- Clean claim
- A claim with no errors or missing information that passes edits and can be processed and paid on the first submission.
- CMS-1500
- The standard claim form used by physicians and other non-institutional (professional) providers; electronic equivalent is the 837P.
- UB-04
- The institutional claim form (also called the CMS-1450) used by hospitals and facilities; electronic equivalent is the 837I.
- CMS-1450
- Another name for the UB-04 institutional/hospital claim form.
- Rejected claim
- A claim stopped before processing for a format or data error; it is corrected and resubmitted (it never entered the payer's system).
- Denied claim
- A claim the payer processed but refused to pay; it is corrected and formally appealed (not simply resubmitted).
- Suspended (pended) claim
- A claim held by the payer for review or additional information before adjudication.
- Remittance advice (RA)
- The statement a payer sends the provider explaining how each claim line was paid, adjusted, or denied.
- Electronic remittance advice (ERA)
- The electronic (HIPAA 835) version of a remittance advice sent to the provider.
- Explanation of Benefits (EOB)
- The statement a payer sends the patient showing how a claim was processed; it is not a bill.
- CARC
- Claim Adjustment Reason Code — a standardized code on a remittance advice explaining why a payment was adjusted.
- RARC
- Remittance Advice Remark Code — a supplemental code giving additional explanation alongside a CARC.
- Appeal
- A formal request asking a payer to reconsider a denied or underpaid claim, with supporting documentation, within the timely-filing window.
- Timely filing
- The deadline by which a claim or appeal must be submitted; missing it usually forfeits payment.
- Redetermination
- The first level of the Medicare fee-for-service appeals process, performed by the claims contractor.
- Clearinghouse
- A service that receives electronic claims, validates and reformats them, and routes them to the correct payer.
- 837P
- The electronic claim transaction for professional (physician) services — the electronic CMS-1500.
- 837I
- The electronic claim transaction for institutional (facility) services — the electronic UB-04.
- Block 21 (CMS-1500)
- The field on the CMS-1500 where ICD-10-CM diagnosis codes are entered (up to 12).
- Block 24D (CMS-1500)
- The field where the CPT/HCPCS procedure code and any modifiers are entered.
- Diagnosis pointer (24E)
- The CMS-1500 block 24E entry that links each service line to its supporting diagnosis in block 21.
- Block 33 (CMS-1500)
- The field for the billing provider's name, address, and NPI.
- Fee-for-service
- A reimbursement model paying the provider for each individual service rendered.
- Capitation
- A reimbursement model paying the provider a fixed amount per member per month regardless of services used.
- Prospective payment system
- A model paying a predetermined amount per case or service group, such as Medicare's DRGs and APCs.
- DRG
- Diagnosis-Related Group — the inpatient classification that pays a fixed amount per admission.
- APC
- Ambulatory Payment Classification — the unit of payment for hospital outpatient services under OPPS.
- Allowed amount
- The maximum a payer will pay for a covered service; the contracted or fee-schedule rate.
- Write-off
- The contractual adjustment a provider must remove from the bill — the difference between the charge and the allowed amount.
- Balance billing
- Billing the patient for the difference between the provider's charge and the payer's allowed amount; often prohibited for in-network/Medicare.
- Charge capture
- The process of recording the services and items provided so they can be billed.
- Claim scrubber
- Software that checks a claim for errors and edits before submission to produce a clean claim.
- Accounts receivable (A/R)
- The money owed to a provider for services billed but not yet paid.
- Aging report
- A report grouping outstanding A/R by how long it has been unpaid (e.g., 0-30, 31-60 days).
- Day sheet
- A daily record of charges, payments, and adjustments for a provider's patients.
- Superbill
- An itemized form listing the services and diagnoses for an encounter, used to generate the claim.
- EDI
- Electronic Data Interchange — the electronic exchange of claim and remittance data between providers and payers.
- Crossover claim
- A claim automatically forwarded from Medicare to a secondary payer (e.g., Medigap) after Medicare pays.
- Coordination of benefits (claim)
- Filing claims in the correct primary-then-secondary order when a patient has more than one plan.
- Downcoding
- A payer reducing a code to a lower level because documentation or the claim does not support the level billed.
- FDCPA
- The Fair Debt Collection Practices Act, which governs how patient balances may be collected.
- Collection agency
- A third party engaged to collect overdue patient balances under fair-debt rules.
- Patient statement
- The bill sent to a patient showing the balance due after insurance has paid.
- Adjudication
- The payer's process of reviewing a claim and deciding payment, adjustment, or denial.
