Date that beneficiary first met claims criteria for the ischemic heart disease indicator

SAS Name
ISCHEMICHEART_EVER

This variable shows the date when the beneficiary first met the criteria for the Chronic Conditions Warehouse (CCW) ischemic heart disease (IHD) indicator. The variable will be blank for beneficiaries that have never had the condition.

Comments

The earliest possible date for this variable is January 1, 2016, since the algorithm for this condition requires ICD-10 diagnosis codes within the specified lookback period. If the beneficiary became eligible for Medicare after that, the earliest possible date will be some time after his/her coverage start date (i.e., the COVSTART variable in the Master Beneficiary Summary File [MBSF]).

Source: CCW (derived)

ResDAC Comments

From CY 2017 to CY 2021, the MBSF: Chronic Conditions segment also has a previous (CC27) version. The algorithm used to create the First Occurrence of Ischemic Heart Disease variable in the CC27 version includes fewer DX codes and a reduced claim requirement.