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Rehabilitation Dataset Directory: Dataset Profile


Dataset: National Carrier File (or Physician/Supplier Part B claims file) ()

Basic Information
Dataset full name: National Carrier File (or Physician/Supplier Part B claims file)
Dataset acronym
Summary The National Carrier files contain procedure level claims and billing data for Medicare Part B beneficiaries recieving services from non-institutional health providers. Non-institutional health providers include: physicians, nurse practitioners, occupational and physical therapists, ambulance providers, and stand-alone ambulatory surgical centers. The data contains beneficiary demographic information, primary claim diagnosis, and up to 12 additional diagnoses (ICD9 codes) as well as Health Care Common Procedure Coding System (HCPCS) codes and Current Procedural Technology (CPT) codes. Files also contain provider-level information including unique physician identification number (UPIN), and national provider identifier (NPI). Procedure level details include: date and place of service, provider charges submitted, payments and recipient copayments. Studies often combine the Medicare National Carrier file data with the Medicare Outpatient SAF data to examine outpatient utilization of health services provided by both non-institutional providers and institutional-affiliated providers.
Key Terms Medicare Part B, HCPCS, CPT, non-institutional providers
Study Design Longitudinal
Data Type(s) Administrative
Sponsoring Agency/Entity Department of Health and Human Services (HHS): Centers for Medicare and Medicaid Services (CMS)
Health conditions/Disability measures
Health condition(s) Any/All (ICD-9/10 codes)
Disability Measures NA
Measures/outcomes of interest
Topics Outpatient health-services utilization, outpatient rehabilitation services utilization, Continuity of care, Health Care Common Procedure Coding System (HCPCS), Current Procedural Technology codes (CPT)
Sample
Sample Population Medicare beneficiaries
Sample Size/Notes Medicare beneficiaries enrolled under Medicare part B
Unit of Observation Individual
Geographic Coverage United States
Geographic specificity Beneficiary residence zip code
Data Collection
Data Collection Mode Administrative claims data
Years Collected 1999 - current
Data Collection Frequency Annual
Strengths and limitations
Strengths Very large sample size. Includes health service utilization in outpatient settings provided by non –institutional health providers. Claims for other providers, such as free-standing facilities (e.g. ambulatory surgical centers, and clinical laboratories) are also found in the carrier file. Carrier file data can be linked to other CMS and non-CMS data.
Limitations Data for beneficiaries enrolled in Health Maintenance Organizations (HMOs) not included. Analysis limited to carrier files alone may be limited to study utilization of the services, without looking at outcomes. For certain conditions/procedures (outpatient rehabilitation services), which can be provided at non-institutional or institution-affiliated settings, a combination of outpatient files along with carrier data files is needed.
Data details
Primary Website http://www.resdac.org/cms-data/files/carrier-rif
Data Access http://www.resdac.org/cms-data/files/carrier-rif/data-documentation
Data Access Requirements Data Use agreement, $ Cost
Summary Tables/reports NA
Dataset components (where applicable) NA
Selected papers
Technical Presentation: Using the Carrier File (formerly called the Physician/Supplier Part B File) http://www.resdac.org/sites/resdac.org/files/Using%20the%20Carrier%20File%20%28Slides%29.pdf Presentation Transcript: http://www.resdac.org/sites/resdac.org/files/Using%20the%20Carrier%20File%20%28Transcript%29.pdf
Other Papers Sharma G, Fletcher KE, Zhang D, Kuo YF, Freeman JL, Goodwin JS. Continuity of outpatient and inpatient care by primary care physicians for hospitalized older adults. JAMA. 2009 Apr 22;301(16):1671-80.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2771916/

Gellhorn AC, Chan L, Martin B, Friedly J. Management patterns in acute low back pain: the role of physical therapy. Spine. 2012 Apr 20; 37(9):775-82.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3062937/



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The Rehabilitation Research Cross-dataset Variable Catalog has been developed through the Center for Large Data Research & Data Sharing in Rehabilitation (CLDR). The Center for Large Data Research and Data Sharing in Rehabilitation involves a consortium of investigators from the University of Texas Medical Branch, Cornell University's Yang Tan Institute (YTI), and the University of Michigan. The CLDR is funded by NIH - National Institute of Child Health and Human Development, through the National Center for Medical Rehabilitation Research, the National Institute for Neurological Disorders and Stroke, and the National Institute of Biomedical Imaging and Bioengineering. (P2CHD065702).

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