Ambulatory Surgical Center (ASC) Payment System

This file contains a summary of service utilization by ASC supplier and is derived from 2011 ASC line item level data, updated through June 2012, that is, line items for services furnished on or after January 1, 2011 through December 31, 2011 that were received, processed, paid, and passed to the National Claims History file by June 30, 2012.  This file contains data for ASC services billed in 2011, including services that were added under the revised ASC payment system.  We revised CY 2011 HCPCS codes (where appropriate) to reflect their CY 2012 and CY 2013 payment status and description using an internal CY 2011 to CY 2012 and CY 2012 to CY 2013 crosswalk file.  This file includes 724,096 records summarized first at the supplier level and then at the HCPCS code level. This is a flat file that is available on DVD.

The ASC LDS file will be available twice a year, once for the NPRM in late spring/early summer, and again for the final rule within a month of publication of the OPPS final rule in the Federal Register.

Media: DVD
Cost: $1,600

Data Format: Comma separated variable block (CSV) with SAS® read-in program
Available: Final Rule 2013

To browse the record layout, see the Downloads section below.

Instructions on How to Request LDS Data Files are in the Related Links Inside CMS section below.