Skilled Nursing Facility Medicare Covered Days

SAS Name

This variable is the count of Medicare covered days in the skilled nursing facility (SNF) setting for the year. This variable equals the sum of the CLM_UTLZTN_DAY_CNT variables on the source claims.


We consider fully-covered days, days where the beneficiary was liable for coinsurance, and lifetime reserve days to all be Medicare-covered days. Non-covered days, leave of absence days, and the day of discharge or death are not included.

Medicare payments are described in detail in a series of Medicare Payment Advisory Commission (MedPAC) documents called “Payment Basics” (see:

Also in the Medicare Learning Network (MLN) “Payment System Fact Sheet Series” (see the list of MLN publications at: Publications.html)

Source: CCW (derived)

Null/missing or 1-XXX.