RCM & Medical Billing Glossary
Clear, plain-English definitions of the revenue cycle and medical billing terms every practice should know.
Key RCM Terms
Revenue Cycle Management (RCM)
The end-to-end process of managing a healthcare practice's finances, from patient registration and eligibility through coding, claim submission, payment posting, denial management, and collections.
Clean Claim
A claim submitted without errors that passes payer edits and is paid on the first submission, with no need for correction or additional information.
Clean Claim Rate
The percentage of claims accepted and paid on first submission. A higher rate means faster payment and less rework; it is a core RCM health metric.
Claim Scrubbing
An automated and manual review of claims before submission to catch coding, formatting, and data errors that would otherwise cause rejections or denials.
Denial
A claim the payer has processed and decided not to pay. Denials usually require a corrected claim or a formal appeal to recover payment.
Rejection
A claim stopped before adjudication due to a format or data error at the clearinghouse or payer. It never enters processing and can be corrected and resubmitted.
Explanation of Benefits (EOB)
A statement from the payer describing what was covered, paid, adjusted, and owed on a claim. The electronic equivalent is the ERA.
Electronic Remittance Advice (ERA)
The electronic version of an EOB (EDI 835) used to post payments and adjustments automatically.
Eligibility Verification
Confirming a patient's active coverage and benefits before a service to prevent downstream denials.
Prior Authorization
Approval a payer requires before certain services or medications; performing the service without it typically results in denial.
CPT Code
Current Procedural Terminology codes that describe the medical procedures and services performed.
HCPCS
Healthcare Common Procedure Coding System codes, used for products, supplies, drugs, and services not covered by CPT.
ICD-10
The diagnosis coding system that documents why a service was performed and supports medical necessity.
Modifier
A two-character code appended to a CPT/HCPCS code to add detail, for example the professional (26) or technical (TC) component, or a distinct service.
Charge Entry
Recording the coded services and their charges into the billing system so a claim can be created.
Payment Posting
Applying payer and patient payments and adjustments to the correct accounts, and reconciling them against the ERA/EOB.
Accounts Receivable (A/R)
The money owed to a practice for services already provided but not yet paid.
Days in A/R
The average number of days it takes to collect payment. Lower is better; rising A/R days signal collection problems.
Net Collection Rate
The percentage of collectible revenue actually collected, after contractual adjustments. It measures how effectively a practice captures what it is owed.
Denial Rate
The percentage of claims denied by payers. A rising denial rate points to front-end or coding problems that need attention.
Coordination of Benefits (COB)
The rules that determine which payer is primary when a patient has more than one insurance plan.
Timely Filing
The deadline by which a claim must be submitted to a payer. Missing it usually makes the claim unrecoverable.
Superbill
An itemized form listing the services and codes from a visit, used to generate a claim.
EDI 837 / 835
Standard electronic formats: the 837 is the claim sent to the payer; the 835 is the remittance (payment/adjustment) returned.
Write-Off
An amount removed from a patient's balance, either a contractual adjustment agreed with the payer or uncollectible revenue.
Credentialing
The process of enrolling and verifying a provider with payers so services can be billed and reimbursed.
Global Period
A set number of days after a procedure during which related follow-up care is included in the surgical payment and not billed separately.
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