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Parse X12 healthcare EDI files with Python
_{835 (ERA) • 837P (Professional) • 837I (Institutional)}

---

Features

• Zero dependencies - Uses only Python standard library
• Clean API - x835.parse(content).summary()
• Multiple outputs - .json(), .table(), .summary()
• Direct access - .claims, .payer, .total_billed
• CLI included - Parse files from command line

Installation

pip install openx12

Quick Start

from openx12 import x835, x837p, x837i

# Parse an 835 ERA file
era = x835.parse(edi_content)
print(era.summary())
print(f"Payment: ${era.payment_amount}")
print(f"Payer: {era.payer['name']}")

# Parse an 837P professional claim
claim = x837p.parse(edi_content)
print(claim.summary())
print(f"Total Billed: ${claim.total_billed}")
print(f"Claims: {len(claim.claims)}")

# Parse an 837I institutional claim
claim = x837i.parse(edi_content)
print(claim.summary())
print(f"Facility: {claim.billing_facility['last_name']}")

Output Methods

Each parser returns an object with three output methods:

claim = x837p.parse(content)

# Quick overview
claim.summary()

# Full structured data
claim.json()

# Display-friendly tables
claim.table()

Direct Property Access

Access parsed data directly without calling methods:

# 835 ERA
era = x835.parse(content)
era.payer           # {'name': 'ACME INSURANCE', 'id': '12345'}
era.payee           # {'name': 'MEDICAL CLINIC', 'id': '67890'}
era.claims          # List of all claims
era.payment_amount  # 1500.00
era.check_number    # '123456789'

# 837P Professional
claim = x837p.parse(content)
claim.claims           # List of all claims
claim.patients         # List of all patients
claim.providers        # List of all providers
claim.total_billed     # 72663.87
claim.billing_provider # First provider dict

# 837I Institutional
claim = x837i.parse(content)
claim.claims           # List of all claims
claim.patients         # List of all patients
claim.providers        # List of all providers
claim.total_billed     # 250000.00
claim.billing_facility # First facility dict

CLI Usage

# Parse with auto-detect
openx12 parse remittance.835

# Get summary
openx12 parse claim.edi -f summary

# Specify type
openx12 parse claim.edi -t 837p

# Output as table format
openx12 parse era.txt -f table

# Save to file
openx12 parse input.835 -o output.json

# Read from stdin
cat file.835 | openx12 parse -

Output Structures

.summary()

# 835 ERA
{
    "file_type": "835 (ERA/Remittance)",
    "payer": "ACME INSURANCE",
    "payee": "MEDICAL CLINIC",
    "check_number": "123456789",
    "payment_amount": 1500.00,
    "total_claims": 5,
    "total_charged": 2000.00,
    "total_paid": 1500.00,
    "total_patient_responsibility": 300.00
}

# 837P Professional
{
    "file_type": "837P (Professional Claim)",
    "billing_provider": "SEQUOIA FAMILY MEDICAL CENTER",
    "billing_npi": "1790221703",
    "total_claims": 592,
    "total_patients": 631,
    "total_billed": 72663.87,
    "service_date_range": "2024-12-13 to 2025-12-03",
    "total_services": 1346
}

# 837I Institutional
{
    "file_type": "837I (Institutional Claim)",
    "billing_facility": "GENERAL HOSPITAL",
    "billing_npi": "1234567890",
    "total_claims": 10,
    "total_billed": 250000.00,
    "admission_type_breakdown": {"1": 3, "3": 7}
}

.json()

Returns full parsed data including:

• All segments parsed
• Interchange/group headers
• Claims with services, diagnoses, dates
• Providers with addresses
• Patients with demographics

.table()

Returns a formatted text table string for display:

================================================================================
837P Professional Claim
================================================================================
Provider:       PREMIER MEDICAL GROUP
NPI:            1234567890
Total Claims:   1
Total Billed:   $350.00

CLAIMS
--------------------------------------------------------------------------------
Claim #   Amount    POS  Date        Payer Seq  Services  Dx
--------  --------  ---  ----------  ---------  --------  --
CLAIM001  $350.00   11   2023-12-10  P          3         3

SERVICES
--------------------------------------------------------------------------------
Claim #   Line  CPT    Mods  Charge    Units  Date
--------  ----  -----  ----  --------  -----  ----------
CLAIM001  1     99214  25    $150.00   1      2023-12-10
CLAIM001  2     36415        $50.00    1      2023-12-10
CLAIM001  3     80053        $150.00   1      2023-12-10

Supported Transactions

Code	Name	Description
835	ERA	Electronic Remittance Advice (payment/denial info)
837P	Professional	Physician/outpatient claims (CMS-1500 equivalent)
837I	Institutional	Hospital/facility claims (UB-04 equivalent)

Development

git clone https://github.com/josephbiagio/openx12.git
cd openx12
pip install -e ".[dev]"
pytest tests/ -v

License

MIT © Joseph Biagio