Terminology owner/maintenance organisation

Name, contact details, website

American Hospital Association (AHA)

155 North Wacker Drive, Suite 400
Chicago, IL 60606
Phone: 312-422-3000
Fax: 312-422-4500

Formal name of the code system

National Uniform Billing Committee (NUBC) Uniform Billing (UB-04)

Short name or abbreviation of the code system name

See subpages for specific code system information by data element of the UB-04 data file 
Technical identifier/s for the code system 

See subpages for specific code system information by data element of the UB-04 data file 

Canonical URL: 

Scope/domain statement for the code system

(Official or from HTA)

The UB-04 Data File contains the complete set of NUBC codes. Every code in the range of possible codes is accounted for sequentially. There are no gaps because all used and unused codes are identified.

The file consists of an Excel workbook containing 14 worksheets sorted by data element (Form Locator (FL)):

  • FL 04 - Type of Bill Facility Codes
  • FL 04 - Type of Bill Frequency Codes
  • FL 13 - Admission Hour
  • FL 14 - Priority (Type) of Admission or Visit
  • FL 15 - Point of Origin for Admission or Visit (includes Newborn and Non-newborn)
  • FL 16 - Discharge Hour
  • FL 17 - Patient Discharge Status
  • FL 18-28 - Condition Codes
  • FL 31-34 - Occurrence Codes and Dates
  • FL 35-36 - Occurrence Span Codes and Dates
  • FL 39-41 - Value Codes and Amounts
  • FL 42 - Revenue Codes
  • FL 66 - Diagnosis and Procedure Code Qualifier (ICD Version Indicator)
  • FL 81 - Code-Code Field (for paper UB-04s only)

Link to information about the code system - including how to obtain the content

To obtain the underlying code systems, please see information here

Arrangement or agreements with HL7 for use of content

Statement of Understanding between AHA and HL7 can be found here. In particular see sections 4.1d and 4.2.
Version management - timing and identification of versions

"The UB-04 Manual has a 12-month subscription period from June 30 through July 1. "

At time of publication of this HTA page, the 2021 edition became available on July 1, 2020.

IP Information and Licensing Information

Licensing information can be found here

The codes referred to within the NUBC code systems are copyrighted by the American Hospital Association, is the only official source of UB-04 billing information adopted by the National Uniform Billing Committee. No other publication—governmental or private/commercial—can be considered authoritative. The AHA wants to make you aware that the use of codes, descriptions, or any other content contained in the manual to be used in a software application, publication, or any other derivative work must be properly licensed by the AHA. If your organization uses or intends to use any of the codes or other related content from the manual in this manner, please contact the AHA’s licensing manager.

Contact information current as of publication here:

Tim Carlson
Phone: 312.893.6816
Email: tcarlson@aha.org

HL7 users of this information - which HL7 products use this link (if known)

Financial Management Work Group

Process to request content change

National Uniform Billing Committee Data Element Specifications Change Request Guidelines

"The National Uniform Billing Committee (NUBC) holds meetings and conference calls throughout the year and change requests to the UB-04 Manual or UB-04 Data Set may be submitted at any time. To be considered at the next scheduled meeting, requests for changes must be received by the NUBC Secretary at least 45 days in advance. Approved changes are usually effective as of July 1 or about 90 days after approval, as appropriate."

For more information and to submit a change request, please see here

Other useful Information

For frequently asked questions, see here

Information current as at (date)

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