Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
Data for previous years are recalculated for each Annual Data Report from the USRDS data, due to data collection procedures and delay of reporting of some information to the USRDS database. Values displayed are revised accordingly.
Codes used to determine Microalbuminuria testing are taken directly from the Health Plan Employer Data and Information Set (HEDIS) 2002 specification. HEDIS is a set of standardized measures designed to ensure that purchasers and consumers have the information they need to reliably compare the performance of managed Health Care plans. They are CPT codes 82042, 82043, and 82044. CPT (current procedure and terminology) is a listing of descriptive terms and identifying codes for reporting medical services and procedures.
The cohort includes patients enrolled in Medicare before January 1 of each year, alive and remaining in the program through December 31, and who have diabetes diagnosed during the same year. Patients enrolled in an HMO, or with Medicare as secondary payer, or diagnosed with ESRD during the year are excluded. Microalbuminuria testing is tracked in each year. Age is calculated on Dec. 31 of each year.
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