Date that beneficiary first met claims criteria for the chronic kidney disease indicator

SAS Name

This code specifies the first calendar year, month, and day in which the beneficiary met the chronic condition algorithm criteria.  The earliest possible value is 1999MMDD.


The earliest possible date for anyone in the CCW is January 1, 1999. 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 Beneficiary File).

Source: CCW (derived)

ResDAC Comments

From CY 2017 to CY 2021, the MBSF: Chronic Conditions segment also has a newer (CC30) version. The algorithm used to create the First Occurrence of Chronic Kidney Disease variable in the CC30 version includes different DX codes. Different DX codes means that codes were added and removed between versions.