Understanding healthcare and insurance terminology can be challenging, especially when faced with so many acronyms and specific definitions. We have created this dedicated glossary to clarify the most common terms used in Medicare, life insurance, and critical illness coverage. By breaking down complex industry language into plain English, this guide aims to give you the clarity and confidence you need to make the right choices for your coverage.
Medicare Insurance Acronyms
ABN — Advance Beneficiary Notice
A notice you get from a provider before you receive a service that Medicare is not expected to pay for. It lists the estimated cost so you can decide if you want to proceed and pay out of pocket.
ACO — Accountable Care Organization
A group of doctors, hospitals, and other healthcare providers who work together to give coordinated high-quality care to Medicare patients.
AEP — Annual Enrollment Period
The yearly window (October 15 – December 7) when you can join, switch, or drop a Medicare Advantage or Prescription Drug Plan.
ANOC — Annual Notice of Change
A letter sent to you by your Medicare plan every September. It details any changes in coverage, costs, or service area that will be effective starting January 1 of the coming year.
CMS — Centers for Medicare & Medicaid Services
The federal agency that runs the Medicare program. They set the rules and regulations that insurance companies and providers must follow.
DME — Durable Medical Equipment
Medical equipment ordered by a doctor for use in the home, such as walkers, wheelchairs, or hospital beds.
ESRD — End-Stage Renal Disease
Permanent kidney failure that requires dialysis or a kidney transplant. Individuals with this condition have special eligibility rules for Medicare.
FPL — Federal Poverty Level
A measure of income issued every year by the government. These numbers are used to determine if you qualify for financial assistance programs like the Low-Income Subsidy or Medicare Savings Programs.
HMO — Health Maintenance Organization
A type of Medicare Advantage plan that usually limits coverage to care from doctors who work for or contract with the HMO. It generally won’t cover out-of-network care except in an emergency.
IEP — Initial Enrollment Period
The seven-month period when you are first eligible for Medicare. It usually begins three months before you turn 65, includes your birthday month, and ends three months later.
IRMAA — Income-Related Monthly Adjustment Amount
An extra charge added to your Medicare Part B and Part D premiums if your income is above a certain level. This amount is determined by your tax returns from two years prior.
LEP — Late Enrollment Penalty
A lifetime penalty added to your monthly premium if you do not sign up for Medicare Part B or Part D when you are first eligible and do not have other creditable coverage.
LIS — Low-Income Subsidy (Extra Help)
A federal program that helps people with limited income and resources pay for Medicare Part D prescription drug costs.
MA / MAPD — Medicare Advantage / Medicare Advantage Prescription Drug
MA stands for Medicare Advantage (Part C), a private alternative to Original Medicare. MAPD is a Medicare Advantage plan that also includes prescription drug coverage.
MSA — Medical Savings Account
A type of Medicare Advantage plan that combines a high-deductible health plan with a bank account. The plan deposits money into the account that you can use to pay for your healthcare services.
MSP — Medicare Savings Programs
State-run programs that help people with limited income and resources pay for some or all of their Medicare premiums, deductibles, and coinsurance.
OEP — Open Enrollment Period
Specific to Medicare Advantage, this period (January 1 – March 31) allows individuals already enrolled in a Medicare Advantage plan to switch to a different one or return to Original Medicare.
PDP — Prescription Drug Plan
A standalone plan (Part D) offered by private insurance companies to help cover the cost of prescription medications.
PPO — Preferred Provider Organization
A type of Medicare Advantage plan with a network of preferred doctors and hospitals. You can see providers outside the network, but it will usually cost more.
SEP — Special Enrollment Period
A time outside the standard enrollment periods when you can sign up for Medicare or change plans. This is triggered by specific life events, such as moving or retiring, and losing employer coverage.
SHIP — State Health Insurance Assistance Program
A state program that provides free local health coverage counseling to people with Medicare.
SNP — Special Needs Plan
A type of Medicare Advantage plan limited to people with specific diseases or characteristics, such as those living in nursing homes or those eligible for both Medicare and Medicaid.
TrOOP — True Out-Of-Pocket Costs
The amount you pay for covered Part D drugs that counts toward your drug plan’s out-of-pocket threshold. This determines when you exit the “coverage gap” (donut hole) and enter the catastrophic coverage phase.
Life Insurance Acronyms
ADB — Accelerated Death Benefit
A feature that allows you to receive a portion of your life insurance payout while you are still alive if you are diagnosed with a terminal illness.
AD&D — Accidental Death and Dismemberment
A policy or rider that pays a benefit if the insured dies or loses a limb/eyesight due to an accident. It typically does not cover death from natural causes or illness.
