AHA Coding Clinic® for ICD-9 - 2009 Issue 4; VOLUMES 1 & 2 NEW/REVISED CODES

Hypoxic-Ischemic Encephalopathy

Effective October 1, 2009, new codes have been created for mild, moderate and severe hypoxic- ischemic encephalopathy (HIE) to distinguish these clinically and radiographically defined variations of HIE. HIE is evidence of acute or subacute brain injury due to asphyxia. HIE is the most common cause of neurologic disease during the neonatal period and is associated with significant mortality and morbidity. The underlying cause of the condition may not always be determined, but there is multi-organ systems involvement following the hypoxic-schemic event. While HIE may occur in utero, moderate and severe HIE are almost always manifested at birth or...

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