Glossary category
Revenue Cycle & Billing
122 plain-English definitions covering revenue cycle & billing — written for the people who run ambulatory surgery centers. Every term links to its own page with key takeaways and FAQs.
- Accounts Receivable (A/R)Accounts receivable (A/R) is the total dollar amount owed to a provider for services already rendered but not yet collected from payers or patients. Managing A/R, especially days in A/R, is central to a surgery center's revenue cycle health and cash position.
- Actual Acquisition Cost (AAC)The true price a pharmacy pays to purchase a drug, net of discounts and rebates. Payers increasingly reimburse based on AAC rather than list-price benchmarks to reflect real costs and curb overpayment.
- AdjudicationAdjudication is the process a payer uses to evaluate a submitted claim against the patient's coverage, benefits, and policy rules to decide whether and how much to pay. The outcome, whether payment, denial, or adjustment, drives the next revenue-cycle action.
- AdjustmentAn adjustment is a change a provider posts to a patient account that increases or decreases the balance without a payment, such as a contractual write-off, courtesy discount, or correction. Accurate adjustments reconcile billed charges with what payers actually allow.
- Advance Beneficiary Notice (ABN)An Advance Beneficiary Notice (ABN) is a written notice a provider gives a Medicare patient before delivering a service Medicare is likely to deny, informing them they may be financially responsible. Surgery centers use ABNs to protect billing rights on non-covered procedures.
- All-Patient Diagnosis Related Group (AP-DRG)An expanded diagnosis-related group classification that includes pediatric and non-Medicare populations omitted by the standard Medicare system. Payers use AP-DRGs to set inpatient reimbursement reflecting a broader case mix.
- Allowed AmountThe maximum a payer will recognize as reimbursable for a covered service, combining the plan's payment and the patient's cost share. Charges above the allowed amount are typically written off under contract.
- Ambulatory Patient Group (APG)An early outpatient classification system grouping clinically similar procedures and visits for bundled reimbursement. APGs preceded Medicare's Ambulatory Payment Classifications and influenced how outpatient services are bundled and paid.
- Ambulatory Payment Classification (APC)The Medicare system that groups outpatient services into payment categories, each with a set reimbursement rate, under the Outpatient Prospective Payment System. APCs determine how many ambulatory surgery and hospital outpatient procedures are paid.
- Amount Not CoveredAmount not covered is the portion of billed charges a payer will not pay because the service is excluded, exceeds plan limits, or falls outside the contracted allowable. The remaining balance typically shifts to the patient or becomes a provider write-off.
- Ancillary ServicesSupporting diagnostic, therapeutic, and custodial services that supplement a primary clinical encounter, such as laboratory tests, imaging, pharmacy, and anesthesia. In ambulatory surgery, ancillary charges are billed alongside the procedure and affect total reimbursement.
- AppealA formal request asking a payer to reconsider a denied or underpaid claim or a coverage decision, supported by documentation showing the service met medical-necessity and contract terms. Appeals are a core revenue-cycle workflow for surgery centers recovering denied claim dollars.
- Applied to Deductible (ATD)Applied to deductible (ATD) is the portion of an allowed claim amount credited toward a patient's annual deductible rather than paid by the plan. Until the deductible is met, this amount becomes patient responsibility, a common driver of surgery-center patient balances.
- Assignment of Benefits (AOB)Assignment of benefits (AOB) is a patient authorization directing the insurer to pay claim proceeds directly to the provider rather than to the patient. Surgery centers obtain AOB at registration to ensure they receive payer reimbursement directly.
- Bad DebtBad debt is an outstanding patient or payer balance a provider deems uncollectible after reasonable collection efforts and writes off as a loss. Rising patient cost-sharing has made bad debt a significant concern for ambulatory surgery centers.
- Bad DebtsAmounts a provider billed for services but cannot collect from patients or payers and has written off as uncollectible after reasonable collection efforts. Tracking and minimizing bad debt is central to a surgery center's revenue-cycle performance.
- Balance BillingThe practice of charging a patient the difference between a provider's full charge and the amount their insurer paid, common with out-of-network care. Federal and state rules, including the No Surprises Act, now restrict it in many situations.
- Base Payment RateA base payment rate is the standardized reimbursement amount a payer sets for a service or group before adjustments for case complexity, geography, or policy factors. Under Medicare's ASC payment system, the base rate is scaled by relative weights to determine final payment.
