Cerebral infarction/stroke, NOS

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ICD10 Diagnosis
Dx: Cerebral infarction/stroke, NOS
ICD10 code: I63.9
Pre-ICD10 counterpart: Cerebral Infarct Cause NYD
Charlson/ALERT Scale: Cerebrovascular disease
APACHE Como Component: none
APACHE Acute Component: none
Start Date:
Stop Date:
External ICD10 Documentation

This diagnosis is a part of ICD10 collection.

  • SMW
    • 2019-01-01
    • 2999-12-31
    • I63.9
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Additional Info

  • This code is for cerebral ischemia/stroke due to thrombosis of a cerebral artery (not embolic).
  • If the ischemic stroke is embolic (including cardioembolic), use Cerebral infarction/stroke due to embolism.
  • If a stroke is not specified as hemorrhage or infarction, use Stroke, NOS.
  • If the ischemic stroke due to thrombosis spontaneously "transforms" and bleeds, then COMBINE it with the appropriate code for the hemorrhage (see below).
  • If the hemorrhage after an ischemic stroke was NOT spontaneous, but followed anticoagulation, then the hemorrhage should be coded as Hemorrhage, due to anticoagulant or thrombolytic drug as a complication of treatment, not a complication of the stroke per se.

Comorbid Rule exception

Regular comorbid rules exception: Strokes (of any sort, ischemic or hemorrhagic) -- code even resolved strokes with no current sequelae as comorbid diagnoses. If a patient has a past history of stroke, use the regular stroke codes to identify this, even if the patient does not have any residual deficits we will now capture ANY past history of stroke. This is contrary to the usual rules about Comorbid_Diagnosis#When_not_to_code_a_dx_at_all.

Alternate ICD10s to consider coding instead or in addition

Cerebral Hemorrhage/Stroke codes:

Candidate Combined ICD10 codes

Related CCI Codes

Data Integrity Checks (automatic list)

 AppStatus
Query check ICD10 strokeCCMDB.accdbdeclined

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