Terminology owner/maintenance organisation

Name, contact details, website

3M Health Information Systems, Inc.
575 West Murray Boulevard
Salt Lake City, UT 84123, USA

Website: http://www.3mhis.com

Phone: +1 800 367 2447

Formal name of the code system

All Patient Diagnosis Related Groups (AP DRGs)

Short name or abbreviation of the code system name

Technical identifier/s for the code system 

Canonical URL: http://uri.hddaccess.com/cs/apdrg

Scope/domain statement for the code system

(Official or from HTA)

"In 1987, the state of New York passed legislation instituting a DRG-based prospective payment
system for all non-Medicare patients. The legislation included a requirement that the New York
State Department of Health (NYDH) evaluate the applicability of the DRGs to a non-Medicare
population. In particular, the legislation required that the DRGs be evaluated with respect to neonates and patients with Human Immunodeficiency Virus (HIV) infections. NYDH entered into an agreement with 3M HIS to assist with the evaluation of the need for DRG modifications as well as to make the necessary changes in the DRG definitions and software. The DRG definitions developed by NYDH and 3M HIS are referred to as the All Patient DRGs (AP DRGs). 

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

The AP DRG code system is no longer updated as DRG classification system evolved to APR DRG. Evolution of DRG is summarized in the APR DRG methodology overview as well as in various articles.
Goldfield N. The evolution of diagnosis-related groups (DRGs): from its beginnings in case-mix and resource use theory, to its implementation for payment and now for its current utilization for quality within and outside the hospital. Qual Manage Health Care. 2010;19(1)3-16.
Averill RF, Goldfield NI, Muldoon J, Steinbeck BA, Grant TM. A closer look at All-Patient Refined DRGs. J AHIMA. 2002;73(1):46-49.


Arrangement or agreements with HL7 for use of content

Version management - timing and identification of versions

"The initial release of the AP DRGs consisted of the additions of Major Diagnostic Categories
(MDC) 24 and the restructuring of the newborn MDC. For the purpose of consistency with the CMS DRGs, the initial AP DRGs were
referred to as Version 5.0 and were effective in New York state beginning on January 1, 1988.
Since the initial release, the AP DRGs have been updated every one to two years"

IP Information and Licensing Information

AP DRG was a licensed product of 3M. Licensing is required for it's use.

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

Financial Management Work Group

Process to request content change


Other useful Information


Information current as at (date)

20201112 - Approved for Production Use
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  1. Jessica Bota Please start the UTG process to add this to THO

    1. UTG ticket/content submitted here:  UP-141 - Getting issue details... STATUS

      Senthil Nachimuthu , we used 'APDRG' for the short name as no spaces are permitted in this value which is also used for the id in this process.