- Berenson-Eggers Type of Service (BETOS) Classification SystemA coding framework that groups healthcare procedure codes into clinically meaningful categories, such as evaluation, surgery, imaging, and tests, to support analysis of Medicare spending and utilization trends across services.
- Billing ReconciliationBilling reconciliation is the process of comparing charges, claims, payments, and adjustments to confirm that what was billed matches what was paid and posted. For surgery centers it catches missing charges, underpayments, and posting errors before they erode revenue.
- Bundled PaymentsBundled payments are a reimbursement model in which one fixed amount covers all services tied to an episode of care, such as a joint replacement, across providers and settings. Surgery centers participating in bundles share financial risk and reward for total episode cost and quality.
- Case MixCase mix is the range and relative complexity of patients or procedures a facility treats over a period, often expressed as an index. A higher-acuity case mix generally warrants greater reimbursement and reflects the resource intensity of a surgery center's caseload.
- Case Mix Index (CMI)Case mix index (CMI) is a numeric measure of the average clinical complexity and resource intensity of a facility's patients, derived from diagnosis-related group weights. A higher CMI signals more complex, higher-reimbursing cases and is used in payment, benchmarking, and capacity planning.
- Case-Mix Group (CMG)A case-mix group (CMG) is a classification that bundles patients with similar clinical characteristics and expected resource use into a single payment category, used notably in inpatient rehabilitation reimbursement. CMGs let payers set predictable rates based on patient complexity rather than individual services.
- Cash FlowCash flow is the movement of money into and out of an organization over time, reflecting the timing of collections against expenses. For ambulatory surgery centers, healthy cash flow depends on fast, clean claims and quick payer turnaround in the revenue cycle.
- Charge CaptureCharge capture is the process of accurately recording all billable services, supplies, and procedures a patient receives so they appear on the claim. Incomplete charge capture causes revenue leakage, making it a foundational step in a surgery center's revenue cycle.
- Charge CodeA charge code is an internal identifier a provider assigns to a billable service, supply, or procedure, linking it to a price and often to standardized billing codes. Accurate charge codes ensure every surgical service performed is captured and billed correctly.
- Charge Description Master (CDM)A charge description master (CDM), or chargemaster, is the comprehensive electronic catalog of every billable item and service a facility offers, with associated codes and prices. Maintaining an accurate CDM is foundational to correct charge capture and clean claims in a surgery center.
- Charge Status IndicatorA charge status indicator is a code attached to a service that signals how it is treated for payment, such as separately payable, packaged, or excluded. Under outpatient and ASC payment systems, these indicators determine whether an item is reimbursed individually or bundled.
- Chronic Care Management (CCM)Chronic Care Management (CCM) is a Medicare-reimbursed service providing non-face-to-face coordination, care planning, and monitoring for patients with two or more chronic conditions. Practices bill specific CPT codes monthly, making accurate time tracking and documentation essential to capturing this recurring revenue.
- ClaimA claim is the itemized request a provider submits to a payer for reimbursement of services rendered, listing diagnoses, procedure codes, charges, and patient details. Clean, accurate claims are the foundation of an ambulatory surgery center's revenue cycle and cash flow.
- Claim AdjustmentA claim adjustment is a modification a payer or provider makes to a claim's billed amount, such as applying contractual reductions, denials, or corrections, often communicated through standardized adjustment reason codes. These adjustments explain the difference between charged and paid amounts.
- Claim DenialA claim denial occurs when a payer accepts a claim for processing but refuses to pay all or part of it, citing reasons such as lack of medical necessity, coverage limits, or missing authorization. Denials require appeal or correction, a major revenue-cycle workload for surgery centers.
- Claim denial rateClaim denial rate is the percentage of submitted claims a payer rejects or refuses to pay, measured against total claims billed. It is a core revenue-cycle KPI for surgery centers, signaling coding errors, eligibility gaps, or authorization failures needing correction.
- Claim RejectionA claim rejection occurs when a claim fails front-end edits and is returned unprocessed because of formatting or data errors, such as an invalid code or member ID, before the payer ever adjudicates it. Rejected claims must be corrected and resubmitted promptly to avoid payment delays.
