KW X12 EDI Parser

A Python library for parsing and writing X12 healthcare EDI files.

PyPI: pypi.org/project/kw-x12-parser · Source: github.com/rohanrkamath/KW-X12-Parser

Installation

pip install kw-x12-parser
# With DataFrame support and write-claims CLI:
pip install kw-x12-parser[dataframe]

From source (development):

pip install -e .
pip install -e ".[dataframe]"

Usage

1. casual_parse_x837p – key columns

DataFrame with essential columns (one row per claim): provider_name, claim_id, patient_name, total_charge, etc.

from kw_x12_parser import casual_parse_x837p

df = casual_parse_x837p("path/to/837p_file.txt")
# or: casual_parse_x837p(open("file.txt").read())
print(df[["claim_id", "patient_name", "total_charge"]])

2. full_parse_x837p – full schema

DataFrame with every loop and segment (420+ columns): ISA_, GS_, CLM_, NM1_, SV1_, OTHER_SUBSCRIBER_, etc.

from kw_x12_parser import full_parse_x837p

df = full_parse_x837p("path/to/837p_file.txt")
# Use for COB claims or when you need complete data

3. write_to_edi_x837p – DataFrame to EDI

Convert a DataFrame back to 837P EDI. Two modes: filter original EDI by claim IDs (preserves segments) or build from scratch.

from kw_x12_parser import casual_parse_x837p, write_to_edi_x837p

df = casual_parse_x837p("original.txt")
released = df[df["claim_id"].isin({"123", "456"})]
write_to_edi_x837p(released, "claims_out.txt", original_edi="original.txt")

CLI

write-claims claims.csv -o claims.txt
write-claims claims.csv original.txt -o claims.txt   # filter by claim IDs

Requires pip install kw-x12-parser[dataframe].

Project structure

kw_x12_parser/
└── x837p/
    ├── api.py          # casual_parse_x837p, full_parse_x837p, write_to_edi_x837p
    ├── write_claims.py # write-claims CLI
    ├── workflow/       # Workflow notebook
    ├── edi_examples/   # Sample 837P files
    └── utils/          # Parser internals

Ultimate goal

Support parsing of all healthcare X12 EDI formats:

Current supported formats

• X12 837P (005010X222A1)

Contributing

Issues and pull requests: github.com/rohanrkamath/KW-X12-Parser/issues