Anesthesia Events

SAS Name

This variable is the count of events for part B anesthesia services (ANES) for a given year. An event is defined as each line item that contains the relevant service.

ANES claims are a subset of the claims, and a subset of procedures in the Part B Carrier data file. ANES claims are defined as those with a line BETOS code (BETOS_CD) where the first 2 digits = “P0” and the CARR_LINE_MTUS_CD='2'.


There are 11 cost/use categories from the Carrier Part B and DME data files – the ASC, Anesthesia, Part B Drug, Physician, E &M, dialysis, imaging, tests, other procedures, DME and other carrier claims.

Source: CCW (derived)

Null/missing or 1-XXX