- Reimbursement
- The payment a provider receives from a payer or patient for services rendered.
- ICD-10-CM
- The U.S. code set for reporting diagnoses and the reasons for an encounter, used in all settings.
- CPT
- Current Procedural Terminology — the AMA code set for physician and outpatient procedures and services.
- HCPCS Level II
- Codes for supplies, drugs, equipment, and services not covered by CPT.
- Modifier
- A two-character CPT/HCPCS addition giving detail about a service (bilateral, distinct, repeat); can change payment.
- Medical necessity
- The principle that a service must be reasonable and necessary; the diagnosis must support the procedure billed.
- NCCI edits
- National Correct Coding Initiative edits — automated checks that block improper code pairs and unbundling.
- Unbundling
- Reporting components of a service separately to get higher payment when one combined code applies — non-compliant.
- Upcoding
- Assigning a higher-level or more expensive code than the documentation supports — fraud.
- Alphabetic Index
- The part of the ICD-10-CM book where the coder first locates the main term for a condition.
- Tabular List
- The part of the ICD-10-CM book where the coder verifies the code and reads its instructional notes.
- Excludes1 note
- An ICD-10-CM convention meaning the two conditions are never coded together.
- Excludes2 note
- An ICD-10-CM convention meaning the condition is not included here but both may be coded if present.
- Code first note
- An ICD-10-CM instruction to sequence an underlying condition before the current code.
- Use additional code
- An ICD-10-CM instruction to add a secondary code to fully describe the condition.
- Seventh character
- An ICD-10-CM character required by some categories (e.g., to show the encounter type for an injury).
- Placeholder X
- The ICD-10-CM 'X' used to fill empty character positions so a required 7th character lands correctly.
- NEC
- Not Elsewhere Classifiable — used when a specific code does not exist for a documented condition.
- NOS
- Not Otherwise Specified — the equivalent of 'unspecified' when documentation lacks detail.
- Laterality
- ICD-10-CM detail specifying right, left, or bilateral for a paired body part.
- E/M codes
- Evaluation and Management CPT codes used to report office and other patient visits.
- CPT Category I
- The main CPT codes for widely used procedures and services (five digits).
- CPT Category II
- Optional CPT tracking codes for performance measurement.
- CPT Category III
- Temporary CPT codes for emerging technologies, services, and procedures.
- Modifier 25
- A significant, separately identifiable E/M service by the same provider on the same day as a procedure.
- Modifier 50
- Indicates a bilateral procedure (performed on both sides).
- Modifier 59
- A distinct procedural service, separate from another service performed the same day.
- Bundling
- Combining related services into a single code, as required by NCCI edits.
- Principal diagnosis
- The condition established after study to be chiefly responsible for an inpatient admission.
- First-listed diagnosis
- In outpatient coding, the main reason for the encounter, sequenced first.
- Sequencing
- Listing codes in the correct order — the principal/first-listed diagnosis first.
- Encounter for examination
- An ICD-10-CM code used when the reason for the visit is a routine exam, not a complaint.
- Signs and symptoms
- Codes assigned when no definitive diagnosis is documented for an outpatient encounter.
- Diagnosis-procedure linkage
- Connecting each procedure code to the diagnosis that justifies it on the claim.
- Abstracting
- Extracting the diagnoses, procedures, and data needed for coding from the health record.
- Uncertain diagnosis (outpatient)
- 'Probable/suspected' conditions are NOT coded for outpatient encounters; code the documented signs/symptoms.
- Chief complaint
- The patient's stated reason for the visit, in their own words.
- Coordination of benefits (COB)
- The rules that determine which plan pays first when a patient has more than one insurance plan.
- Birthday rule
- For a dependent child with two plans, the parent whose birthday falls earlier in the year is primary.
- Primary insurance
- The plan that pays first on a claim before any other coverage.
- Secondary insurance
- The plan that pays after the primary, often covering remaining balances.
- HMO
- Health Maintenance Organization — managed care requiring in-network providers and usually PCP referrals.
- PPO
- Preferred Provider Organization — managed care allowing out-of-network care without a referral at higher cost.
- EPO
- Exclusive Provider Organization — covers only in-network care but typically without referrals.
- POS plan
- Point-of-Service plan — combines HMO and PPO features; referrals for some out-of-network care.
- Indemnity plan
- A fee-for-service plan letting the patient see any provider, usually with higher out-of-pocket cost.
- Medicare
- The federal program for people 65+ and certain others: Parts A, B, C, and D.
