Integrated Methods for Interoperable, Predictive, and Secure Digital Health Data Systems
A methodology framework for clinical data interoperability using FHIR R4 canonical profiles, HL7 v2 / C-CDA structural mapping, computable data quality measurement, provenance tracking, and verifiable exchange bundles.
This repository hosts a FHIR R4 Implementation Guide (v1.0) and associated documentation for a multi-line research methodology in digital health data systems:
- Line 1 — FHIR-Native Interoperability: Canonical FHIR R4 profiles, two-phase mapping pipeline (structural + semantic), computable quality metrics, and provenance-verifiable exchange bundles.
- Line 2 — RPM-CDS Framework: Remote Patient Monitoring and Clinical Decision Support methodology.
- Line 3 — Secure HIE Governance: Health Information Exchange governance framework for secure cross-organizational data sharing.
Status: Draft and Experimental — v1.0 public release FHIR Version: R4 (4.0.1) License: Apache-2.0
health-data-systems/
├── index.html # Research platform homepage
├── about/ # About the researcher and research platform
├── css/ # Stylesheets
├── js/ # JavaScript
├── data/ # Artifact data files (inventories, catalogs)
├── line1/ # Line 1: FHIR Interoperability detailed pages
│ ├── artifacts/ # Artifact Explorer
│ ├── mappings/ # HL7 v2 & C-CDA mapping tables
│ ├── quality/ # Quality & Provenance documentation
│ ├── validation/ # Validation dashboard
│ └── originality/ # Prior-art and originality analysis
├── line2/ # Line 2: RPM-CDS methodology
├── line3/ # Line 3: Secure HIE Governance
├── pdf/ # Technical reports and documentation
├── publications/ # Published works
└── technical/ # Technical reference materials
| Category | Count |
|---|---|
| FHIR Resources Generated | 116 |
| StructureDefinitions (Profiles) | 35 |
| Extensions | 11 |
| Logical Models | 9 |
| StructureMaps | 12 |
| ConceptMaps | 11 |
| CodeSystems / ValueSets | 7 / 7 |
| Synthetic Examples | 18 |
All artifacts were compiled using SUSHI (FSH compiler) and validated against the official HL7 FHIR validator.
HL7 v2 / C-CDA / FHIR Inputs
↓
Normalized Source Models
↓
Phase 1: Structural Mapping (StructureMap)
↓
Phase 2: Semantic Reconciliation (ConceptMap)
↓
FHIR Profile Validation
↓
Six Quality Measurements
↓
Provenance + Merkle Root
↓
Canonical Exchange Bundle
| Metric | Description |
|---|---|
| Field Fill Rate | Completeness of required or expected fields |
| Code System Conformance | Coding compliance with required code systems |
| Reference Integrity Rate | Resolvability of FHIR references |
| Temporal Consistency | Logical consistency of temporal data |
| Mapping Success Rate | Successful source-field-to-target mapping ratio |
| Terminology Coverage | Successful terminology normalization rate |
Each exchange bundle includes a complete provenance chain documenting source documents, transformation activities, mapping strategies, and Merkle-root integrity verification.
The research platform is published at: https://xdan-cloud.com
# Coming soon — FHIR IG Publisher output
Technical reports are available in the pdf/ directory:
- FHIR Native Interoperability Technical Report v1.0
- RPM-CDS Technical Report v1.0
- Secure HIE Governance Technical Report v1.0
Validation reports are published alongside the repository, documenting SUSHI compilation, package integrity, and offline FHIR validation results.
This is a draft and experimental release. The methodology and artifacts:
- Have not been deployed in a hospital production environment
- Have not received clinical-safety validation
- Have not undergone independent adopter validation
- Have not achieved official HL7 certification
- Represent the researcher's own methodology development, not institutional work
This project is licensed under the Apache License, Version 2.0 — see the LICENSE file for details (when added).
Xinyang Li — lixinyang87@outlook.com
Research Platform: https://xdan-cloud.com
This repository hosts personal research methodology documentation. It is not affiliated with any employer or academic institution.