- Claim SubmissionClaim submission is the process of transmitting a completed claim, electronically or on paper, to a payer for adjudication and payment. Timely, accurate submission within payer filing deadlines is a critical step in a surgery center's revenue cycle.
- Claims AdjudicationClaims Adjudication is the payer's process of reviewing a submitted claim against coverage, coding, and policy rules to decide whether to pay, deny, or adjust it. The outcome determines reimbursement, patient responsibility, and any denials a billing team must work.
- Clean ClaimA clean claim is a complete, accurate claim that contains all required information and passes payer edits, allowing it to be adjudicated and paid without rejection, denial, or additional follow-up. A high clean-claim rate is a key indicator of revenue-cycle efficiency.
- ClearinghouseA clearinghouse is an intermediary that receives provider claims, scrubs them for errors and formatting, and routes them electronically to the correct payers. By catching issues before submission, clearinghouses reduce rejections and speed reimbursement for ambulatory surgery centers and their billing teams.
- co-197CO-197 is a claim adjustment code that pairs the group code CO (Contractual Obligations) with reason code 197: precertification, authorization, or notification absent. It means the payer denied the service because required prior approval was not obtained.
- CodingCoding is the process of translating clinical documentation of diagnoses, procedures, and services into standardized alphanumeric codes used for billing, reporting, and analytics. Accurate coding determines reimbursement and compliance for every procedure a surgery center performs.
- Coding Compliance PlanA coding compliance plan is a formal organizational policy framework establishing rules, audits, training, and accountability to ensure codes are assigned accurately and lawfully. It helps surgery centers prevent improper billing, fraud exposure, and payer audit penalties.
- CollectionsThe activities a provider undertakes to obtain payment owed for services rendered, from both payers and patients. In an ASC, collections span insurer reimbursement and patient balances after surgery, and weak collections directly erode realized revenue.
- Commercial GroupersCommercial groupers are proprietary software algorithms that classify claims into payment categories, such as DRGs or APCs, for reimbursement and analytics. Private payers use vendor groupers that may differ from Medicare's, affecting how surgery-center claims are bundled and paid.
- Coordination of BenefitsThe rules that determine the payment order when a patient has more than one insurance plan, deciding which payer is primary and which is secondary to prevent overpayment. Accurate coordination of benefits at registration is essential for clean ambulatory surgery center claims and avoiding denials.
- CopayA copay is a fixed dollar amount a patient owes for a covered service, such as a visit or procedure, with the insurer paying the remainder under plan terms. Collecting accurate copays at the point of service is a core ambulatory surgery center revenue-cycle task.
- Cost to CollectCost to Collect is a revenue-cycle metric expressing the total expense of collecting payment as a percentage of net revenue collected. For ASCs, a lower ratio signals an efficient billing operation, while a high one flags wasted administrative effort.
- CPT CodesCPT (Current Procedural Terminology) codes are standardized five-character codes maintained by the American Medical Association that identify medical, surgical, and diagnostic procedures on claims. Accurate CPT coding drives correct ASC reimbursement, since each surgical procedure maps to a specific payable code.
- Current Procedural Terminology (CPT)Current Procedural Terminology (CPT) is the American Medical Association's standardized code set naming medical, surgical, and diagnostic services for billing and documentation. Accurate CPT coding of each surgical procedure drives ambulatory surgery center claims, payer reimbursement levels, and revenue-cycle integrity.
- Customary, Prevailing, and ReasonableCustomary, prevailing, and reasonable is a historical Medicare methodology for setting physician payment by comparing a provider's charge against their own customary fee, the area's prevailing rate, and a reasonableness check. It preceded the resource-based fee schedule used today.
- Days Sales Outstanding (DSO)Days Sales Outstanding (DSO), often called days in accounts receivable, measures the average number of days it takes to collect payment after a service is billed. For ASCs, a lower DSO indicates faster cash flow and healthier revenue-cycle performance.
- Denial OverturnedA denial overturned occurs when a payer reverses its initial refusal to pay a claim, typically after the provider submits an appeal with corrected coding or supporting documentation. A strong overturn rate recovers revenue ASCs would otherwise lose to denials.
- Denials ManagementDenials management is the systematic process of preventing, tracking, appealing, and resolving claims that payers refuse to pay. For ASCs, it involves identifying root causes, reworking denials promptly, and feeding patterns back upstream to reduce future revenue leakage.
