Medical Billing Resource
Medical Billing Resource Center
A practical reference library for professional and institutional claim forms, electronic 837P files, acknowledgments, identifiers, code lookups and submission workflows.
Reviewed September 2026 · Educational reference — verify payer and program requirements.
Medical billing reference centers
Built around the questions people search while preparing real claims: what goes in a field, which form to use, where an identifier belongs, how to print, how an electronic file is structured, and what an acknowledgment means.
CMS-1500 Resource Center
Box-by-box field guide, printing, PDF reference, error checker, identifiers and professional claim workflow.
Open resource →UB-04 / CMS-1450 Guide
Field-by-field form locator map for institutional paper claims with focused guides for common locators.
Open resource →837P Electronic Claims
File structure, envelopes, loops, claims, service lines, 999, 277CA and submission workflow.
Open resource →CMS-485 Resource Center
Home-health plan-of-care guides, certification periods, diagnoses, orders, printing and checklist.
Open resource →Medical Billing Glossary
Individual definitions for the billing terms that appear in claim forms, EDI and payer responses.
Open resource →NPI / TIN / EIN Guide
Provider identifier vs tax identifier, billing vs rendering NPI, and CMS-1500 field placement.
Open resource →Place of Service Codes
Crawlable CMS POS code reference plus an interactive search tool.
Open resource →Submission Workflows
CMS-1500, UB-04, 837P, clearinghouse vs direct submission and post-submission flow.
Open resource →Free Cheat Sheets
Printable CMS-1500, UB-04, 837P, acknowledgment, CMS-485 and identifier references.
Open resource →Free Billing Tools
Claim checker, field lookup, form selector, NPI validator, POS lookup, 837P viewer and response reader.
Open resource →Built to be useful before a purchase
The resource center is intentionally broader than the software catalog. A user can arrive through a specific Google search — such as “CMS-1500 Box 24J,” “UB-04 patient control number,” “NPI vs TIN,” “what is a 277CA,” or “place of service 11” — get a complete answer, and then move naturally to the appropriate software or free tool if it solves the next step.