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Engineering Insights

FHIR & Healthcare
Interoperability

Deep dives into HL7 FHIR, Smart on FHIR development, EHR integration, and healthcare data exchange from the Akhester engineering team.

7 articles
01
FHIR May 2025 8 min read

Getting Started with FHIR R4: A Developer's Practical Guide

A step-by-step walkthrough of building your first FHIR R4 API — resource modelling, search parameters, RESTful operations, and conformance validation with HAPI FHIR.

02
EHR Integration April 2025 6 min read

Smart on FHIR App Launch: From Sandbox to Epic Production

Lessons learned taking a SMART-launch application through Epic App Orchard review and into a live health system deployment at scale.

03
Cloud & DevOps March 2025 7 min read

HIPAA-Compliant FHIR on AWS: Architecture Patterns

Design patterns for running a FHIR server on AWS with full HIPAA compliance — HealthLake, KMS encryption, CloudTrail, and VPC controls.

04
FHIR Feb 2025 9 min read

CDS Hooks in Practice: Building Real-Time Clinical Alerts

Step-by-step guide to implementing CDS Hooks services that fire at order entry and deliver context-aware guidance inside Epic and Cerner workflows.

05
Compliance Jan 2025 5 min read

ONC HTI-1 Rule: What Healthcare Developers Must Know

A plain-English breakdown of the ONC HTI-1 Final Rule — what changed for TEFCA, FHIR mandates, and how to prepare your health IT products.

06
Open Source Dec 2024 4 min read

Introducing AJFHIR.org: Our Open-Source FHIR Initiative

Why we open-sourced our core FHIR tooling and what it means for the interoperability community. Visit ajfhir.org to explore the platform.

07
EHR Integration Nov 2024 6 min read

Mapping CDA Documents to FHIR: Common Pitfalls & Solutions

Practical patterns for transforming C-CDA clinical documents to FHIR R4 resources — handling extensions, code systems, and data quality edge cases.

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