Resources

We want your feedback

X12 welcomes feedback, as well as questions, comments, or suggestions related to its activities and programs. 

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Policies and Procedures

Corporate and Committee level policies and procedures

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Frequently Used Forms

Online forms for requests, suggestions, applications, and more.

Useful Forms
Code Maintenance Request
Request for Interpretation
Maintenance Requests
Member Representative Request for Workspace Access
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Requests for Interpretation

Request clarification related to implementation and use of X12 work.

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Wordbook

Terms and definitions pertinent to X12 that are either specific to X12 or incorporated from other recognized sources,.

Wordbook

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Not sure where to find what you're looking for or what you might need? Please contact us.

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About

Introducing neX12

X12 continues to serve its members and large install base by supporting the existing metadata, standards, and implementation tools while also focusing on several key collaborative initiatives.

Logo for X12 product: Glass

X12's online viewer provides easy and convenient web-based access to many X12 products, both free and subscription-based.

Logo for X12 initiative: Bridge

A new web resource providing a view of X12’s extensive standardized metadata vocabulary in a syntax neutral form.

Logo for X12 initiative: ARC

Annual Release Cycle: X12 has simplified and centralized the submission of maintenance requests for all work products.

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Organization Structure

Led by a diverse Board of Directors that, in collaboration with committee leadership, are responsible for X12's organizational and operational activities and obligations.

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Officers

Board Directors and Committee Leadership

List of Officers
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Committees

The Accredited and Registered Standards Committees

List of Committees
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Liaisons

Representing X12 interests to other organizations

Directory of Liaisons
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Groups and Caucuses

Assembling of members with shared interests

Group Summaries

X12 Awards

Recognizing members and industry representatives with significant contributions and achievements

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Products

X12’s Online Viewer

Online access to all available versions of X12 products, including the EDI Standard, Code Source Directory, Control Standards, EDI Standard Figures, Guidelines and Technical Reports.

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CORE is now part of X12

CORE Operating Rules are now formally part of X12, bringing operating rule development, certification oversight, and standards development under a single organization. By integrating widely adopted business rules with the X12 transaction standards they support, the industry gains a more unified, transparent, and coordinated approach to administrative simplification. This alignment strengthens interoperability, reduces variability across implementations, and ensures that both standards and operating rules evolve together to meet real‑world provider and health plan needs.

More information to come soon….

Licensing Program

Multi-tier licensing categories are based on how licensees benefit from X12's work, replacing traditional one-size-fits-all approaches.

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Commercial Use Partner

Embeds X12 work into a commercial product or service
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Internal Use Partner

Embeds X12 work into an internal product or service
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User

Uses software or service that has X12 work embedded
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Developer

Uses X12 work in a development environment
License Types

Featured Licensing Partners

Use X12's work to create innovative and value-added solutions for internal or commercial use.

Licensing Partners
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External Code Lists

These external code lists, referenced in other X12 work are maintained by X12 and related organizations with all published by WPC on their behalf.

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Technical Reports

X12 produces three types of documents to facilitate consistency across implementations of its work.

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Reference Model

Models business processes, applications, or data flows.
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Implementation Guide

Unique guidance to a specific business purpose.
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Clarification Paper

Describes the use, intentions, or activities related to X12 work.
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Featured Industries

X12 is honored to work with these featured industries who rely on its standards. See all industries.

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Supply Chain

The complementary use of X12 Standards and GS1 Standards enable efficiencies - across the supply chain.

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Rail

The North American railroad industry relies on X12 transactions, exchanging millions of messages each day.

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Defense

X12 transactions have enabled the management and movement of goods for the DoD consistently for decades.

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Intellectual Property (IP) Use

Membership

Who are X12 Members?

Representatives of these members include dedicated technologists and business process experts, meeting regularly to develop and maintain high quality standards in an open consensus environment.

NextGen Healthcare, Inc.
Health Level Seven, Inc.
Defense Logistics Management Standards
Robert M. Miller
National Standards Group (NSG)
John C. Shaffer, AAP
Celigo
Highmark, Inc.
Surescripts, LLC
Conduent
Free Market Health
Independent Health
See All Members

Membership Benefits

Join other member organizations in continuously adapting the expansive vocabulary and language used by millions of organizations while leveraging more than 40 years of cross-industry standards development knowledge.

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X12 Standards Development

Influence change and ensure your interests are represented.
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Meetings, Conferences and Educational Venues

Complimentary registration to X12 Standing Meetings.
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Standards and Publications

Complimentary access to Glass, X12's online viewer.
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Networking and Visibility

Network with decision makers and technology innovators.

Informational Forum for the 270/271, Health Care Eligibility/Benefit Inquiry and Information Response (007030X332) and the Code Value Usage in Eligibility Benefit Inquiry and Subsequent Response (007030X347)

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X12 will conduct an informational forum related to the above technical report

News + Events

Upcoming Meetings

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Winter 2027 Standing

Reno, NV
Onsite: –

Meeting Details
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Summer 2027 Standing

St. Louis, MO
Onsite: –

Meeting Details
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Fall 2027 Standing

Greenville, SC
Onsite: –

Meeting Details
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By ChatGPT 4.0

What's the difference between XML and EDI? XML is what you use when you want to look smart. EDI is what you use when you actually want to get things done!

Important Dates

Oct
19
ASC Ballot: Maintenance Request Package begins  2026-10-19 X12N Subcommittee 14-day Comment Period begins (if needed. Last comment period for inclusion in version 009010)
Oct
25
2026-10-12 X12N 14-day Subcommittee Electronic MR Ballot ends (if needed)
Nov
01
2026-10-19 X12N Subcommittee 14-day Comment Period ends (if needed)
Nov
02
2026-11-02 X12N Subcommittee 14-day Comment Period begins (if needed)
Nov
06
Deadline for submitting code maintenance requests for member review of Batch 141
Nov
09
2026-11-09 X12N 14-day Subcommittee Electronic MR Ballot begins (if needed. Last ballot period for inclusion in version 008080)
Nov
13
Batch 141 member review begins
Nov
15
2026-11-02 X12N Subcommittee 14-day Comment Period ends (if needed)
Nov
16
2026-11-16 X12N Subcommittee 14-day Comment Period begins (if needed)
Nov
18
ASC Ballot: Maintenance Request Package ends
Nov
22
2026-11-09 X12N 14-day Subcommittee Electronic MR Ballot ends (if needed)
Nov
29
2026-11-16 X12N Subcommittee 14-day Comment Period ends (if needed)
Dec
04
Batch 141 member review ends
Dec
07
2026-12-07 X12N Subcommittee 14-day Comment Period begins (if needed)
Dec
14
December Technical Assessment Meeting - 1:30-3:30 PM ET Monday & Tuesday - 1:30-2:30 PM ET Wednesday
See All Important Dates

2019 Award Recipients

X12 is proud and honored to recognize outstanding participants.

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Stacey Barber and Mary Kay McDaniel

Lifetime Achievement Award
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Joel Prater

Bass Achievement Award

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