- Diagnosis (Dx)A diagnosis (Dx) is the clinical identification of a patient's disease or condition from symptoms, examination, and test results. Coded with ICD systems, the diagnosis establishes medical necessity for procedures and is essential to ambulatory surgery center claims and payer reimbursement.
- Diagnosis-Related Group (DRG)A Diagnosis-Related Group (DRG) is the system Medicare and many other payers use to pay hospitals a fixed amount per inpatient stay. Each admission is assigned to a group of clinically similar, similarly resource-intensive cases, and the hospital is paid a set rate for that group regardless of the individual services delivered.
- Discharged Not Final Billed (DNFB)Discharged Not Final Billed (DNFB) is a revenue-cycle metric capturing accounts where the patient has been discharged or completed service but the claim has not yet been billed. High DNFB delays ASC cash flow and signals coding or documentation bottlenecks.
- Down-CodingDown-coding is when a payer or coder assigns a lower-intensity procedure or service code than documented, reducing reimbursement. For ASCs, payer-driven down-coding can systematically underpay surgical claims, making documentation review and appeals important to recover the correct amount.
- Electronic Claims Submission (ECS)Electronic Claims Submission (ECS) is the digital transmission of healthcare claims from providers to payers or clearinghouses, replacing paper forms. It accelerates adjudication, reduces errors, and improves tracking, making it foundational to efficient revenue cycle operations at ambulatory surgery centers.
- Electronic Funds Transfer (EFT)Electronic Funds Transfer (EFT) is the direct electronic movement of payment from a payer into a provider's bank account, replacing paper checks. EFT speeds ASC cash receipt and, paired with electronic remittance, enables faster and cleaner payment reconciliation.
- Electronic Remittance Advice (ERA)Electronic Remittance Advice (ERA) is the digital explanation a payer sends detailing how a claim was adjudicated, including paid amounts, adjustments, and denial reasons, typically via the EDI 835. ERAs let ASCs automate payment posting and identify underpayments quickly.
- Eligibility VerificationEligibility verification is the process of confirming a patient's active insurance coverage and benefits before service. For ASCs, checking eligibility before surgery prevents denials, clarifies patient financial responsibility, and avoids performing procedures the plan will not cover.
- EncoderAn Encoder is software that helps medical coders assign accurate diagnosis and procedure codes by applying coding rules, edits, and reference logic. In ambulatory surgery center revenue cycles, encoders speed CPT and ICD-10 assignment and reduce claim denials.
- Episode of CareAn Episode of Care is the full set of services a patient receives for a single condition or procedure across a defined period and settings. In bundled-payment models, it anchors how ambulatory surgery centers and providers are reimbursed.
- Fee-for-service (FFS)Fee-for-service (FFS) is a payment model reimbursing providers separately for each service or procedure delivered. It remains the predominant way ambulatory surgery centers bill payers, tying revenue directly to procedure volume and accurate per-claim coding.
- General Ledger SoftwareAn accounting system that records and organizes a healthcare organization's financial transactions across accounts, producing trial balances and financial statements. For surgery centers, it integrates with billing and revenue-cycle systems to reconcile collections, expenses, and reporting.
- Good Faith EstimateA Good Faith Estimate is a written projection of expected charges that providers must give uninsured or self-pay patients before scheduled care, as required by the No Surprises Act. ASCs issue these so surgical patients can anticipate out-of-pocket costs.
- GuarantorA guarantor is the person legally responsible for paying a patient's healthcare bill, who may be the patient or, for minors and dependents, a parent or spouse. ASCs identify the correct guarantor to direct patient statements and collect balances.
- Healthcare Common Procedure Coding System (HCPCS)The Healthcare Common Procedure Coding System (HCPCS) is a standardized code set for billing medical services, supplies, drugs, and equipment, including CPT-based Level I and alphanumeric Level II codes; ambulatory surgery centers rely on it to code procedures and implants for reimbursement.
- Healthcare Price TransparencyHealthcare price transparency is the practice and regulatory requirement of disclosing the prices of medical services so patients can compare and anticipate costs. Federal rules require hospitals and many facilities, including some ASC contexts, to publish standard charges and negotiated rates.
- Healthcare ReimbursementHealthcare reimbursement is the payment a provider receives from payers or patients for delivered services, determined by coding, contracted rates, and coverage rules; for ambulatory surgery centers it hinges on accurate procedure coding, prior authorization, and clean claim submission.
