I63Cerebral infarction

I63 is the ICD-10-CM diagnosis code for cerebral infarction. It belongs to block I60-I69 (cerebrovascular diseases) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: I63.0 (due to thrombosis of precerebral arteries), I63.1 (due to embolism of precerebral arteries), I63.2 (due to unspecified occlusion or stenosis of precerebral arteries), I63.3 (due to thrombosis of cerebral arteries), I63.4 (due to embolism of cerebral arteries), I63.5 (due to unspecified occlusion or stenosis of cerebral arteries), I63.6 (due to cerebral venous thrombosis, nonpyogenic), I63.8 (infarction) and 1 more.

Don't report I63 together with the conditions in its Excludes1 note: neonatal cerebral infarction (P91.82-).

The conditions in its Excludes2 note aren't part of I63, but may be coded alongside it if the patient has both: chronic, without residual deficits (sequelae) (Z86.73) and sequelae of cerebral infarction (I69.3-).

Use an additional code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82). Use an additional code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.