The CMS 2008 BSA HHA Beneficiary PUF originates from a 5% simple random sample of beneficiaries drawn (without replacement) from the 100% Beneficiary Summary File for reference year 2008. The sample that is used for the CMS 2008 BSA HHA Beneficiary PUF is disjoint from the existing 5% CMS research sample in the sense that there is no overlap in terms of the beneficiaries in the CMS 2008 BSA HHA Beneficiary PUF and the 5% CMS research sample.
This is a Public Use File from Hospice claims drawn from the 2008 Beneficiary Summary File of Medicare beneficiaries enrolled during the calendar year 2008, and their associated Medicare claims. The most important aspects of this file are as follow: 1. 5% simple random sample drawn without replacement from 100% 2008 Beneficiary Summary File. 2. This sample is disjoint from the existing 5% CMS Research Sample and the other 2008 PUFs. 3. Sample contained 2,392,893 unique beneficiaries of which 53,071 had at least one hospice claim.
This is a Public Use File of Inpatient Claims drawn from the 2008 Beneficiary Summary File of Medicare beneficiaries enrolled during the calendar year 2008, and their associated Medicare claims. The most important aspects of this file are as follow: 1. It contains claims for a simple random sample of 5% of the 2008 beneficiary population. Out of approximately 2.4 million beneficiaries in the 5% sample, about 350,000 had claims (after excluding a relatively small fraction of ineligible claims), resulting in a Public Use File of just under 590,000 claims. 2. It contains six (6) analytic variables (in addition to an encrypted claim key): Age, gender, base DRG code, ICD-9 code, claim cost, and length of inpatient stay. All of these variables, except gender, have been suitably aggregated or averaged in order to protect individuals from identification, while retaining the analytic value of the data. 3. A claim for a sampled beneficiary is only included in the PUF if the combination of all six (6) variables is shared by at least eleven (11) claims pertaining to at least eleven (11) distinct beneficiaries in the population (but not necessarily the sample). 4. Claims cannot be linked by beneficiary, and cannot be linked to any external data source by means of the claim ID. The claim ID is a cryptographic key specific to this Inpatient Claims PUF and not available elsewhere. The inpatient Claims PUF is sorted by this claim ID to ensure that the relative position of claims in the PUF and the original source data are totally uncorrelated.
The CMS 2008 BSA SNF Beneficiary PUF originates from a 5% simple random sample of beneficiaries drawn (without replacement) from the 100% Beneficiary Summary File for reference year 2008. The sample that is used for the CMS 2008 BSA SNF Beneficiary PUF is disjoint from the existing 5% CMS research sample in the sense that there is no overlap in terms of the beneficiaries in the CMS 2008 BSA SNF Beneficiary PUF and the 5% CMS research sample.
The 2008 Chronic Conditions PUF is an aggregated file in which each record is a profile or cell defined by the characteristics of Medicare beneficiaries. A profile is defined by all combinations of age category, gender, various chronic conditions, and dual-eligibility status of the beneficiaries. Hence, the number of rows (or records) in the CMS 2008 Chronic Conditions PUF represents the number of unique profiles in the Medicare population. For each profile many claim-related variables are provided in the form of averages. The CMS 2008 Chronic Conditions PUF represents 100% of the Medicare beneficiaries provided in the 100% Beneficiary Summary File for reference year 2008. The 100% Beneficiary Summary File is created annually and contains demographic, entitlement and enrollment data for beneficiaries who were: documented as being alive for some part of the reference year of the Beneficiary Summary File, are entitled to Medicare benefits during the reference year, and enrolled in Medicare Part A and/or Part B for at least one month in the reference year.
The CMS 2010 BSA Carrier Line Items PUF originates from a 5% simple random sample of beneficiaries drawn (without replacement) from the 100% Beneficiary Summary File for reference year 2010.
