AMT CMAS study materials
AMT CMAS study resources

AMT CMAS key terms

AMT CMAS · Get comfortable with the vocabulary.

Copayment

A fixed dollar amount a patient pays at the time of service, such as $25 for an office visit, with the insurance plan covering the remainder of the allowed charge.

Related: Coinsurance, Deductible, Allowed Amount
Coinsurance

The percentage of allowed charges a patient pays after meeting the deductible, for example 20 percent, while the plan pays the other share.

Related: Copayment, Deductible, Allowed Amount
Deductible

The amount a patient must pay out of pocket for covered services before the health plan begins paying its share of the cost.

Related: Coinsurance, Copayment
Allowed Amount

The maximum dollar figure a payer will recognize as payment for a given service under its contract, which serves as the basis for calculating plan and patient responsibility.

Related: Copayment, Explanation of Benefits, Contractual Adjustment
Explanation of Benefits (EOB)

A statement from the insurer showing services billed, the allowed amount, what the plan paid, and what the patient owes, but which is not itself a bill.

Related: Remittance Advice, Allowed Amount
Remittance Advice (RA)

An electronic or paper report sent to the provider with payment, listing each claim, the amount paid, and any adjustment or denial reason codes.

Related: Explanation of Benefits (EOB), Claim Denial, Clean Claim
Clean Claim

A claim submitted with all required data elements complete and accurate, allowing the payer to process it without requesting additional information or correction.

Related: Claim Denial, Remittance Advice (RA)
Claim Denial

A payer's refusal to pay all or part of a submitted claim, often due to missing information, ineligibility, coding problems, or lack of medical necessity.

Related: Appeal, Clean Claim, Remittance Advice (RA)
Appeal

A formal request asking a payer to reconsider a denied or underpaid claim, usually supported by documentation and submitted within a stated deadline.

Related: Claim Denial, Medical Necessity
Medical Necessity

The standard that a service must be reasonable and required for the diagnosis or treatment of a patient's condition to be covered by a payer.

Related: Prior Authorization, Appeal
Prior Authorization

Approval a payer requires before certain services, procedures, or medications are delivered, confirming the plan will cover them if criteria are met.

Related: Medical Necessity, Referral
Referral

A provider's written or electronic direction sending a patient to another provider, often required by managed care plans before specialty care is covered.

Related: Prior Authorization, Participating Provider
Participating Provider

A clinician or facility that has signed a contract with an insurance plan to accept its negotiated rates and follow its rules in exchange for network access.

Related: Allowed Amount, Referral
Coordination of Benefits (COB)

The process that determines which of a patient's multiple insurance plans pays first and how the secondary plan covers remaining balances.

Related: Primary Insurance, Secondary Insurance
Primary Insurance

The health plan that pays a claim first when a patient has more than one source of coverage, before any other plan is billed.

Related: Secondary Insurance, Coordination of Benefits (COB)
Secondary Insurance

A health plan that considers a claim only after the primary plan has paid, covering some or all of the remaining patient responsibility.

Related: Primary Insurance, Coordination of Benefits (COB)
Contractual Adjustment

The difference between a provider's billed charge and the amount the payer contract allows, which the provider writes off and cannot bill to the patient.

Related: Allowed Amount, Write-Off
Write-Off

An amount a practice removes from a patient's account balance because it will not be collected, such as a contractual adjustment or an approved financial hardship.

Related: Contractual Adjustment, Accounts Receivable
Accounts Receivable (A/R)

The total money owed to a medical practice for services already provided, tracked by age to monitor how quickly claims and patient balances are paid.

Related: Write-Off, Aging Report
Aging Report

A report that groups unpaid claims and patient balances by how many days they have been outstanding, helping staff prioritize collection follow-up.

Related: Accounts Receivable (A/R)
Current Procedural Terminology (CPT)

A standardized code set maintained by the American Medical Association that describes medical services and procedures for billing and reporting purposes.

Related: ICD-10-CM, HCPCS Level II, Evaluation and Management (E/M) Code
ICD-10-CM

The code set used in the United States to report diagnoses and reasons for visits on claims, organized by body system and condition.

Related: CPT, Medical Necessity
HCPCS Level II

A national code set used mainly for supplies, drugs, durable medical equipment, and services not described by CPT codes.

Related: CPT, ICD-10-CM
Evaluation and Management (E/M) Code

A CPT code category used to bill office visits and other encounters, selected by documented elements such as history, examination, and medical decision making.

Related: CPT, Medical Decision Making
Medical Decision Making

The complexity of thinking a provider documents about a patient's problems, data reviewed, and risk, used to select some E/M visit levels.

Related: Evaluation and Management (E/M) Code
Upcoding

Billing a service at a higher level or cost than the documentation supports, which is a form of fraud and can lead to payer audits and penalties.

Related: Fraud, Audit, Evaluation and Management (E/M) Code
Fraud

Intentional deception for financial gain in health care, such as billing for services never rendered or knowingly submitting false information to a payer.

Related: Upcoding, Abuse, False Claims Act
Abuse

Practices that are inconsistent with accepted business or medical standards and cause unnecessary cost, even without proof of intentional deception.

