
837 Health Care Claim: Professional (X222A2)
CGS Medicare’s published 837 specification, rendered as an interactive guide. Expand any segment to see its elements, data types, lengths and accepted codes — then validate your own document against it below.
Specification
Validate a 837
Paste or upload a document and check it against CGS Medicare’s published rules — segment order and repetition, required elements, field lengths, data types and accepted codes. Nothing is stored.
Go live on CGS Medicare’s 837 in days, not months
Weredi maps this guide to your ERP, runs the test cycle with CGS Medicare, and keeps the spec current as it changes.