- Healthcare Revenue CycleThe healthcare revenue cycle is the end-to-end financial process spanning patient scheduling, registration, eligibility, coding, claim submission, payment, and collections. For ASCs, an efficient revenue cycle converts completed surgeries into collected cash while minimizing denials and days in accounts receivable.
- Hospital RevenueHospital revenue is the total income a hospital earns from patient services and other sources, encompassing gross charges, contractual adjustments, and net collections from payers and patients; its accuracy depends on coding, charge capture, and effective revenue cycle management.
- ICD CodesICD (International Classification of Diseases) codes are standardized codes maintained by the WHO and adapted in the U.S. as ICD-10-CM to document diagnoses and conditions on claims. Accurate ICD coding establishes medical necessity for ASC procedures and supports clean reimbursement.
- ICD-10ICD-10 is the tenth revision of the International Classification of Diseases, a standardized coding system for documenting diagnoses and, in the U.S. inpatient setting, procedures; accurate ICD-10 coding drives claim adjudication, medical necessity, and risk adjustment in the revenue cycle.
- Improper Payment ReviewImproper payment review is the auditing process payers and oversight bodies use to identify claims paid in error, whether overpayments, underpayments, or payments lacking documentation. ASCs face these reviews from Medicare contractors and must produce records to defend reimbursed claims.
- Indigent CareHealth services provided to patients who lack the financial means or insurance to pay, often delivered as charity care or funded through safety-net programs. Facilities track indigent care for financial assistance policies, cost reporting, and community benefit obligations.
- Inpatient ClaimA billing claim submitted for services provided during a patient's admitted hospital stay, typically reimbursed under bundled methodologies such as diagnosis-related groups. It differs structurally from outpatient and ambulatory surgery claims in coding, formatting, and payment logic.
- Insurance VerificationInsurance verification is the process of confirming a patient's coverage, plan details, and benefit specifics with the payer before service. For ASCs, it validates active coverage and authorization requirements ahead of surgery, reducing denials and clarifying patient financial responsibility.
- Integrated Revenue Cycle (IRC)An Integrated Revenue Cycle (IRC) is a model that unifies the financial processes of physician, hospital, and ancillary services under shared systems, staff, and workflows. The aim is consistent billing, fewer handoffs, and a single financial view across care settings.
- Itemized BillAn itemized bill is a detailed statement listing every individual service, supply, and charge associated with a patient's care, each tied to a procedure or revenue code. ASC patients may request one to understand and verify the charges from their surgery.
- Maximum allowable cost (MAC)Maximum allowable cost (MAC) is the upper reimbursement limit a payer or pharmacy benefit manager sets for a generic drug, regardless of acquisition price. MAC lists cap what pharmacies are paid and are a recurring point of payer-pharmacy dispute.
- Medical BillingMedical billing is the process of preparing, submitting, and following up on claims to payers and patients to secure payment for healthcare services. For ASCs, it translates surgical encounters into coded claims and manages the path from submission through reimbursement.
- Medical NecessityMedical necessity is the standard requiring that a service be appropriate, reasonable, and consistent with accepted clinical practice for a patient's condition. Payers deny claims lacking documented necessity, making it a central revenue-cycle concern for ambulatory surgery centers seeking clean reimbursement.
- Medicare Code Editor (MCE)The Medicare Code Editor (MCE) is software that screens inpatient claims for coding errors and inconsistencies, such as invalid codes or age and sex conflicts, before payment. It enforces coding integrity within Medicare's inpatient claims-processing system.
- Medicare Cost Report (MCR)The Medicare Cost Report (MCR) is an annual financial filing that Medicare-certified facilities submit detailing costs, charges, and utilization. CMS uses it to reconcile reimbursement and set payment rates, making accuracy material to a facility's revenue position.
- Medicare Severity Diagnosis Related Group (MS-DRG)The Medicare Severity Diagnosis Related Group (MS-DRG) is a classification system that groups inpatient hospital stays by diagnosis, procedures, and severity to set fixed prospective payments. It rewards efficient care by paying a predetermined rate per case rather than per service.