- Medicare Part A
- Covers inpatient hospital, skilled nursing, and hospice care.
- Medicare Part B
- Covers physician services, outpatient care, and durable medical equipment.
- Medicare Part C
- Medicare Advantage — Parts A and B (and often D) delivered through private plans.
- Medicare Part D
- Covers prescription drugs through private plans.
- Medigap
- A private supplemental policy covering deductibles and coinsurance left by Medicare A and B.
- Medicaid
- The joint federal-state program for low-income individuals; generally the payer of last resort.
- TRICARE
- The federal health program for active-duty and retired military members and their families.
- CHIP
- The Children's Health Insurance Program for children in families above Medicaid limits.
- Workers' compensation
- Insurance covering work-related injuries and illness; a liability/third-party payer.
- Assignment of Benefits (AOB)
- The patient's authorization for the payer to pay the provider directly.
- Referral
- A primary care physician's authorization for a patient to see a specialist (common in HMOs).
- Precertification
- Confirming that a service is covered by the payer before it is provided.
- Preauthorization (prior auth)
- Payer approval required before a service or drug is provided.
- Predetermination
- An estimate of what the payer will cover for a planned service before it is done.
- Eligibility verification
- Confirming a patient's active coverage and benefits before a visit.
- Copayment
- A fixed dollar amount a patient pays for a covered service at the time of care.
- Deductible
- The amount a patient pays out of pocket each year before the plan begins to pay.
- Coinsurance
- The percentage of a covered service's cost the patient pays after the deductible.
- Out-of-pocket maximum
- The annual cap after which the plan pays 100% of covered services.
- Stop-loss maximum
- A limit on patient out-of-pocket spending after which the plan pays in full.
- Premium
- The amount paid (often monthly) to maintain insurance coverage.
- Self-pay patient
- A patient without insurance who is responsible for the full cost of care.
- Advance Beneficiary Notice (ABN)
- CMS-R-131 notice telling a Medicare patient a service may be denied and they may owe for it.
- Out-of-network
- A provider not contracted with the patient's plan, usually paid at a lower rate or not at all.
- Participating provider
- A provider contracted with a payer, agreeing to its allowed amounts.
- Insurance card
- Documentation showing the member's plan, ID, group number, and payer contact for verification.
- Beneficiary
- The person covered by an insurance plan and entitled to its benefits.
- Guarantor
- The person responsible for paying a patient's bill (may differ from the patient).
- Revenue cycle
- The financial process tracking a patient encounter from scheduling through coding, billing, payment, and collections.
- Front-end (revenue cycle)
- Pre-service tasks: scheduling, registration, eligibility verification, and authorizations.
- Back-end (revenue cycle)
- Post-service tasks: claim submission, payment posting, denials, appeals, and collections.
- HIPAA
- The Health Insurance Portability and Accountability Act, protecting health information via Privacy and Security Rules.
- PHI
- Protected Health Information — individually identifiable health information protected under HIPAA.
- Privacy Rule
- The HIPAA rule governing the use and disclosure of protected health information.
- Security Rule
- The HIPAA rule protecting electronic protected health information (ePHI).
- Minimum necessary
- The HIPAA principle of using or disclosing only the least PHI needed for a purpose.
- TPO
- Treatment, Payment, and health-care Operations — disclosures permitted without separate authorization.
- HITECH Act
- The law that strengthened HIPAA enforcement and added breach-notification requirements.
- Breach notification
- The HITECH requirement to notify individuals and HHS after a breach of unsecured PHI.
- Business associate
- A vendor that handles PHI for a covered entity and must comply with HIPAA.
- Fraud
- Knowingly and intentionally submitting false claims for payment — e.g., billing for services not rendered.
- Abuse
- Improper billing practices causing unnecessary cost, without proven intent to deceive.
- False Claims Act
- The federal law imposing penalties for submitting false claims to the government.
- Stark Law
- The law prohibiting physician self-referral for certain services to entities they have a financial interest in.
- Anti-Kickback Statute
- The law prohibiting payment to induce referrals for services paid by federal health programs.
- OIG
- Office of Inspector General — the HHS office that investigates fraud, waste, and abuse.
- Compliance plan
- A formal program to prevent, detect, and correct fraud, abuse, and billing errors.
- Provider Self-Disclosure Protocol
- The OIG process letting providers voluntarily report and resolve potential fraud or abuse.
- RAC
- Recovery Audit Contractor — a CMS contractor that reviews claims to recover improper Medicare payments.
