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This variable is contained in the following files:
SAS Name
HOP_ER_VISITS
This variable is the count of unique emergency department revenue center dates (as a proxy for an ED visit) in the hospital outpatient data file for the year. Revenue center codes indicating Emergency Room use were (0450, 0451, 0452, 0456, or 0459).
Null/missing or 1-XXX
Note that additional ED revenue centers are found in the inpatient data files – if the ED visit resulted in an IP admission at the same facility.
There are 2 variables that contain counts of ER visits in different settings: this variable and the Inpatient ER (IP_ER_VISITS)
Source: CCW (derived)