- Medicare/Medicaid Provider Number (MPN)A Medicare/Medicaid Provider Number (MPN) is the identifier CMS assigns to certify a provider or facility for participation and billing in those programs. An ambulatory surgery center needs valid enrollment numbers before submitting reimbursable government claims.
- National Drug Code (NDC)The National Drug Code (NDC) is a unique FDA-assigned identifier for each marketed medication, encoding the manufacturer, product, and package size. It is required on claims for drug billing, supporting accurate reimbursement and inventory tracking in surgical settings.
- National Provider Identifier (NPI) StandardThe National Provider Identifier (NPI) Standard is a HIPAA requirement assigning every covered healthcare provider a unique ten-digit number for use in administrative transactions. Accurate NPI data on claims is foundational to clean ambulatory surgery center billing and payer adjudication.
- Net CollectionsNet collections, often expressed as a net collection rate, measures the percentage of reimbursable revenue a provider actually collects after contractual adjustments, comparing payments received to the allowed amount. It reveals how effectively an ASC captures the revenue it is entitled to.
- Net Patient Revenue (NPR)Net Patient Revenue (NPR) is the actual revenue a provider expects to collect for services after subtracting contractual payer adjustments, discounts, charity care, and bad debt from gross charges. For an ambulatory surgery center, NPR is the realistic top-line measure of collected reimbursement.
- ObservationObservation is a hospital status in which a patient is monitored and evaluated under outpatient classification rather than formal inpatient admission, often while clinicians determine the need for admission. The distinction significantly affects billing, Medicare reimbursement, and patient cost-sharing.
- Outpatient ClaimA billing record submitted to a payer for services rendered without an overnight admission, such as a same-day surgery or diagnostic visit. Outpatient claims rely on CPT and HCPCS procedure codes and facility billing forms, and accurate coding is central to ambulatory surgery center reimbursement.
- Patient CollectionsThe process of recovering the share of a healthcare bill owed directly by the patient after insurance has paid, spanning statements, reminders, and payment arrangements. For ambulatory surgery centers, rising deductibles make timely patient collections a major driver of cash flow.
- Patient Payment PlansArrangements that let patients pay a balance in scheduled installments instead of one lump sum, often interest-free over several months. Surgery centers offer these to make high out-of-pocket costs manageable, reducing bad debt while improving the odds of full collection.
- Patient ResponsibilityThe portion of a healthcare charge a patient must pay personally, comprising copays, coinsurance, deductibles, and non-covered services after the payer adjudicates the claim. Accurately estimating this before a surgical procedure helps ambulatory centers collect upfront and avoid surprise balances.
- Patient StatementA billing document sent to a patient itemizing services rendered, payer payments, adjustments, and the remaining balance owed. Clear, timely statements are central to ambulatory surgery center collections, since confusing or delayed statements are a common cause of slow or missed patient payments.
- Payment PostingThe revenue-cycle step of recording payments, adjustments, and denials from payers and patients into the billing system, reconciling them against expected amounts. Accurate posting at a surgery center reveals underpayments and denials early, making it foundational to dependable cash reconciliation.
- Point-of-Service (POS) CollectionsCollecting a patient's expected out-of-pocket amount at or before the time of care rather than billing afterward. For ambulatory surgery centers, POS collections at check-in or pre-registration capture deductibles and coinsurance upfront, sharply reducing downstream patient bad debt.
- pr 26 denial codePR 26 is a denial code that pairs the group code PR (Patient Responsibility) with reason code 26: expenses incurred prior to coverage. It means the service took place before the patient's insurance became effective, so the balance falls to the patient.
- pr 3 in medical billingPR 3 in medical billing pairs the group code PR (Patient Responsibility) with Claim Adjustment Reason Code 3, the co-payment amount. On a remittance it signals that a fixed copay for the service is owed by the patient, not the payer.
- Primary DiagnosisThe condition identified as the chief reason for a patient's current encounter or course of treatment. In outpatient and ASC billing it drives medical-necessity justification and code sequencing, directly influencing claim acceptance and reimbursement.
- Principal DiagnosisThe condition established, after study, to be chiefly responsible for an inpatient admission, per official coding guidelines. It governs diagnosis-related group assignment and reimbursement; it differs from the primary diagnosis convention used in outpatient settings.
- Q6 ModifierA HCPCS billing modifier indicating a service was furnished by a substitute physician under a fee-for-time (locum tenens) arrangement. It lets a practice bill under the regular physician's identifier while a temporary clinician covers, subject to Medicare time limits.