- ZPIC
- Zone Program Integrity Contractor — a CMS contractor that investigates potential Medicare fraud.
- Informed consent
- A patient's agreement to a treatment after being told its risks, benefits, and alternatives.
- Implied consent
- Consent inferred from a patient's actions or circumstances (e.g., an emergency).
- Audit
- A review of claims and documentation to verify accuracy and compliance.
- Fair Debt Collection Practices Act
- The federal law regulating how debts, including patient balances, may be collected.
- Authorization (HIPAA)
- A patient's signed permission to use or disclose PHI for purposes beyond TPO.
- Covered entity
- A health plan, clearinghouse, or provider that transmits health information electronically and must follow HIPAA.
- Indicators of fraud
- Patterns such as duplicate billing, services not rendered, or upcoding that suggest fraud.
- Notice of Privacy Practices
- The document informing patients how their PHI may be used and disclosed.
- Dirty claim
- A claim with errors or missing information that cannot be processed and is rejected or returned.
- Claim attachment
- Supporting documentation (e.g., operative notes) submitted with a claim when required.
- National Provider Identifier (NPI)
- A unique 10-digit number identifying a health-care provider on claims.
- Tax Identification Number (TIN)
- The employer or provider identification number used for billing and tax reporting.
- Place of service (POS) code
- A code on the CMS-1500 indicating where a service was rendered (e.g., 11 = office).
- Revenue code (UB-04)
- A code on the UB-04 identifying the type of service or department (e.g., room, pharmacy).
- Condition code (UB-04)
- A UB-04 code describing a condition affecting payer processing of the claim.
- Value code (UB-04)
- A UB-04 code reporting amounts or values necessary to process the institutional claim.
- Occurrence code (UB-04)
- A UB-04 code reporting a significant event and date affecting the claim.
- Type of bill (UB-04)
- A four-digit UB-04 field identifying the facility type and bill classification.
- Posting payments
- Recording payer and patient payments and adjustments against the patient's account.
- Contractual adjustment
- The amount a participating provider writes off per the payer contract.
- Bad debt
- A patient balance deemed uncollectible after collection efforts.
- Refund
- Money returned to a patient or payer after an overpayment is identified.
- Overpayment
- Payment exceeding the amount due; must be refunded or applied appropriately.
- Reconsideration
- The second level of the Medicare appeals process, performed by a Qualified Independent Contractor.
- Administrative Law Judge (ALJ)
- The third level of the Medicare appeals process, a hearing before an ALJ.
- Medicare Administrative Contractor (MAC)
- A private contractor that processes Medicare claims for a region.
- Electronic claim
- A claim submitted electronically (837) rather than on paper.
- Paper claim
- A claim submitted on a physical form (CMS-1500 or UB-04).
- Batch (claims)
- A group of claims submitted together to a clearinghouse or payer.
- Acknowledgment report
- A clearinghouse or payer report confirming whether claims were accepted or rejected.
- Days in A/R
- A metric of how long, on average, it takes to collect payment after billing.
- Collection ratio
- The percentage of billed charges actually collected by the practice.
- Capitation payment
- A set per-member-per-month payment under a managed-care contract.
- Adjustment
- A change to a charge or payment, such as a write-off or correction.
- Patient ledger
- A record of all charges, payments, and adjustments for a single patient.
- Claim status inquiry
- An electronic request (276/277) asking a payer the status of a submitted claim.
- Resubmission
- Sending a corrected rejected claim back to the payer for processing.
- Underpayment
- A payer payment that is less than the contracted allowed amount.
- ICD-10-CM convention
- A rule (abbreviation, punctuation, symbol, or note) governing correct code assignment.
- And (ICD-10-CM)
- In a code title, 'and' is interpreted as 'and/or'.
- With (ICD-10-CM)
- In the index and tabular, 'with' means associated or due to, and links the conditions.
- Default code
- The ICD-10-CM code listed next to the main term, used when no further detail is documented.
- Etiology/manifestation
- A coding convention requiring the underlying cause to be sequenced before the manifestation.
- Combination code
- A single ICD-10-CM code reporting two diagnoses, or a diagnosis with a complication.
- Add-on code (CPT)
- A CPT code reported with a primary procedure code, never alone.
- Unlisted procedure code
- A CPT code for a service with no specific code, requiring a report.
- Global surgical package
- A CPT concept bundling pre-, intra-, and post-operative care into the surgery code.
- Bundled service
- A service whose payment is included in another service and not billed separately.
- Modifier 26
- Professional component — the physician's interpretation portion of a service.
