Healthcare Interoperability Standards: Where Fax Fits in 2026

The Interoperability Overview

Healthcare has long struggled with interoperability. Despite billions invested in health IT, most healthcare organizations still cannot easily exchange information with external partners. This reality explains why fax remains essential.

The Office of the National Coordinator for Health IT (ONC) tracks interoperability progress and consistently finds significant gaps in healthcare data exchange capabilities.

FHIR Progress and Limitations

Fast Healthcare Interoperability Resources (FHIR) is the leading standard for healthcare data exchange. Developed by HL7 International, FHIR uses modern web technologies to enable data sharing.

FHIR Advantages

• Modern RESTful API design
• JSON and XML data formats
• Modular resource-based approach
• Strong industry adoption momentum
• Regulatory support (21st Century Cures Act)

Current Limitations

Despite progress, FHIR adoption faces challenges:

• Incomplete coverage: Not all data types have mature FHIR resources
• Implementation variability: Different vendors implement FHIR differently
• Legacy systems: Many systems cannot support FHIR without upgrades
• Cost: FHIR integration requires significant investment
• Adoption gaps: Small practices often lack FHIR capabilities

The CMS Interoperability and Patient Access Rule mandates FHIR adoption for certain use cases, but full implementation remains years away.

Health Information Exchange Networks

Health Information Exchanges (HIEs) and national networks aim to enable data sharing:

Major Networks

• Carequality: Query-based exchange connecting EHR networks
• CommonWell Health Alliance: National health data sharing network
• DirectTrust: Secure messaging network for healthcare
• Regional HIEs: State and regional exchange networks

Network Limitations

These networks help but do not solve all interoperability challenges:

• Participation is not universal
• Coverage varies by region and organization type
• Data available is often limited to specific categories
• Query-based exchanges require knowing where to look
• Push-based exchanges require recipient participation

According to GAO reports on health IT interoperability, significant barriers remain to achieving true nationwide interoperability.

The Role of Fax Today

Given interoperability gaps, fax serves critical functions:

Universal Reach

Fax works with any recipient, regardless of their technology:

• No shared network membership required
• No technology compatibility requirements
• Works with practices of any size
• Works across state and national boundaries

Handling Edge Cases

Even organizations with advanced interoperability use fax for:

• Partners not on shared networks
• Document types not supported by electronic exchange
• Legal and regulatory requirements for signed documents
• Backup when electronic systems fail

Transition Bridge

Fax bridges the gap during the interoperability transition:

• Allows early adopters to communicate with laggards
• Provides fallback when direct exchange fails
• Supports gradual transition without forcing immediate adoption

The Role of Fax Tomorrow

What happens to fax as interoperability improves? The answer is evolution, not elimination:

Reduced Volume, Continued Need

As FHIR adoption grows, routine exchanges will shift to electronic methods. But fax will remain necessary for:

• Organizations that never adopt modern interoperability
• International communication where standards differ
• Legal documents requiring signatures and attestations
• Disaster recovery and business continuity

Smarter Fax

Modern fax solutions integrate with interoperability efforts:

• AI extraction of data from incoming faxes for EHR integration
• Automatic conversion of fax to FHIR resources where possible
• Intelligent routing based on document content
• Analytics identifying candidates for electronic exchange migration

Hybrid Strategies

Forward-thinking organizations adopt hybrid approaches:

Tiered Communication

• Tier 1: FHIR/API for integrated partners
• Tier 2: Direct secure messaging for participating networks
• Tier 3: Cloud fax for universal reach

Unified Interface

Staff should not need to know which method is used:

• Single interface for sending to any recipient
• System automatically selects best available channel
• Consistent experience regardless of transmission method
• Unified inbox for all incoming communications

Gradual Migration

Monitor and optimize over time:

• Track which partners support electronic exchange
• Identify high-volume fax relationships for migration
• Measure adoption progress and adjust strategy
• Maintain fax capability as a reliable fallback

Conclusion

Healthcare interoperability is improving, but fax remains essential for the foreseeable future:

• FHIR and exchange networks are making progress but are not yet universal
• 56% of referrals still require fax due to interoperability gaps
• Fax provides universal reach that electronic methods cannot yet match
• Hybrid strategies combine modern standards with reliable fax fallback
• Smart fax solutions bridge the gap between fax and structured data

Build a communication strategy that works today and adapts for tomorrow. Get started with Avofax and get reliable fax that integrates with your interoperability journey.