Related: Fraud, Upcoding
False Claims Act

A federal law that imposes penalties on persons or entities who knowingly submit false or fraudulent claims to government health programs.

Related: Fraud, Abuse
Health Insurance Portability and Accountability Act (HIPAA)

A federal law that protects the privacy and security of individually identifiable health information and sets rules for its permitted use and disclosure.

Related: Protected Health Information (PHI), Minimum Necessary Rule, Release of Information
Protected Health Information (PHI)

Health information that identifies a patient and relates to care, payment, or health status, and which is safeguarded by federal privacy rules.

Related: HIPAA, Minimum Necessary Rule
Minimum Necessary Rule

The principle that only the least amount of protected health information needed for a task should be accessed, used, or shared.

Related: HIPAA, Protected Health Information (PHI)
Release of Information

A signed patient authorization permitting a practice to disclose specified health information to a named person or organization for a stated purpose.

Related: HIPAA, Protected Health Information (PHI)
Informed Consent

A patient's voluntary agreement to a procedure or treatment after receiving an explanation of its risks, benefits, and alternatives.

Related: Release of Information, Advance Directive
Advance Directive

A legal document in which a patient states wishes about future medical care or names someone to decide, used when the patient cannot speak for themselves.

Related: Informed Consent
Subjective, Objective, Assessment, Plan (SOAP)

A common progress-note format that records the patient's reported symptoms, exam findings, the provider's assessment, and the treatment plan.

Related: Chief Complaint, Progress Note
Chief Complaint

The main reason a patient seeks care, usually stated briefly in the patient's own words at the start of the encounter.

Related: SOAP Note, History of Present Illness
History of Present Illness (HPI)

A narrative description of the current problem, including onset, location, duration, character, aggravating factors, and related symptoms.

Related: Chief Complaint, Review of Systems
Review of Systems (ROS)

A series of questions reviewing symptoms by body system to identify problems the patient may not have mentioned spontaneously.

Related: History of Present Illness (HPI), SOAP Note
Progress Note

A dated entry in the medical record describing a patient's status, care given, and plan during a specific visit or encounter.

Related: SOAP Note, Medical Record
Medical Record

The complete legal collection of a patient's health information, including notes, test results, and correspondence, kept confidential and retained per policy.

Related: Progress Note, Protected Health Information (PHI)
Encounter Form

A document or electronic screen used during a visit to capture the diagnoses, services, and supplies delivered so they can be coded and billed.

Related: Superbill, Charge Capture
Superbill

A routing form listing common diagnoses and services for a specialty, checked by the provider to communicate what should be billed for the visit.

Related: Encounter Form, Charge Capture
Charge Capture

The process of recording every service and supply provided to a patient so that nothing billable is missed or incorrectly reported.

Related: Encounter Form, Superbill
Scheduling Template

A preset pattern of appointment slots that controls visit length and availability for a provider's day.

Related: Encounter Form
Patient Registration

The intake step in which demographic, insurance, and consent information is collected and entered to establish or update a patient's record.

Related: Eligibility Verification, Encounter Form
Eligibility Verification

The process of confirming with a payer that a patient's coverage is active and what benefits apply before services are rendered.

Related: Patient Registration, Prior Authorization
Active Listening

A communication technique in which the listener focuses fully, reflects back what was heard, and asks clarifying questions to confirm understanding.

Related: Therapeutic Communication, Teach-Back Method
Therapeutic Communication

Purposeful verbal and nonverbal interaction that supports a patient's comfort and understanding, using open questions, empathy, and respect.

Related: Active Listening, Teach-Back Method
Teach-Back Method

A technique where the patient explains instructions in their own words so staff can confirm understanding and correct misunderstandings.

Related: Active Listening, Health Literacy
Health Literacy

A person's ability to obtain, understand, and use health information to make appropriate decisions about their care.

Related: Teach-Back Method
Medical Interpreter

A trained professional who conveys spoken communication accurately between a patient with limited English proficiency and the care team.

Related: Health Literacy, Therapeutic Communication
Scope of Practice

The tasks and duties a health worker is legally permitted to perform based on licensure, certification, and state law.

Related: Standard of Care, Professional Boundaries
Standard of Care

The level of care and skill that a reasonably competent professional in the same field would provide under similar circumstances.

Related: Scope of Practice, Negligence
Negligence

A failure to exercise the degree of care a reasonable professional would use, resulting in harm to a patient.

Related: Standard of Care, Malpractice
Malpractice

Professional negligence by a health care provider that causes injury, typically addressed through civil legal action.

Related: Negligence, Standard of Care
Professional Boundaries

The limits that keep the medical relationship focused on the patient's needs, avoiding personal, financial, or romantic entanglements.

Related: Scope of Practice, Confidentiality
Confidentiality

The ethical and legal duty to keep patient information private and share it only with those authorized to receive it.

Related: Protected Health Information (PHI), Professional Boundaries
Medical Assistant Certification

A credential earned by passing a recognized exam and meeting education or experience requirements, demonstrating entry-level competence in the field.

Related: Scope of Practice, Continuing Education
Continuing Education

Ongoing training units that credentialed professionals complete to maintain certification and stay current with changes in practice.

Related: Medical Assistant Certification