As stated in the paragraphs prior to the list of code combinations, an inpatient admission with a diagnosis of AOD meets criteria for both initiation and engagement. Because NCQA does not specify codes to identify inpatient admissions, inpatient admissions were not included in the list of code combinations. The lists of code combinations include only visits for which value sets exist (outpatient, intensive outpatient and partial hospitalization). Organizations should use their own methods for identifying inpatient admissions when identifying initiation and engagement visits.
HEDIS 2014