APACHE

**Definition:** An acronym for Acute Physiology and Chronic Health Evaluation, a scoring system using routinely collected data and providing an accurate, objective description for a broad range of intensive care unit admissions, measuring severity of illness in critically ill patients.

**Tree numbers:** - E05.318.308.980.438.475.365 - E05.318.308.980.438.475.456.500.250 - N05.715.360.300.800.438.375.364.500.250 - N06.850.520.308.980.438.475.364.500.250

**Synonyms:** - Acute Physiology and Chronic Health Evaluation