ICD-9-CM diagnosis code (retired)
433.01 — Occlusion and stenosis of basilar artery with cerebral infarction
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 433.01
433.01 is an ICD-9-CM diagnosis code for occlusion and stenosis of basilar artery with cerebral infarction. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, I63.22 (Cerebral infarction due to unspecified occlusion or stenosis of basilar artery). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- I63.22Cerebral infarction due to unspecified occlusion or stenosis of basilar arteryapproximate
Common questions about 433.01
What is the ICD-10 code for ICD-9 433.01?
- The GEMs map 433.01 to ICD-10-CM I63.22.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.