Healthcare Revenue Cycle Management (RCM) Glossary

Coding, Documentation & Charge Capture

CPT® - Current Procedural Terminology

A standardized code set used to describe the medical, surgical, and diagnostic services performed by a provider. CPT codes communicate what service was provided and are central to claim submission and reimbursement.

HCPCS - Healthcare Common Procedure Coding System

A coding system used for services, supplies, drugs, durable medical equipment, ambulance services, and other items not fully captured by CPT codes. HCPCS Level II codes are commonly used for Medicare, Medicaid, and commercial payer billing.

ICD-10-CM - International Classification of Diseases, 10th Revision, Clinical Modification

A diagnosis coding system used in the United States to describe why a patient received care. ICD-10-CM codes support medical necessity, payer adjudication, quality reporting, and risk adjustment.

Modifier

A two-character code added to a CPT or HCPCS code to provide additional billing context. Modifiers may indicate laterality, multiple procedures, professional versus technical components, distinct services, or other circumstances that affect how a claim should be processed.

Charge Capture

The process of ensuring all billable services, procedures, supplies, and medications are accurately documented and converted into charges. Missed or delayed charge capture can directly reduce revenue and distort productivity reporting.

Medical Necessity

A payer determination that a service was clinically appropriate, reasonable, and necessary based on the patient’s diagnosis and condition. Medical necessity issues are a common cause of denials.

Reimbursement & Payment Concepts

RVU - Relative Value Unit

A Medicare-based measurement used to value provider work and services. RVUs generally include work RVUs, practice expense RVUs, and malpractice RVUs. They are often used for provider productivity, compensation models, benchmarking, and reimbursement analysis.

wRVU - Work Relative Value Unit

The portion of the RVU that reflects provider time, skill, effort, training, and clinical intensity. wRVUs are commonly used to measure provider productivity.

Fee Schedule

A list of reimbursement rates by payer, contract, or government program. Fee schedules define how much a provider is expected to be paid for specific services.

Allowed Amount

The maximum amount a payer allows for a covered service. For in-network providers, the difference between the billed charge and the allowed amount is typically adjusted off as a contractual adjustment.

Contractual Adjustment

The portion of a billed charge that is written off to align with a payer’s contracted allowed amount. This is typically not considered lost revenue because it reflects agreed-upon contract terms.

Net Collection Rate

A key RCM performance metric showing how much collectible revenue was actually collected after contractual adjustments. A strong net collection rate generally indicates the organization is collecting the revenue it is entitled to receive.

Claims, Clearinghouses & Adjudication

Clearinghouse

A third-party platform that receives claims from a provider's billing system, checks them for formatting or data issues, and transmits them to payers. Clearinghouses often identify claim errors before the claim reaches the payer.

Clean Claim Rate

The percentage of claims accepted and processed without needing correction, manual intervention, or rework. A low clean claim rate often points to front-end registration, eligibility, coding, documentation, or charge entry issues.

Claim Rejection

A claim returned before payer adjudication, often due to missing information, formatting issues, invalid patient data, or payer enrollment problems. Rejections can usually be corrected and resubmitted.

Claim Denial

A claim received and adjudicated by the payer but not paid as submitted. Denials may result from eligibility issues, authorization problems, coding errors, timely filing, medical necessity, or payer policy requirements.

ERA - Electronic Remittance Advice

The electronic version of a payer's payment explanation to the provider. ERAs show what was paid, denied, adjusted, or transferred to patient responsibility.

EOB - Explanation of Benefits

A patient-facing document explaining how the payer processed a claim, including what was covered, what was denied, and what the patient may owe.

Denials, Appeals & Revenue Leakage

Denial Rate

The percentage of claims denied by payers. Denial rate is one of the most important indicators of RCM performance because denials delay cash, increase rework, and can lead to permanent revenue loss.

Preventable Denial

A denial that could reasonably have been avoided through better front-end registration, eligibility verification, authorization, documentation, coding, or claim submission processes.

Appeal

A formal request asking a payer to reconsider a denied claim. Appeals often require documentation, coding support, medical necessity justification, or proof of timely filing.

Final Denial Write-Off

Revenue that is written off after all appeal options are exhausted or the payer's filing/appeal deadline has passed. This represents true revenue leakage.

Timely Filing Limit

The deadline by which a claim or corrected claim must be submitted to a payer. Missing timely filing limits can result in permanent nonpayment.

Accounts Receivable & Cash Performance

A/R - Accounts Receivable

The total amount owed to the organization for services that have been billed but not yet collected. A/R includes payer balances, patient balances, and other outstanding receivables.

Days in A/R / DAR

A metric that measures how long, on average, it takes to collect payment after services are billed. Lower DAR generally indicates faster cash conversion and more effective follow-up.

Aged A/R Over 90 Days

The percentage of total A/R outstanding for more than 90 days. Higher aged A/R can indicate collection delays, payer issues, unresolved denials, or insufficient follow-up.

Credit Balance

A balance indicating that more money was collected or posted than was owed. Credit balances may result from duplicate payments, overpayments, incorrect adjustments, or coordination-of-benefits issues and require timely review.

Patient Responsibility

The portion of the allowed amount owed by the patient, such as copays, coinsurance, deductibles, or non-covered services.

Front-End RCM & Patient Access

Eligibility Verification

The process of confirming active insurance coverage, benefits, copays, deductibles, and payer requirements before the patient is seen. Strong eligibility verification helps reduce denials and patient balance issues.

Prior Authorization

Advance approval required by a payer before certain services, procedures, medications, or imaging studies are performed. Missing or incorrect authorizations are a major source of denials.

Referral Requirement

A payer requirement that a patient obtain a referral from a primary care provider or other authorized provider before receiving specialty services.

Point-of-Service Collection Rate

The percentage of patient responsibility collected before or at the time of service. Strong point-of-service collections reduce downstream billing costs and improve cash flow.

Productivity, Compliance & Operational Metrics

Cost to Collect

The cost of running the revenue cycle operation as a percentage of collections. This includes staffing, vendor fees, software, clearinghouse costs, and other RCM-related expenses.

Coding Productivity

A measure of coding output, often tracked by charts, encounters, or claims coded per coder per day. Productivity should be evaluated alongside coding quality, accuracy, and complexity.

Coding Accuracy Rate

The percentage of coded encounters that are accurate based on documentation, payer rules, and coding guidelines. High productivity without accuracy can increase denial risk and compliance exposure.

Audit Error Rate

The percentage of reviewed claims, charts, or transactions that contain errors. Audit findings are commonly used to identify training needs, process gaps, compliance concerns, or revenue opportunities.

Compliance Risk

The risk that billing, coding, documentation, privacy, or operational practices do not meet payer, regulatory, or contractual requirements. In RCM, compliance risk may include overcoding, undercoding, insufficient documentation, inappropriate access, or failure to follow payer rules.

KPI - Key Performance Indicator

A measurable performance metric used to evaluate revenue cycle effectiveness. Common RCM KPIs include denial rate, clean claim rate, days in A/R, A/R over 90 days, net collection rate, and cost to collect.