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Free Medical Coding > ICD10 CM > 2025 ICD-10-CM Codes > 2025 ICD-10-CM Codes I00-I99 – Diseases of the circulatory system (I00-I99) > 2025 ICD-10-CM Codes I60-I69 – Cerebrovascular diseases (I60-I69) > 2025 ICD-10-CM Codes I63 – Cerebral infarction (I63) > 2025 ICD-10-CM Diagnosis Code I63.9 – Cerebral infarction, unspecified (I63.9)

2025 ICD-10-CM Diagnosis Code I63.9 – Cerebral infarction, unspecified (I63.9)

2016201720182019202020212022202320242025Billable/Specific Code
  • I63.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM I63.9 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of I63.9 – other international versions of ICD-10 I63.9 may differ.

ICD-10-CM I63.9 is grouped within Diagnostic Related Group(s):

  • 023 Craniotomy with major device implant or acute complex cns principal diagnosis with mcc or chemotherapy implant or epilepsy with neurostimulator
  • 024 Craniotomy with major device implant or acute complex cns principal diagnosis without mcc
  • 061 Ischemic stroke, precerebral occlusion or transient ischemia with thrombolytic agent with mcc
  • 062 Ischemic stroke, precerebral occlusion or transient ischemia with thrombolytic agent with cc
  • 063 Ischemic stroke, precerebral occlusion or transient ischemia with thrombolytic agent without cc/mcc
  • 064 Intracranial hemorrhage or cerebral infarction with mcc
  • 065 Intracranial hemorrhage or cerebral infarction with cc or tpa in 24 hours
  • 066 Intracranial hemorrhage or cerebral infarction without cc/mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Applicable To

  • Stroke NOS

Type 2 Excludes

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

Code History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2016 (effective 10/1/2015): No change
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I63.9:

  • cerebral > Accident
  • cerebrovascular (embolic) (ischemic) (thrombotic) > Accident
  • aborted > cerebrovascular (embolic) (ischemic) (thrombotic) I63.9
  • craniovascular > Accident
  • vascular, brain > Accident
  • ischemic > neurologic NEC R29.818
  • reversible (RIND) > ischemic I63.9
  • prolonged (PRIND) > reversible (RIND) I63.9
  • prolonged reversible ischemic neurologic (PRIND) > Deficit
  • aborted > cerebral (acute) (chronic) I63.9-
  • cortical > cerebral (acute) (chronic) I63.9-
  • cryptogenic > Stroke (apoplectic) (brain) (embolic) (ischemic) (paralytic) (thrombotic) I63.9
  • in evolution > Stroke (apoplectic) (brain) (embolic) (ischemic) (paralytic) (thrombotic) I63.9
  • unspecified (NOS) > Stroke (apoplectic) (brain) (embolic) (ischemic) (paralytic) (thrombotic) I63.9

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