AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2022 Issue 1; Ask the Editor

Acute Right Posterior Inferior Cerebral Artery Infarction

A patient presented to the hospital with complaints of dizziness with nausea and vomiting. Magnetic resonance imaging (MRI) of the head demonstrated a large right posterior inferior cerebral artery (PICA) infarction with no evidence of cerebral artery occlusion or high-grade stenosis and PICA origin is patent. Following diagnostic imaging, the provider’s diagnostic statement listed, “Right posterior inferior cerebral artery (PICA) infarction.” What is the appropriate ICD-10-CM code for an acute right PICA infarction when the location of the infarction is identified, without evidence of occlusion, stenosis, embolism or thrombus? ...

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