Public Use Files

Fast Track Processes Public Use Files

National Beneficiary Service (NBS) Public Use Files
Disability Analysis File (DAF) Public Use File

Contact Information
For additional information, e-mail

The Fast Track Process Public Use Files

We are committed to providing benefits quickly to claimants whose medical conditions are so serious that they clearly meet our disability standards. Our two fast-track processes, Quick Disability Determinations (QDD) and Compassionate Allowances (CAL), use technology to identify claimants with the most severe disabilities and allow us to expedite our decisions on those cases while maintaining accuracy. These initiatives have been two of our greatest successes in recent years. We can approve some cases in a matter of days instead of months.

The QDD process uses a computer-based predictive model to screen initial applications to identify cases where a favorable disability determination is highly likely and medical evidence is readily available. By identifying QDD claims early in the process, we can prioritize this workload and expedite case processing. We have used QDD nationally since February 2008. We continue to refine the QDD predictive model to reflect the characteristics of the recent applicant population and optimize its ability to identify strong candidates for expedited processing. For more information about the QDD process, see the Quick Disability Determinations homepage.

The CAL process is a way to quickly identify diseases and other medical conditions that by definition, meet our standards for disability benefits. These conditions primarily include certain cancers, adult brain disorders, and a number of rare disorders that affect children. The CAL initiative helps us reduce waiting time to reach a disability determination for individuals with the most serious disabilities. The CAL process identifies claims where the applicant’s disease or condition clearly meets the statutory standard for disability. By incorporating cutting-edge technology, we can easily identify potential Compassionate Allowances to quickly make decisions. We use the same rules to evaluate CAL conditions when evaluating both Social Security Disability Insurance and Supplemental Security Income programs. For more information about the CAL process, see the Compassionate Allowances homepage.


Fast-tracked cases consist of those cases identified as Quick Disability Determination (QDD), Compassionate Allowance (CAL), or both. A case can include one or more claims filed by an individual.

The datasets provide, by state, the total number and percentage of initial disability fast-track and electronic cases that were received and accepted by the Disability Determination Services (DDS), Extended Service Team (EST), or a federal site beginning with fiscal year (FY) 2010. 

The datasets are updated and reported annually based on the fiscal year. The fiscal year ends on the last Friday of September. For example, FY 2010 represents the reporting periods of September 26, 2009 through September 24, 2010. A reporting month runs from the last Saturday of the month through the last Friday of the following month.

Data Collection Description

The datasets represent the agency's programmatic disability data used to administer the disability process and are published in official agency reports.

Technical Documentation

We provide the datasets for FY 2010 through 2022 in an excel spreadsheet (.xls) and a comma-separated values (.csv) file. The data are summarized at the state level, sorted in ascending order by state, and include the following categories:

  • State (Column A)
  • State Abbreviation (Column B)
  • Region (Column C)
  • Total Fast-Track Receipts (Column D)
  • Total DDS Electronic Receipts (Column E)
  • % of Fast-Track Receipts (Column F)

Data Dictionary

Dataset Column Name





The state in which the Disability Determination Services (DDS), Extended Service Team (EST)1, or federal office resides.

State Abbreviation


The universal abbreviation code for the state.



The regional location for the DDS, EST1, or federal office that received and accepted the initial disability case after case transfer from the field office.

Total Fast-Track


The total number of initial disability cases identified as fast-track that were received and accepted by the DDS, EST1, or federal site after case transfer from the field office within the fiscal year. Fast-tracked cases consist of those cases identified as Quick Disability Determination (QDD), Compassionate Allowance (CAL), or both.

Total DDS Electronic


The total number of DDS electronic receipts that were received and accepted by the DDS, EST1, or federal site after case transfer from the field office within the fiscal year.

% of Fast-Track Receipts


The total number of fast-track receipts divided by the total DDS electronic receipts, expressed as a percent. The percentage includes one decimal position. (Note: The value was calculated to the hundred-thousandths place, multiplied by 100 to express a percent, and rounded to the tenths place.)


