Revenue Cycle and Billing Flashcards

What is the 'revenue cycle' in healthcare, and what are its main components?

Answer: The end-to-end financial process from patient scheduling through payment collection, including registration, coding, billing, claims, posting, and denials management

The revenue cycle encompasses every step of earning and collecting revenue: patient access (scheduling, registration, eligibility), clinical documentation, charge capture, coding, claim submission, payment posting, denial management, and patient balance collections.

What is the difference between ICD-10-CM and ICD-10-PCS codes in medical coding?

Answer: ICD-10-CM codes diagnoses (why); ICD-10-PCS codes inpatient procedures (what was done) — together they drive DRG assignment and inpatient reimbursement

ICD-10-CM (Clinical Modification) classifies diagnoses, symptoms, and reasons for encounter. ICD-10-PCS (Procedure Coding System) classifies inpatient procedures. Together, they are assigned by coders to drive DRG assignment and hospital inpatient payment.

What does CPT (Current Procedural Terminology) code set describe, and who maintains it?

Answer: Medical procedures and services performed by physicians and other providers; maintained by the American Medical Association (AMA)

CPT codes (Level I HCPCS) are maintained by the AMA and describe medical, surgical, and diagnostic services. They are used on professional fee claims (CMS-1500 / 837P) and drive reimbursement for physician and outpatient services.

What is a 'Diagnosis Related Group' (DRG), and how does it determine hospital payment?

Answer: A classification that groups inpatient cases by diagnosis, procedures, and complications into payment categories; hospitals receive a fixed payment per DRG regardless of actual costs

MS-DRGs (Medicare Severity Diagnosis Related Groups) classify inpatient stays by diagnoses, procedures, age, sex, and complications/comorbidities into groups with assigned payment weights. Medicare pays a fixed amount per DRG — incentivizing efficiency.

What is 'charge capture,' and why is it important to revenue cycle integrity?

Answer: The process of documenting all billable services rendered during a patient encounter to ensure complete and accurate claim submission

Charge capture ensures every service performed (procedures, medications, supplies, professional fees) generates a corresponding charge in the EHR/billing system. Missed charges = lost revenue; duplicate charges = overbilling compliance risk.

What is the 'clean claim rate,' and why does it matter for revenue cycle performance?

Answer: The percentage of claims submitted that are accepted and paid without rejection or additional information requests; higher rates mean faster payment and lower rework costs

A clean claim is one that processes through the payer system without rejection or denial on first submission. Industry benchmark is >95% first-pass acceptance. Clean claim rate directly correlates with days in accounts receivable (A/R) and revenue cycle efficiency.

What is a 'remittance advice' (ERA/EOB), and how is it used in revenue cycle?

Answer: A document from the payer detailing which charges were paid, denied, adjusted, or pended — used for payment posting and denial management

Electronic Remittance Advice (ERA / 835 transaction) is the payer's payment response explaining each claim line: amount paid, contractual adjustment, patient responsibility, and denial reason codes. Revenue cycle staff use ERAs for payment posting and denial follow-up.

What is 'medical necessity' in the context of insurance billing?

Answer: The clinical justification that a service is reasonable, necessary, and appropriate for the diagnosis and condition, required by payers as a condition of reimbursement

Payers require that services be medically necessary — appropriate for the documented diagnosis, not experimental, and meeting clinical criteria. Insufficient medical necessity documentation is one of the most common claim denial reasons.

What does 'unbundling' in medical billing refer to, and why is it a compliance risk?

Answer: Separately billing procedure codes that should be billed as a bundled package code, artificially increasing reimbursement — a compliance violation under CCI edits and OIG guidance

Unbundling is fraudulent billing: individually billing procedures that are included in (bundled with) a comprehensive code. CMS's Correct Coding Initiative (CCI) edits are designed to identify and reject unbundled claims. Intentional unbundling is healthcare fraud.

What is the 'accounts receivable (A/R) days' metric in revenue cycle management?

Answer: The average number of days from service delivery to payment receipt; lower is better, with industry benchmark typically <50 days for hospitals

A/R days (Days in A/R) = Total A/R ÷ (Annual Revenue / 365). It measures how quickly the organization converts services into cash. Benchmark: commercial insurers typically <20-30 days; hospital overall <50 days. High A/R days indicate collection problems.

What is a 'denial management' process in the revenue cycle?

