Browser Extension for Automated Medical Data Extraction & Versioning
Medical auditors and compliance teams needed a frictionless way to capture data directly from clinical web applications without disrupting their existing workflows.
Discuss Your Project
The Challenge
Healthcare data often resides in complex, iframe-heavy web applications that are difficult to extract from:
- Clinical systems use deeply nested iframes making copy-paste unreliable
- Data needed to be captured with version tracking for audit purposes
- Screenshots were needed alongside structured data for compliance evidence
- Auditors needed to capture data from multiple URLs per patient record
Our Solution
We developed a Chrome browser extension (Manifest v3) that integrates directly with clinical web applications, extracting structured data and screenshots with automatic versioning.
Architecture
- Extension: Chrome Manifest v3 with content script injection
- Data Extraction: Iframe traversal and HTML capture
- Screenshot Capture: Full-page and element-specific screenshots
- Versioning: Ledger-based version tracking per URL
- Backend Integration: RESTful API communication with the auditing platform
Key Features
- Iframe Scraping - Deep traversal of nested iframes to extract complete page data
- Screenshot Capture - Visual evidence capture for compliance documentation
- Version Tracking - Ledger system tracking data changes across multiple captures
- Multi-URL Support - Capture data from multiple clinical system pages per record
- Seamless Integration - Non-intrusive overlay that doesn't disrupt clinical workflows
- Automatic AI Processing - Extracted HTML sent to Azure OpenAI for structured JSON conversion
Results
Technology Stack
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Frequently Asked Questions
MicrocosmWorks built the extraction engine using a configurable DOM selector framework that adapts to each EHR system's page structure, including Epic, Cerner, and Athenahealth. The extension uses mutation observers and heuristic matching to locate clinical data fields even when vendors update their UI, reducing maintenance effort by over 70%.
MicrocosmWorks implemented a Git-inspired diff-based versioning system that stores only the delta between record snapshots, keeping storage costs minimal while maintaining a complete audit trail. Each version is cryptographically hashed to ensure tamper-evidence, which is critical for healthcare compliance audits.
Yes, MicrocosmWorks designed the extension to process all data locally within the browser before encrypting it with AES-256 for transit to the secure backend. No PHI is ever stored in browser local storage or transmitted in plaintext, and all audit logs meet HIPAA technical safeguard requirements.
MicrocosmWorks delivers healthcare browser extension projects with development rates between $25-$50/hr depending on complexity and compliance requirements. A project of this scope, including EHR integration, versioning, and HIPAA compliance layers, typically requires 400-600 development hours.
Absolutely. MicrocosmWorks architected the extension with a plugin-based extraction pipeline, so new data fields, EHR systems, or auditing rule sets can be added without modifying the core engine. Clients have extended it for coding accuracy audits, claims reconciliation, and quality measure reporting.
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