- ReferralsFormal recommendations from one provider directing a patient to another for further evaluation or treatment, often required by payers for coverage. In ASC revenue cycle, missing or expired referrals and authorizations are a common cause of claim denials.
- ReimbursementThe payment a provider receives from a payer or patient for services delivered, set by contracted rates, fee schedules, or negotiated agreements. Surgery center profitability hinges on reimbursement levels relative to case cost, which vary widely across procedures and payers.
- Relative Value Unit (RVU)A Relative Value Unit (RVU) is a standardized measure used in the Medicare fee schedule to quantify the work, practice expense, and malpractice cost of a service. RVUs multiplied by a conversion factor determine procedure reimbursement.
- RemittanceThe payer's explanation accompanying a payment, detailing how each claim line was adjudicated including amounts paid, adjusted, and denied with reason codes. Electronic remittance advice (ERA) lets surgery centers automate posting and quickly identify underpayments or denial trends.
- Restricted FundsRestricted funds are donated or granted monies that a nonprofit healthcare organization must spend only on purposes the donor specified. They cannot be redirected to general operations, requiring separate accounting and reporting to maintain compliance.
- Revenue CycleThe full financial lifecycle of a patient encounter, from scheduling, registration, and eligibility through coding, claim submission, payment, and collection of any balance. For an ambulatory surgery center, a well-run revenue cycle determines how much earned revenue is actually captured.
- Revenue Cycle Management (RCM)Revenue Cycle Management (RCM) is the end-to-end financial process of capturing, billing, and collecting payment for healthcare services, from patient registration and coding through claim submission, denial management, and posting. Efficient RCM is central to an ambulatory surgery center's profitability.
- Revenue Cycle Management KPIsKey performance indicators, the quantitative metrics used to measure billing health, such as days in accounts receivable, clean claim rate, denial rate, and net collection rate. Surgery centers track these KPIs to spot bottlenecks and benchmark financial efficiency.
- Revenue IntegrityThe discipline of ensuring charges, coding, and documentation accurately and compliantly reflect services delivered, so reimbursement is correct and defensible. For surgery centers, revenue integrity programs prevent both lost revenue from undercharging and compliance risk from overcharging.
- Revenue LeakageRevenue leakage is the loss of earned income that a provider fails to bill or collect due to coding errors, missed charges, underpayments, or unworked denials. Reducing it is a core focus of ambulatory surgery center revenue cycle teams.
- Revenue Per TreatmentRevenue per treatment is the average income generated by each individual service, procedure, or encounter. For an ambulatory surgery center, tracking it by case type reveals payer mix effects and which procedures drive financial performance.
- Secondary DiagnosisA secondary diagnosis is any condition coexisting with the primary reason for an encounter that affects treatment or management. Accurately coding secondary diagnoses supports appropriate reimbursement, risk adjustment, and complete clinical documentation in the revenue cycle.
- Self-PayPatients without applicable insurance coverage who are personally responsible for the full cost of their care, including the uninsured and those electing not to use benefits. Surgery centers often offer self-pay pricing and upfront discounts to improve collection on these accounts.
- SuperbillAn itemized form listing the diagnoses, procedures, and codes from a patient encounter that a provider uses to generate a claim or that a patient submits for reimbursement. Accurate superbills feed correct coding and clean claims in surgical billing.
- Uncompensated CareHealth services provided for which the facility receives no payment, combining charity care and bad debt. It strains provider finances and factors into hospital cost reporting, community-benefit obligations, and policy debates over coverage gaps.
- UpcodingThe improper practice of assigning billing codes for more expensive or complex services than were actually performed or documented, inflating reimbursement. It constitutes fraud and abuse, exposing surgery centers and providers to audits, recoupments, and penalties under federal compliance laws.
- Usual, Customary, and Reasonable ChargesA method payers use to set allowable reimbursement based on the typical fee a provider charges, what other providers in the area charge, and what is reasonable for the service. It often determines out-of-network payment and patient balances.
- Write-offAn amount a provider removes from a patient's account as uncollectible or contractually disallowed, including payer adjustments, charity care, and bad debt. Surgery centers monitor write-offs closely, since excessive or misclassified write-offs signal lost revenue or billing process weaknesses.