Answer: The systematic identification, appeal, correction, and resubmission of denied claims, along with root cause analysis to prevent future denials of the same type

Denial management is a proactive cycle: identify denied claims by type (medical necessity, auth, coding, eligibility), correct and appeal within timely filing limits, and analyze denial patterns to address root causes upstream (documentation, pre-authorization, coding education).

What is 'coordination of benefits' (COB), and when is it important in claims processing?

Answer: When a patient has multiple insurance plans, COB rules determine which pays first (primary) and how secondary insurance processes the remaining balance

When a patient has two or more insurance plans, COB prevents overpayment to providers. The primary insurer pays first according to COB rules (birthday rule for dependents, Medicare vs. commercial primary rules). The secondary insurer covers remaining eligible amounts up to 100% of the provider's charges.

What is a 'charge master' (CDM), and why is it important to hospital revenue cycle?

Answer: The comprehensive catalog of all hospital services with associated charge codes and standard prices, used as the starting point for claim generation

The Chargemaster is the hospital's comprehensive service catalog: every procedure, supply, medication, and service has a unique charge code and list price. The CDM is the foundation of claim generation — charges trigger from the CDM when services are performed.

What is 'upcoding,' and why does it constitute healthcare fraud?

Answer: Reporting a higher-level service than was actually performed to receive higher reimbursement — violates False Claims Act and anti-fraud laws

Upcoding intentionally assigns a more expensive code than the documented service supports to increase reimbursement. It violates the False Claims Act, exposing organizations to qui tam lawsuits, federal investigations, exclusion from Medicare/Medicaid, and civil monetary penalties.

What is the 'Explanation of Benefits' (EOB) that patients receive?

Answer: A statement from the insurer explaining what was billed, what was paid to the provider, and what the patient owes (copay, deductible, coinsurance) — not a bill

An EOB is an insurer's notification to the patient after a claim is processed. It shows: services billed, amount allowed, insurer payment, contractual adjustment, and patient responsibility. It says 'This is NOT a bill' — the provider bills the patient separately for the patient responsibility amount.

What is 'timely filing' in medical billing, and what happens when it is missed?

Answer: The payer's deadline for submitting initial claims (e.g., Medicare 12 months, commercial often 90-180 days); claims submitted after the deadline are denied and typically cannot be appealed

Each payer has a timely filing limit from the date of service. Medicare requires initial claims within 12 months; commercial payers often 90-180 days (varying by contract). Late filing denials are generally not appealable — the revenue is permanently lost.

What is 'value-based reimbursement,' and how does it differ from fee-for-service?

Answer: Reimbursement based on quality outcomes and cost efficiency rather than volume of services; providers are rewarded for keeping patients healthy, not just for performing more procedures

Fee-for-service pays per unit of service regardless of outcome. Value-based care (ACOs, shared savings, bundled payments, capitation) ties payment to quality metrics, cost efficiency, and patient outcomes. It incentivizes preventive care, care coordination, and avoiding unnecessary procedures.

What is a 'payer contract,' and how does it affect hospital revenue?

Answer: A negotiated agreement between the hospital and insurer that defines contracted payment rates, covered services, billing requirements, and dispute resolution — directly determines reimbursement for insured patients

Payer contracts establish the negotiated rates for each service. The contracted rate (often a percentage of charges or a fee schedule) is what the payer will pay. The difference between billed charges and contracted rate is the contractual adjustment — not revenue. Contract terms directly determine net revenue.

What is 'self-pay' management in the revenue cycle?

Answer: The process of collecting balances from uninsured patients or patient responsibility (copays, deductibles) after insurance — including charity care screening, payment plans, and collection activities

Self-pay management addresses both uninsured patients (full balance) and insured patients' out-of-pocket responsibility. It includes: upfront collection at point of service, screening for charity care eligibility, setting up payment plans, and managing collections.

What does 'modifier' mean in CPT coding, and give an example?

Answer: A 2-digit code appended to a CPT code to provide additional information about the service without changing the code definition (e.g., -25: significant, separately identifiable E&M on same day as procedure)

CPT modifiers provide additional information: -25 (separate E&M same day as procedure), -51 (multiple procedures), -59 (distinct procedural service), -26 (professional component), -TC (technical component), -LT/-RT (left/right side). They affect billing but not the core procedure definition.