New CMS Final Rule Modernizes Health Care Claims With Electronic Documentation Submissions

With a new final rule, CMS is replacing faxing and mailing with streamlined electronic transactions, allowing providers to spend more time caring for patients and less on administrative work, the agency announced last Friday.¹

Manual Processes Create Administrative Burden

The final rule, titled “The Administrative Simplification; Adoption of Standards for Health Care Claims Attachments Transactions and Electronic Signatures Final Rule,” establishes national standards for the electronic exchange of clinical documentation used to support health care claims and is projected to save the health care industry $781.98 million annually. It also adopts standards for electronic signatures to ensure secure, authenticated information transmission in compliance with federal regulations.

Providers have historically relied on manual methods, such as fax or mail, to submit additional documentation required by health plans for claims adjudication. These outdated practices have contributed to delays and administrative burden for both providers and payers. By standardizing how supporting documentation is submitted, the rule is expected to reduce claim delays and improve reimbursement timelines.

The proposed rule, issued in December 2022, included standards for both health care claims and prior authorization attachments, but the final rule focuses only on attachments for health care claims.² In the meantime, HHS will continue to evaluate alternative standards currently being tested by the industry.

CMS said the new standards will modernize workflows by creating a consistent, user-friendly electronic framework for submitting health care claims attachments, improving administrative efficiency across the health care system.¹

It also aligns with multiple points on CMS’ Center for Clinical Standards and Quality (CCSQ) roadmap, spanning fiscal years 2025 through 2028.³ As announced earlier this month, the initiative aims to improve health care outcomes and strengthen accountability across the nation’s health care and long-term care systems.

The rule supports CCSQ goals to reduce administrative burden and leverage data and technology, streamlining processes with digital tools to move data faster. As a result, providers can focus more on patients and less on paperwork.

“The 1980s called, and they want their fax machines back,” CMS Administrator Mehmet Oz, MD, MBA, said in a news release.¹ “The futuristic medical breakthroughs we’ve achieved, like augmented reality glasses that give surgeons X-ray vision, shouldn’t have to coexist with administrative systems that often lag decades behind.”

Adopted Standards and Technical Framework

The rule adopts Version 6020 of the X12N 275 and X12N 277 standards for health care claims attachment transactions.² It also incorporates Health Level 7 (HL7) Implementation Guides (IGs) to support clinical data integration, including the HL7 Consolidated Clinical Document Architecture IG Volumes 1 and 2 and the HL7 Attachments IG.

CMS added that the final rule was developed in collaboration with industry stakeholders to ensure practical, effective implementation. The adopted standards apply to all entities covered under the Health Insurance Portability and Accountability Act, including health care providers, health plans and payers, patients and consumers, clearinghouses, and technology vendors.

Implementation Timeline and Patient Impact

The final rule takes effect May 26, 2026, giving providers and payers just over 2 months to prepare. Compliance with all requirements is set for May 26, 2028, or 24 months from the effective date.

“This new rule will modernize American health care by standardizing electronic claims attachments and enabling secure electronic signatures,” Oz said.¹ “Because every minute providers save on paperwork is another minute they can spend caring for patients.”

References

1. CMS rule phases out fax machines, snail mail to save taxpayers $781.98 million a year. News release. CMS. March 20, 2026. Accessed March 23, 2026. https://www.cms.gov/newsroom/press-releases/cms-rule-phases-out-fax-machines-snail-mail-save-taxpayers-781-98-million-year
2. Administrative Simplification; Adoption of Standards for Health Care Claims Attachments Transactions and Electronic Signatures Final Rule CMS-0053-F. CMS. March 20, 2026. Accessed March 23, 2026. https://www.cms.gov/newsroom/fact-sheets/administrative-simplification-adoption-standards-health-care-claims-attachments-transactions
3. Optimal health for all within nation’s health and long-term care systems: CCSQ FY2025-2028 strategic roadmap. News release. CMS. March 11, 2026. Accessed March 23, 2026. https://www.cms.gov/newsroom/blog/optimal-health-all-within-nations-health-long-term-care-systems-ccsq-fy2025-2028-strategic-roadmap