This release contains the Basic Stand Alone (BSA) Durable Medical Equipment (DME) Line Items Public Use Files (PUF) with information from Medicare DME claims. The CMS BSA DME Line Items PUF is a line item level file in which each record is a line item of a DME claim incurred by a 5% sample of Medicare beneficiaries (each claim is comprised of up to 13 line item services). Some demographic and line item related variables are provided in this PUF. However, as beneficiary identities are not provided, it is not possible to link claims that belong to the same beneficiary in the CMS BSA DME Line Items PUF. It is also not possible to link line item services that belong to the same claim.
The CMS BSA DME Line Items PUF originates from a 5% simple random sample of beneficiaries drawn (without replacement) from the 100% Beneficiary Summary File for the reference year. The sample that is used for the CMS BSA DME Line Items PUF is disjoint from the existing 5% CMS research sample in the sense that there is no overlap in terms of the beneficiaries in the CMS BSA DME Line Items PUF and the 5% CMS research sample. It is also disjoint from the other BSA PUFs that have been released so far. This property prevents users from linking data across multiple files for identification purposes.
The CMS 2010 BSA HHA Beneficiary PUF originates from a 5% simple random sample of beneficiaries drawn (without replacement) from the 100% Beneficiary Summary File for reference year 2010. The sample that is used for the CMS 2010 BSA HHA Beneficiary PUF is disjoint from the existing 5% CMS research sample in the sense that there is no overlap in terms of the beneficiaries in the CMS 2010 BSA HHA Beneficiary PUF and the 5% CMS research sample.
This is a Public Use File from Hospice claims drawn from the 2010 Beneficiary Summary File of Medicare beneficiaries enrolled during the calendar year 2010, and their associated Medicare claims. The most important aspects of this file are as follow: 1. 5% simple random sample drawn without replacement from 100% 2010 Beneficiary Summary File. 2. This sample is disjoint from the existing 5% CMS Research Sample and the other 2010 PUFs.
The CMS 2010 BSA Outpatient Procedures PUF originates from a 5% simple random sample of beneficiaries drawn (without replacement) from the 100% Beneficiary Summary File for reference year 2010.
The CMS 2010 BSA SNF Beneficiary PUF originates from a 5% simple random sample of beneficiaries drawn (without replacement) from the 100% Beneficiary Summary File for reference year 2010. The sample that is used for the CMS 2010 BSA SNF Beneficiary PUF is disjoint from the existing 5% CMS research sample in the sense that there is no overlap in terms of the beneficiaries in the CMS 2010 BSA SNF Beneficiary PUF and the 5% CMS research sample.
The 2010 Chronic Conditions PUF is an aggregated file in which each record is a profile or cell defined by the characteristics of Medicare beneficiaries. A profile is defined by all combinations of age category, gender, various chronic conditions, and dual-eligibility status of the beneficiaries. Hence, the number of rows (or records) in the CMS 2008 Chronic Conditions PUF represents the number of unique profiles in the Medicare population. For each profile many claim-related variables are provided in the form of averages.
The CMS 2008 Chronic Conditions PUF represents 100% of the Medicare beneficiaries provided in the 100% Beneficiary Summary File for reference year 2008. The 100% Beneficiary Summary File is created annually and contains demographic, entitlement and enrollment data for beneficiaries who were: documented as being alive for some part of the reference year of the Beneficiary Summary File, are entitled to Medicare benefits during the reference year, and enrolled in Medicare Part A and/or Part B for at least one month in the reference year.
The dataset includes detailed information on Medicare Fee-For-Service (FFS) claims that underwent CERT medical review for the FY 2011-2017 report periods (claims submitted January 1, 2010 through June 30, 2016.) These claims were used to calculate the FY 2011-2017 Medicare FFS improper payment rates. The 2011-2017 dataset column headers include: Part, what was billed (i.e., HCPCS Procedure Code, Type of Bill, or DRG), Provider Type, Error Code, and Review Decision.
