Medical Billing Resource
Medical Billing Glossary
Plain-English definitions for the claim-form fields, identifiers, electronic transactions and billing terms that appear throughout professional and institutional workflows.
Reviewed September 2026 · Educational reference — verify payer and program requirements.
Medical billing terms A-Z
Each term has its own crawlable reference page with a plain-English definition and links to related claim-form resources.
277CA835837I837P999Billing providerCARCClean claimClearinghouseCMS-1500CMS-485Condition codeCoordination of benefitsCPTDiagnosis pointerEINEOBERAHCPCSICD-10-CMMedical necessityNPIOccurrence codeOrdering providerPatient control numberPayerPlace of servicePrior authorizationRARCReferring providerRendering providerRevenue codeService facilitySSNTaxonomy codeTimely filingTINType of billUB-04Value code
Use the glossary as a navigation layer
The goal is not to replace coding manuals or payer policies. The glossary helps staff move quickly from a term they encountered — such as NPI, diagnosis pointer, type of bill or 277CA — to the specific form field, electronic transaction or workflow that uses it.