This project provides a robust Electronic Data Interchange (EDI) parser and processor specifically designed for healthcare X12 formats. It supports multiple transaction sets including 835 (Payment/Remittance Advice), 999 (Implementation Acknowledgment), 270/271 (Eligibility), 276/277 (Claim Status), 278 (Health Care Services Review), 837P/I/D (Claims), and 820 (Health Insurance Exchange Related Payments).

📊 Current Status: See VALIDATION_REPORT.md for comprehensive testing results and current system validation
📚 Implementation Details: See AmazonQ.md for detailed development history and technical architecture

edi/
├── src/                         # Source code directory
│   ├── edi835/                  # Healthcare Claim Payment/Advice format implementation
│   ├── edi999/                  # Functional Acknowledgment format implementation
│   ├── edi270/                  # Eligibility Benefit Inquiry format implementation
│   ├── edi271/                  # Eligibility Benefit Response format implementation
│   ├── edi276/                  # Health Care Claim Status Request implementation
│   ├── edi277/                  # Health Care Claim Status Response implementation
│   ├── edi278/                  # Health Care Services Review implementation
│   ├── edi837/                  # Health Care Claim implementation (Professional, Institutional, Dental)
│   ├── edi820/                  # Health Insurance Exchange Related Payments implementation
│   ├── helper/                  # Utility functions and shared helpers
│   ├── segments/                # EDI segment definitions and processors
│   ├── error.rs                 # Error handling module
│   ├── transaction_processor.rs # Generic transaction set processor
│   ├── segment_config.rs        # Configuration-driven segment definitions
│   ├── loop_processor.rs        # Enhanced loop detection and processing
│   ├── lib.rs                   # Library exports
│   └── main.rs                  # Application entry point
├── Cargo.toml                   # Rust project configuration and dependencies
└── Cargo.lock                   # Locked dependencies versions

• Multiple Transaction Set Support: 835, 999, 270/271, 276/277, 278, 837P/I/D, 820
• Configuration-Driven Architecture: Segment and loop definitions are configurable
• Robust Error Handling: Comprehensive error types and validation
• Bidirectional Conversion: EDI to JSON and JSON to EDI
• Extensible Design: Easy to add new transaction sets and segments
• Special Format Handling: Support for complex CTX segments and other special formats
• Variant-Specific Components: Specialized handling for format-specific segments like TOO in 837D and CL1 in 837I
• Prefix Support: Handling for special prefixes like AR/HS in UM segments for 278 transaction sets

• Rust toolchain (1.56.0 or later)
• Cargo package manager
• Environment with logging capabilities for debug output

# Clone the repository
git clone [repository-url]
cd edi

# Build the project
cargo build --release

# Run tests
cargo test

-f <file>     Input file path (EDI or JSON)
-o <file>     Output file path
-w            Write mode (convert JSON to EDI)
-j            Specify input is JSON
-h, --help    Show help information

# Convert EDI to JSON
cargo run -- -f input.edi -o output.json

# Convert JSON to EDI
cargo run -- -f input.json -o output.edi -w -j

• Parse EDI files to JSON and verify structure
• Generate EDI files from JSON and verify structure
• Compare original and generated EDI files
• Identify unprocessed segments and structural differences

# Parse EDI to JSON
cargo run -- -f ./demo/edi835-1.edi -o ./demo/test835-new.json

# Generate EDI from JSON
cargo run -- -f ./demo/test835-new.json -o ./demo/test835-new.edi -w -j

# Compare files
diff ./demo/edi835-1.edi ./demo/test835-new.edi

Current System Status & Testing Results

• Comprehensive validation of all implemented formats
• Real-time testing results and system health
• Production readiness assessment
• Quality assurance methodology and findings

Implementation History & Technical Details

• Phase-by-phase development process
• Technical architecture and design decisions
• Detailed segment and loop structures
• Development roadmap and next steps

📋 Status: All items below have been validated through comprehensive testing. See VALIDATION_REPORT.md for current results.

• ✅ Fixed CTX segment implementation in 999 format
• ✅ Improved error handling for malformed input files
• ✅ Addressed Table 1 content placement issues
• ✅ Added comprehensive unit tests
• ✅ Common Infrastructure Updates
  • ✅ Generic transaction set processor
  • ✅ Configuration-driven segment definitions
  • ✅ Enhanced loop detection and processing
  • ✅ Standardized error handling
• ✅ Transaction Set 270/271 (Health Care Eligibility)
• ✅ Transaction Set 276/277 (Health Care Claim Status)
  • ✅ Fixed TRN and STC segment handling in 277 format
• ✅ Transaction Set 278 (Health Care Services Review)
  • ✅ Implemented all loops and segments
  • ✅ Added support for AR/HS prefixes in UM segment
  • ✅ Added facility address handling
  • ✅ Added service provider details
• ✅ Transaction Set 837P/I/D (Health Care Claim)
  • ✅ Implemented variant-specific components
  • ✅ Added specialized handling for TOO segment in 837D
  • ✅ Added specialized handling for CL1 segment in 837I
• ✅ Transaction Set 820 (Health Insurance Exchange Related Payments)
  • ✅ Implemented basic structure and segments
  • ✅ Added parsing and generation functionality

• Implement EDI834 Format
  • Create directory structure and module organization
  • Implement member-level detail segments (INS, HD, DSB)
  • Implement loop structures for enrollment and maintenance
  • Create controller with TransactionSet trait implementation
• Improve Incomplete Implementations
  • Enhance the EDI820 implementation to preserve all segments
  • Improve the EDI837P and EDI837I implementations to preserve all segments
  • Fix segment order issues in generated files
• Code Cleanup
  • Address compiler warnings, particularly unused imports and functions
  • Fix unused variable warnings
  • Improve code organization and documentation
• Performance Optimization
  • Optimize parsing algorithms for better performance with large files
  • Implement caching for frequently used segments
  • Reduce memory usage for large files
• Additional Features
  • Add support for custom delimiters
  • Implement pretty printing for output files
  • Add schema validation
  • Create a web interface for EDI processing

Contributions are welcome! Please feel free to submit a Pull Request.

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