stenosis of right middle cerebral arteryBillable
- I63.512 Cerebral infarction due to unspecified occlusion or stenosis of left middle cerebral arteryBillable
- I63.513 Cerebral infarction due to unspecified occlusion or stenosis of bilateral middle cerebral arteriesBillable
- I63.519 Cerebral infarction due to unspecified occlusion or stenosis of unspecified middle cerebral arteryBillable
- I63.52 Cerebral infarction due to unspecified occlusion or stenosis of anterior cerebral arteryHeader
- I63.521 Cerebral infarction due to unspecified occlusion or stenosis of right anterior cerebral arteryBillable
- I63.522 Cerebral infarction due to unspecified occlusion or stenosis of left anterior cerebral arteryBillable
- I63.523 Cerebral infarction due to unspecified occlusion or stenosis of bilateral anterior cerebral arteriesBillable
- I63.529 Cerebral infarction due to unspecified occlusion or stenosis of unspecified anterior cerebral arteryBillable
- I63.53 Cerebral infarction due to unspecified occlusion or stenosis of posterior cerebral arteryHeader
- I63.531 Cerebral infarction due to unspecified occlusion or stenosis of right posterior cerebral arteryBillable
- I63.532 Cerebral infarction due to unspecified occlusion or stenosis of left posterior cerebral arteryBillable
- I63.533 Cerebral infarction due to unspecified occlusion or stenosis of bilateral posterior cerebral arteriesBillable
- I63.539 Cerebral infarction due to unspecified occlusion or stenosis of unspecified posterior cerebral arteryBillable
- I63.54 Cerebral infarction due to unspecified occlusion or stenosis of cerebellar arteryHeader
- I63.541 Cerebral infarction due to unspecified occlusion or stenosis of right cerebellar arteryBillable
- I63.542 Cerebral infarction due to unspecified occlusion or stenosis of left cerebellar arteryBillable
- I63.543 Cerebral infarction due to unspecified occlusion or stenosis of bilateral cerebellar arteriesBillable
- I63.549 Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebellar arteryBillable
- I63.59 Cerebral infarction due to unspecified occlusion or stenosis of other cerebral arteryBillable
Related codes in I63
- I63.0 Cerebral infarction due to thrombosis of precerebral arteriesHeader
- I63.1 Cerebral infarction due to embolism of precerebral arteriesHeader
- I63.2 Cerebral infarction due to unspecified occlusion or stenosis of precerebral arteriesHeader
- I63.3 Cerebral infarction due to thrombosis of cerebral arteriesHeader
- I63.4 Cerebral infarction due to embolism of cerebral arteriesHeader
- I63.6 Cerebral infarction due to cerebral venous thrombosis, nonpyogenicBillable
- I63.8 Other cerebral infarctionHeader
- I63.9 Cerebral infarction, unspecifiedBillable
Latest research on ischemic stroke
- Apixaban (Eliquis) is associated with reduced rates of ischemic stroke and bleeding in patients with atrial fibrillation and advanced chronic kidney disease compared with warfarin (Coumadin)
- Thrombectomy may improve functional independence in acute ischemic stroke with medium vessel occlusion
- Virtual reality rehabilitation is safe and feasible for upper extremity recovery after subacute ischemic stroke
- Functional recovery after maternal ischemic stroke may be commonly favourable
- Prenatal arterial ischemic stroke is associated with pregnancy complications in pregnancies with premature monochorionic twins
Landmark trials from 2MM Classics
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See 2MM+ plansICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.
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