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Upload Your First File
Ready to see EDI Paisan in action? This guide walks you through uploading your first file and understanding what you're looking at.
Before You Start
All you need:
- A web browser (Chrome, Firefox, Safari, or Edge)
- An EDI file to explore (837, 835, 270, or 271)
No installation. No file uploads to servers. Just create a free account and start exploring.
🔒 Privacy First: Your file never leaves your browser. EDI Paisan processes everything locally using WebAssembly — your PHI stays on your machine.
Step 1: Open EDI Paisan
Navigate to app.edipaisan.com in your browser.
You'll see the upload interface — a clean area inviting you to add a file.
Step 2: Upload Your File
You have two options:
Drag and Drop
Simply drag your EDI file from your file manager and drop it onto the upload area.
Click to Browse
Click the upload area to open your system's file picker, then select your file.
Accepted file types:
| Extension | Description |
|---|---|
.edi | Standard EDI file |
.txt | Plain text containing EDI data |
.x12 | X12 format files |
.837, .835, .834 | Transaction-specific extensions |
.270, .271, .276, .277, .278 | Eligibility and status extensions |
.csv | Flat file for 837P generation |
File size limit: 100MB per file (plenty for even large batch files)
Step 3: Watch the Magic Happen
Once you drop your file, EDI Paisan instantly parses it. For most files, this takes less than a second.
What happens behind the scenes:
- The parser reads your file's delimiters from the ISA segment
- It validates the structure (interchange → functional group → transaction)
- It builds a navigable tree from all segments
- Element descriptions are loaded from the appropriate implementation guide
Step 4: Meet the Interface
After parsing, you'll see your file displayed in a structured view:
The File Tree (Left Panel)
Your EDI file is now a navigable hierarchy:
📁 Interchange (ISA)
└── 📁 Functional Group (GS)
└── 📁 Transaction Set (ST)
├── 📄 Claim 1
├── 📄 Claim 2
└── 📄 Claim 3...- Click any node to expand it
- Segments appear as you drill down
- Claims/Transactions are grouped logically
The Detail Panel (Right Side)
When you select a segment, this panel shows:
- The raw segment data
- A breakdown of each element with descriptions
- Qualifier code meanings (where applicable)
Step 5: Navigate Your File
Expanding the Tree
Click the arrows (▶) next to any node to expand or collapse it:
- ISA/IEA = Interchange envelope (the outermost wrapper)
- GS/GE = Functional group (groups related transactions)
- ST/SE = Transaction set (individual claim, remittance, etc.)
Viewing a Segment
Click on any segment name (like NM1, CLM, SVC) to see its contents. The detail panel will show you exactly what each element means.
Example — a CLM (Claim) segment:
| Element | Value | Description |
|---|---|---|
| CLM01 | CLAIM123 | Claim Submitter's Identifier |
| CLM02 | 1500.00 | Total Claim Charge Amount |
| CLM05-1 | 11 | Place of Service: Office |
| CLM05-2 | B | Frequency Type: Resubmission |
| CLM06 | Y | Provider Accept Assignment |
No more counting tildes and pipes — EDI Paisan tells you what everything means.
Step 6: Try the Search
Press Ctrl+F (or Cmd+F on Mac) or click the search icon to find specific data:
Search examples:
| What to Find | Search For |
|---|---|
| All claims | CLM |
| A patient name | SMITH |
| A claim ID | ABC123456 |
| Subscriber info | NM1*IL |
Click any result to jump directly to that segment in the tree.
What You're Looking At (By File Type)
837 Claims
You'll see claims organized by patient/subscriber, with service lines nested under each claim. Key segments to explore:
- NM1 — Names (billing provider, subscriber, patient)
- CLM — Claim-level information
- SV1/SV2 — Service lines (what was performed)
- DTP — Dates (service date, admission date)
835 Remittances
Payment information organized by claim. Look for:
- CLP — Claim payment information
- SVC — Service-level adjustments
- CAS — Adjustment reason codes (why something wasn't paid)
- PLB — Provider-level balancing (adjustments, recoupments)
270/271 Eligibility
Request/response pairs showing eligibility inquiries and results:
- EB — Eligibility benefit information
- DTP — Eligibility date ranges
- MSG — Free-form messages from payers
Tips for Getting Started
Start with the Summary
For 837 and 835 files, EDI Paisan shows a summary view — claim counts, total charges, total payments. Start here to get the big picture before diving into segments.
Don't Worry About Memorizing
You don't need to memorize segment names or element positions. That's what EDI Paisan is for — it translates the cryptic codes into human-readable descriptions.
Use Search Liberally
Looking for a specific patient or claim ID? Search is faster than clicking through the tree. You can search by any value that appears in the file.
What's Next?
Now that you've successfully loaded a file:
Learn More About Navigation
- Navigating Files — Power-user navigation tips
- Search — Advanced search techniques
Understand What You're Seeing
- What is EDI? — Fundamentals if you're new to EDI
- Supported File Types — Deep dive on 837, 835, 270, 271
Try More Features
- Claim Splitting — Break batch files into pieces (Pro)
- PHI Anonymization — Remove PHI for testing (Pro)
Troubleshooting
"File could not be parsed"
Common causes:
- The file isn't a valid X12 EDI file
- The file is encrypted or compressed
- The delimiters are unusual (we handle most, but some are exotic)
Try: Open the file in a text editor. You should see ISA at the very beginning, followed by recognizable text with tildes (~) or similar delimiters.
File loads but looks wrong
Check:
- Is this an ANSI X12 file? (We don't support EDIFACT or HL7)
- Is the file complete? (Look for ISA at start, IEA at end)
Performance is slow
For very large files (50MB+), parsing may take a few seconds. Once loaded, navigation should be instant.
Ready to Go Deeper?
You've taken the first step — loading and exploring an EDI file without needing to decode it manually. From here, explore the docs to learn about specific file types, advanced features, and EDI concepts.
Questions? Check our FAQ or [contact support(https://www.edipaisan.com/#contact).