(Total Line)

The total number of fast-track receipts, DDS electronic receipts, and percentage of fast-track receipts for the nation within the FY.

1Extended Service Teams (ESTs) provide national case processing assistance to states most adversely affected by an increase in initial disability cases.

Data Files

The following data file is in excel (.xls) format.
Percent of Fast-Track Receipts for FY 2010-2022

The following data file is in comma-separated values (.csv) format.
Percent of Fast-Track Receipts for FY 2010-2022

The National Beneficiary Survey (NBS) Public Use Files

For more general information about the National Beneficiary Survey (NBS), please continue to the NBS page.

To protect the anonymity of NBS respondents while providing accurate and detailed data, we present the NBS data in two formats: a Restricted Use File available only to users approved by SSA and for use on specific research projects, and a Public Use File released by SSA for the general public to use in various statistical analyses. These two files offer differing degrees of accessibility to confidential information. For both data files, we have removed any information that could directly or indirectly identify a respondent; this information includes respondents’ names, Social Security numbers, and addresses. Because of its more widespread availability, the Public Use File has undergone extensive masking and has fewer available variables than the Restricted Use File. Even with the variables masked, however, the NBS Public Use File offers a wide variety of pertinent variables and topics for the general public to use.

In order to minimize the likelihood of indirect identification of a sample member, we deleted variables that could identify residents of smaller geographic areas or sample members possessing rare attributes (outliers). We also simplified the file by dropping variables with little analytic value. These included survey administration variables, source variables that had corresponding imputed versions, imputation flags, source variables summarized in a constructed variable, and constructed variables that we had not utilized in the round’s analyses. We also dropped data elements with quality problems that would reduce their analytic value, as well as agency administrative data appended to the Restricted Access File. In their place, we masked select key administrative variables and added them to the file as new constructs.

Using the Office of Research, Demonstration, and Employment Security (ORDES) Disclosure Checklist for the Public Release of Data, we developed encryption/masking algorithms that would maximize the analytic value of the data while maintaining acceptable confidentiality for the program participants. The ORDES Disclosure Review Board has approved the Public Use Files for release.

The Public Use Files are only available for the Representative Beneficiary Samples for rounds 1 - 5. The Ticket Participant Samples are not available for public use. A relatively small proportion of our beneficiaries participated in the Ticket to Work program, and, as a result, the sampling rate for the Ticket Participant Samples was quite high. For this reason, our Disclosure Review Board believes releasing the participant sample would pose an unacceptable risk of disclosure for this portion of the NBS survey participants. The successful worker samples for the 2017 (R6) and 2019 (R7) NBS are part of the NBS 2017 and 2019 PUF files.

Please visit the links below for technical details on each round, the documentation, and the public use files.

Round 1 Documentation and Public Use Files
Round 2 Documentation and Public Use Files
Round 3 Documentation and Public Use Files
Round 4 Documentation and Public Use Files
Round 5 Documentation and Public Use Files
Round 6 Documentation and Public Use Files
Round 7 Documentation and Public Use Files

Disability Analysis File (DAF) Public Use File

The Disability Analysis File (DAF) is an analytical file consisting of agency administrative data in an easy-to-use format. We create a new version of the file and documentation each year. The file contains historical, longitudinal, and one-time data on all beneficiaries with disabilities who participated in the Supplemental Security Income (SSI) or Social Security Disability Insurance (SSDI) programs at any time between 1996 and the year of the file. Each DAF is an updated version of all prior DAF files, so users should use the most recent file available.

The DAF PUF contains a random 10 percent sample of beneficiaries included in the full DAF. The 10 percent file is large enough to avoid disclosure risk and small enough to keep the file size manageable. The PUF contains a more limited set of variables than the full DAF, and we masked some variables in a variety of ways to avoid disclosure. Please consult the DAF-PUF20 Overview and Documentation for additional details on the DAF variables.

Note: The current version of the DAF PUF is the DAF20 PUF, with data through the end of 2020.

To access the DAF PUF documentation and data files, please visit the DAF PUF webpage.

Back to Top