- Modifier TC
- Technical component — the equipment/facility portion of a service.
- Modifier 51
- Multiple procedures performed at the same session.
- Modifier 76
- Repeat procedure or service by the same physician.
- Modifier GA
- An ABN is on file for a service expected to be denied by Medicare.
- HCPCS J-code
- A HCPCS Level II code reporting injectable and other drugs.
- HCPCS E-code
- A HCPCS Level II code reporting durable medical equipment.
- Z code (ICD-10-CM)
- A code for encounters with circumstances other than disease or injury (e.g., screening).
- External cause code
- An ICD-10-CM code describing how an injury occurred; never sequenced first.
- Acute vs chronic
- When both are documented and indexed separately, code both, sequencing acute first.
- Coding from the index alone
- An error — the index must be confirmed in the Tabular List before coding.
- Specificity
- Using the most precise code the documentation supports (e.g., full laterality and detail).
- Comorbidity
- A coexisting condition that affects patient care and may be coded as secondary.
- Encoder
- Software that helps a coder find and assign correct codes.
- Local Coverage Determination (LCD)
- A MAC's policy on whether a service is covered in its region.
- National Coverage Determination (NCD)
- A nationwide Medicare policy on whether and when a service is covered.
- Medically Unlikely Edit (MUE)
- An NCCI edit capping the units of a service allowed per patient per day.
- Coding compliance
- Assigning only codes supported by documentation, following official guidelines.
- Group number
- The identifier on an insurance card linking the member to an employer or plan group.
- Subscriber
- The primary policyholder under whom dependents are covered.
- Dependent
- A spouse or child covered under the subscriber's plan.
- Effective date
- The date a patient's insurance coverage begins.
- Termination date
- The date a patient's insurance coverage ends.
- Open enrollment
- The period when individuals may enroll in or change insurance plans.
- Formulary
- A payer's list of covered prescription drugs.
- Capitated plan
- A plan paying providers a fixed amount per member regardless of services used.
- Gatekeeper
- The primary care physician in an HMO who must authorize specialist care.
- Allowable charge
- The maximum amount a plan considers payable for a covered service.
- Nonparticipating provider
- A provider not contracted with a payer; may balance-bill where allowed.
- Medicaid as last resort
- Medicaid pays only after all other available coverage has paid.
- Dual eligible
- A patient covered by both Medicare and Medicaid.
- Tertiary insurance
- A third plan that pays after primary and secondary coverage.
- Dependent rule
- COB rules determining how a child's coverage is ordered between parents' plans.
- Verification of benefits
- Confirming what services a plan covers and the patient's cost share.
- Prior authorization number
- The approval number a payer issues that must appear on the claim.
- Medicare Summary Notice (MSN)
- The quarterly statement Medicare sends beneficiaries listing claims and payments.
- CHAMPVA
- A federal health program for families of veterans with service-connected disabilities.
- Catastrophic plan
- A high-deductible plan covering essential benefits after a large out-of-pocket amount.
- Middle (revenue cycle)
- The service phase: clinical documentation and assigning diagnosis and procedure codes.
- Patient registration
- Collecting demographic and insurance information at the start of an encounter.
- Demographic information
- Patient identity data (name, DOB, address) collected at registration.
- Encounter form
- A document capturing the services and diagnoses for a visit (similar to a superbill).
- Designated record set
- The records a covered entity uses to make decisions about an individual under HIPAA.
- De-identified information
- Health data with identifiers removed so it is no longer PHI.
- Disclosure
- Releasing PHI outside the entity that holds it.
- Use (of PHI)
- Sharing or handling PHI within the entity that holds it.
- Right to access
- A patient's HIPAA right to inspect and obtain a copy of their health information.
- Accounting of disclosures
- A patient's HIPAA right to a list of certain disclosures of their PHI.
- Civil monetary penalty
- A fine imposed for HIPAA or False Claims Act violations.
- Qui tam
- A False Claims Act provision letting a whistleblower sue on the government's behalf.
- Internal audit
- A self-review of coding and billing accuracy within the organization.
- External audit
- A review of claims by an outside payer or contractor (e.g., a RAC).
- Corporate Integrity Agreement
- An OIG agreement a provider follows after resolving fraud allegations.
- Code of conduct
- The ethical standards staff follow as part of a compliance program.
- Sentinel event
- A serious, unexpected occurrence that triggers review and possible reporting.
- Patient confidentiality
- The duty to protect a patient's health information from unauthorized disclosure.