Revenue Cycle Management Glossary

Revenue Cycle Glossary for the RHIA Exam

Revenue cycle management is a core competency for RHIA professionals. This glossary covers essential terms related to coding systems, reimbursement methodologies, claims processing, billing regulations, and the financial processes that support healthcare organizations from patient registration through final payment.

Accounts Receivable (A/R)

The outstanding balances owed to a healthcare organization for services rendered. A/R management involves tracking, collecting, and reconciling payments from patients and third-party payers.

Adjudication

The process by which a health plan reviews and determines payment for a submitted claim. Adjudication results in the claim being paid, denied, or returned for additional information.

Ambulatory Payment Classification (APC)

The prospective payment system used by Medicare to reimburse hospital outpatient services. APCs group clinically similar services that require comparable resources and assign a payment rate to each group.

Capitation

A payment model in which a provider receives a fixed, per-member, per-month payment for each enrolled patient regardless of the services provided. Capitation shifts financial risk from the payer to the provider.

Case-Mix Index (CMI)

A numeric value reflecting the average relative weight of all cases treated at a facility during a given period. A higher CMI indicates a more complex patient population and typically corresponds to higher reimbursement.

Charge Description Master (CDM)

A comprehensive listing of all billable items and services provided by a healthcare facility, including descriptions, CPT/HCPCS codes, revenue codes, and charges. Also known as the chargemaster.

Chargemaster

A comprehensive price list of all billable services and items within a healthcare organization. The chargemaster links services to appropriate billing codes and serves as the foundation for charge capture and claims generation.

Clean Claim

A claim submitted to a payer that contains all required data elements and passes initial edits without errors. Clean claims are processed faster and result in timely reimbursement.

Clinical Documentation Improvement (CDI)

A process that improves clinical documentation to more accurately reflect the severity of illness and complexity of care. CDI programs help ensure appropriate reimbursement and accurate quality reporting.

CMS-1500

The standard paper claim form used by noninstitutional providers to bill Medicare and other payers for professional services. The electronic equivalent is the ANSI X12 837P transaction.

Complication or Comorbidity (CC)

A secondary diagnosis that increases the consumption of healthcare resources, affecting the DRG assignment and reimbursement. CCs are distinguished from major complications or comorbidities (MCCs), which have an even greater impact.

Computer-Assisted Coding (CAC)

Technology that uses natural language processing and algorithms to automatically generate medical codes from clinical documentation. CAC systems suggest codes for review by coding professionals, improving productivity and consistency.

CPT (Current Procedural Terminology)

A medical code set maintained by the American Medical Association that describes medical, surgical, and diagnostic procedures and services. CPT codes are used for physician and outpatient billing and have three categories.

Denial Management

The process of investigating, appealing, and resolving denied insurance claims. Effective denial management identifies root causes and implements corrective actions to reduce future denials and recover lost revenue.

Diagnosis-Related Group (DRG)

A patient classification system that groups patients with similar diagnoses, procedures, age, and complications for the purpose of setting payment rates. Medicare uses MS-DRGs for inpatient prospective payment.

Electronic Remittance Advice (ERA)

An electronic document sent by a payer to a provider that explains the adjudication of submitted claims. The ERA details payments, adjustments, and reasons for denials. The standard format is the ANSI X12 835 transaction.

Encoder

Software used by coding professionals that facilitates the assignment of diagnosis and procedure codes. Encoders may use logic-based or book-based approaches and include built-in references and coding guidelines.

Explanation of Benefits (EOB)

A statement sent by a health plan to the patient that summarizes how a claim was processed, including the amount billed, allowed amount, amount paid, and patient responsibility.

Fee-for-Service (FFS)

A payment model in which providers are reimbursed for each individual service performed. FFS payments are based on the volume of services rather than the value or outcome of care delivered.

Grouper

Software that assigns cases to the appropriate DRG, APC, or other payment group based on diagnosis codes, procedure codes, age, sex, discharge status, and other relevant data elements.

HCPCS (Healthcare Common Procedure Coding System)

A standardized coding system used for billing Medicare and other payers. HCPCS includes Level I (CPT codes) and Level II codes, which cover supplies, equipment, drugs, and services not included in CPT.

ICD-10-CM

The International Classification of Diseases, Tenth Revision, Clinical Modification, used for coding and reporting diagnoses in all healthcare settings. ICD-10-CM contains approximately 72,000 codes and provides greater specificity than its predecessor.

ICD-10-PCS

The International Classification of Diseases, Tenth Revision, Procedure Coding System, used exclusively for coding inpatient hospital procedures in the United States. ICD-10-PCS uses a seven-character alphanumeric code structure.

Major Complication or Comorbidity (MCC)

A secondary diagnosis that has a significant impact on resource consumption and may result in assignment to a higher-weighted DRG. MCCs reflect conditions with greater severity than standard CCs.

Medical Necessity

The determination that a healthcare service or procedure is reasonable and necessary for the diagnosis or treatment of a condition. Payers use medical necessity criteria to evaluate whether services qualify for reimbursement.

Medicare Severity Diagnosis-Related Groups (MS-DRGs)

The DRG system used by Medicare for the Inpatient Prospective Payment System. MS-DRGs incorporate severity of illness through three subgroups based on the presence of CCs, MCCs, or neither.

National Correct Coding Initiative (NCCI)

A CMS program that promotes correct coding and prevents improper payment of Medicare Part B claims. NCCI edits identify pairs of codes that should not be reported together for the same beneficiary on the same date of service.

Outlier Payment

An additional payment made under prospective payment systems for cases with extraordinarily high costs that exceed the standard DRG or APC payment. Outlier payments help protect hospitals from significant financial losses on unusually expensive cases.

Principal Diagnosis

The condition determined after study to be chiefly responsible for the patient's admission to the hospital. The principal diagnosis drives DRG assignment and is a key factor in reimbursement.

Prospective Payment System (PPS)

A reimbursement method in which payment rates are established in advance for a defined period based on predetermined criteria. Medicare uses multiple PPS models, including IPPS for inpatient care and OPPS for outpatient services.

Relative Weight

A numeric value assigned to each DRG that reflects the average resources required to treat cases in that group compared to the national average. Higher relative weights indicate greater resource consumption and higher payment.

Remittance Advice

A document from a payer to a provider that explains the payment or denial of a claim. It details the billed amount, allowed amount, adjustments, and reasons for any payment reductions or denials.

Revenue Code

A four-digit code used on the UB-04 claim form to identify the department or type of service provided to a patient. Revenue codes are assigned to each line item on an institutional claim.

UB-04 (CMS-1450)

The standard paper claim form used by institutional providers such as hospitals and skilled nursing facilities to bill for services. The electronic equivalent is the ANSI X12 837I transaction.

Unbundling

The improper practice of billing multiple procedure codes for services that should be reported under a single comprehensive code. Unbundling results in higher reimbursement and is considered a form of fraud or abuse.

Upcoding

The fraudulent practice of assigning a diagnosis or procedure code that represents a more complex or costly service than what was actually provided. Upcoding results in inflated reimbursement and violates federal regulations.

Utilization Review (UR)

The process of evaluating the necessity, appropriateness, and efficiency of healthcare services. UR may be conducted prospectively, concurrently, or retrospectively and supports both quality of care and cost management.

Value-Based Purchasing (VBP)

A payment model that ties provider reimbursement to quality and performance measures rather than volume of services. CMS Hospital VBP adjusts payments based on clinical outcomes, patient experience, safety, and efficiency.