What is a “limited data set”?

A Limited Data Set is health information that excludes these 16 direct identifiers:

  1. Names
  2. Postal address information, other than town or city, state, and ZIP Code
  3. Telephone numbers
  4. Fax numbers
  5. Electronic mail addresses
  6. Social security numbers
  7. Medical record numbers
  8. Health plan beneficiary numbers
  9. Account numbers
  10. Certificate/license numbers
  11. Vehicle identifiers and serial numbers, including license plate numbers
  12. Device identifiers and serial numbers
  13. Web universal resource locators (URLs)
  14. Internet protocol (IP) address numbers
  15. Biometric identifiers, including fingerprints and voiceprints
  16. Full-face photographic images and any comparable images

A Limited Data Set may retain the following information:

  1. Geographic data: town or city, state, and ZIP Code, but no street address 
  2. Dates relating to an individual (e.g., birth date, admission and discharge date)
  3. Other unique identifiers: any unique identifying number, characteristic or code other than those specified in the list of 16 identifiers that are expressly disallowed