ICD-10 code for stroke

The ICD-10-CM code for stroke is I63.9 (Cerebral infarction, unspecified). The official index lists 90 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I63.9.

It is also searched as CVA, cerebrovascular accident.

Within I63, choose I63.9 (unspecified) only when documentation doesn't support a more specific option: due to thrombosis of precerebral arteries (I63.0), due to embolism of precerebral arteries (I63.1), due to unspecified occlusion or stenosis of precerebral arteries (I63.2), due to thrombosis of cerebral arteries (I63.3), due to embolism of cerebral arteries (I63.4), due to unspecified occlusion or stenosis of cerebral arteries (I63.5), due to cerebral venous thrombosis, nonpyogenic (I63.6) and other cerebral infarction (I63.8).

The conditions in its Excludes2 note aren't part of I63.9, but may be coded alongside it if the patient has both: transient cerebral ischemic attacks and related syndromes (G45.-).

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-).