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HL7v2 to FHIR R4 mapping in real time
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HL7 FHIR translation
without an integration team

Map HL7v2 messages, FHIR R4 resources, and proprietary Epic or Cerner APIs onto each other in real time through Redox and pre-built connectors, so data flows between standards without a dedicated interface team.

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Adopted by fast-scaling companies moving mission-critical data in real time

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Migrated from Mulesoft
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Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
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Migrated from Fivetran
Case study
Migrated from Celigo
Where healthcare standards stop interoperating

Three reasons HL7 and FHIR refuse to meet.

Every EHR speaks a slightly different dialect of HL7 and FHIR, plus its own proprietary API. Bridging them is exactly the work that swallows integration teams.

01 - Dialect drift

Every Epic interface is a little different

Two sites both run HL7v2, but their ADT segments and Z-segments diverge. Each new endpoint becomes a bespoke mapping project that one engineer ends up owning forever.

SCHEMA
02 - Standard mismatch

FHIR resources don't line up with v2

A partner sends FHIR R4 while your core runs HL7v2. Field-by-field translation between the two is fiddly, and a single dropped identifier breaks the patient match downstream.

DATA QUALITY
03 - Brittle engines

The interface engine is a single point of failure

A hand-built Mirth channel runs unattended until it silently stops. Messages pile up, nobody is alerted, and clinical data quietly stops flowing between systems.

RELIABILITY
PLATFORM

Six products. One Platform.
Replace many legacy vendors.

Every tool Stacksync replaces is one fewer vendor, one fewer bill, one fewer integration to maintain.

Start building now

Two-way sync

Changes made in one platform automatically update across all connected systems in real time, eliminating data silos and reducing errors.

Replaces:
Heroku Connect and Salesforce Data 360
Heroku Connect Salesforce Data 360

Workflow automation

Stop building brittle API scripts. With Stacksync, you can trigger complex automated workflows using simple SQL commands.

Replaces:
Workato and Boomi

AI Agents

Expose every enterprise system to your agents through a single MCP layer. Claude, ChatGPT and Gemini get production-grade tools without custom glue code.

Natively available in:
Claude and ChatGPT and Gemini
Claude ChatGPT Gemini

Event queues

Handle massive traffic spikes without losing a single event. Queues buffer your data during surges, ensuring strict ordering and reliable delivery.

Replaces:
Kafka and Amazon SQS and Confluent
Kafka Amazon SQS

Database hosting

Interact with your CRM, ERP, and payment tools as if they were just another table in your database. Say goodbye to rate limits and complex API documentation.

Replaces:
AWS RDS and Self-hosted databases
AWS RDS Self-hosted databases

EDI

Transform legacy EDI complexity into simple database interactions. Stacksync automatically parses incoming EDI documents directly into your database tables.

Replaces:
SPS Commerce and TrueCommerce
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Connectors

Every standard your data speaks, mapped on one platform.

Stacksync ships pre-built connectors and a visual mapper for HL7v2, FHIR R4, and proprietary EHR APIs, with replay and alerting so translation never silently fails.

EHR APIs
05
  • Epic
  • Cerner
  • athenahealth
  • eClinicalWorks
  • NextGen Healthcare
Standards & engines
05
  • HL7v2
  • FHIR R4
  • Redox
  • Mirth Connect
  • X12
Exchange & messaging
05
  • Salesforce Health Cloud
  • Twilio
  • SendGrid
  • Slack
  • Microsoft 365
Storage & data
05
  • Snowflake
  • BigQuery
  • Postgres
  • MongoDB
  • Oracle DB
Custom Z-segments, FHIR extensions, and proprietary EHR API fields are first-class, no scripting required.
Browse all 1,000+ connectors
SECURITY

Security teams love Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security
SOC 2 type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

Do you map HL7v2 to FHIR R4 both directions?

Yes. The visual mapper translates HL7v2 segments to FHIR R4 resources and back, two-way and in real time, including custom Z-segments and FHIR extensions on either side.

Do we still need an interface engine like Mirth?

No. Stacksync replaces the hand-built engine. Pre-built connectors and the mapper handle the translation, with managed retries and alerting instead of an unmonitored channel.

What happens when a message fails to translate?

It's queued, retried with backoff, and surfaced as an alert, and every message is replayable. Translation never silently stops with messages piling up unseen.

How is translated PHI kept auditable?

Every message and its mapped output are logged with timestamp and route, and each is replayable, so you can prove how any HL7 or FHIR payload was translated and where it went.

Coworkers laughing in front of a laptop in a casual office setting

Stop hand-coding HL7 channels.
Map any standard in real time.

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