AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2024 Issue 1; Clarifications

Ischemic Posterior Cerebral Artery Infarction Without Occlusion, Stenosis, Embolism or Thrombosis Clarification

We are seeking clarification of the guidance published in Coding Clinic Second Quarter 2017, page 10, and First Quarter 2022, page 25, regarding the coding of posterior cerebral artery infarction without mention of occlusion, stenosis, embolism, or thrombus. Both cases had a patient with a posterior cerebral artery infarction, with no mention of occlusion, stenosis, embolism, or thrombosis. However, Coding Clinic Second Quarter 2017, advised to assign code I63.532, Cerebral infarction due to unspecified occlusion or stenosis of left posterior cerebral artery, while Coding Clinic First Quarter 2022, advised to assign code I63.89, Other cerebral infarction. What is the correct diagnosis code for posterior cerebral artery infarction without mention of occlusion, stenosis, embolism, or thrombosis? ...

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