APL — Automatic Premium Loan
A provision that allows the insurance company to automatically take a loan from your policy’s cash value to pay your premium if you forget to pay it, preventing the policy from lapsing.
APS — Attending Physician Statement
A report ordered by an insurance company from your doctor. It provides details on your medical history to help the insurer decide whether to approve your application.
COI — Cost of Insurance
The actual cost required to keep a life insurance policy active. In universal life policies, this is the amount deducted monthly from the cash value.
CV — Cash Value
The savings component within a permanent life insurance policy (like Whole Life or Universal Life). This money grows over time and can often be borrowed against or withdrawn.
DB — Death Benefit
The amount of money the insurance company pays to the beneficiary when the insured person dies.
DI — Disability Income Rider
An optional add-on to a life insurance policy that provides you with a monthly income if you become totally disabled and cannot work.
EOI — Evidence of Insurability
Proof of your physical condition is usually required when you apply for life insurance. This can include medical records, questionnaires, and medical exams.
GIO — Guaranteed Insurability Option
A rider that allows you to purchase additional life insurance coverage at specific future dates or life events (like marriage or having a child) without having to take another medical exam.
IUL — Indexed Universal Life
A type of permanent life insurance where the cash value growth is tied to a stock market index (like the S&P 500), but with protection against market losses.
MEC — Modified Endowment Contract
A life insurance policy where the premiums paid have exceeded federal tax limits. Once a policy becomes a MEC, withdrawals are taxed less favorably than standard life insurance cash value withdrawals.
MIB — Medical Information Bureau
A non-profit database used by insurance companies to exchange confidential medical information about applicants to prevent fraud and assess risk.
RPU — Reduced Paid-Up Insurance
A non-forfeiture option where you stop paying premiums and use the existing cash value to buy a smaller, fully paid-for policy that remains in force for the rest of your life.
UL — Universal Life
A type of permanent life insurance that offers flexible premiums and a flexible death benefit. It builds cash value based on current interest rates.
WL — Whole Life
A type of permanent life insurance that provides coverage for your entire life. It features fixed premiums, a guaranteed death benefit, and guaranteed cash value growth.
Cancer & Critical Illness Insurance Acronyms
ADL — Activities of Daily Living
Routine activities people do every day without assistance, such as eating, bathing, dressing, toileting, transferring, and continence. The inability to perform these often triggers benefits in critical illness or long-term care policies.
CI — Critical Illness Insurance
A type of insurance that pays a lump sum cash benefit if you are diagnosed with a specific serious illness listed in the policy, such as cancer, heart attack, or stroke.
COBRA — Consolidated Omnibus Budget Reconciliation Act
A federal law that gives workers the right to keep their employer-sponsored health insurance for a limited time after losing their job. This is vital for maintaining coverage during treatment.
DOB — Date of Birth
While simple, this acronym is frequently used in all medical and insurance forms to verify patient identity and age-related eligibility for screenings.
DX — Diagnosis
The identification of the nature of an illness or other problem by examination of the symptoms. A formal “Dx” code is usually required to trigger an insurance payout.
EOB — Explanation of Benefits
A document sent by your insurance company showing what treatments were paid for, what was denied, and the portion of the costs you are responsible for paying.
FMLA — Family and Medical Leave Act
A federal law that entitles eligible employees of covered employers to take unpaid, job-protected leave for specified family and medical reasons, such as a serious health condition.
HDHP — High-Deductible Health Plan
A health insurance plan with lower premiums but higher deductibles. These are often paired with Health Savings Accounts (HSAs) to pay for cancer-related expenses tax-free.
HIPAA — Health Insurance Portability and Accountability Act
A federal law that protects the privacy of your medical records and personal health information. It also gives you rights over your own health data.
HSA — Health Savings Account
A tax-advantaged savings account available to people who have a High-Deductible Health Plan. Funds can be used for medical expenses, including those not covered by insurance.
ICD-10 — International Classification of Diseases
A system used by physicians and insurers to classify and code all diagnoses, symptoms, and procedures. These codes are essential for processing insurance claims.
MOOP — Maximum Out-of-Pocket
The most you will have to pay for covered services in a plan year. After you spend this amount on deductibles, copayments, and coinsurance, your health plan pays 100% of the costs of covered benefits.
OON — Out-of-Network
Refers to doctors or hospitals that do not have a contract with your insurance plan. Going OON for cancer treatment usually costs significantly more or may not be covered at all.
PA — Prior Authorization
A requirement that your doctor get approval from your health insurance plan before you receive a specific service, drug, or surgery to ensure it is covered.
PCP — Primary Care Physician
Your main doctor manages your overall health. In many plans (like HMOs), you must see your PCP to get a referral to a cancer specialist (oncologist).
SNF — Skilled Nursing Facility
A facility that provides 24-hour nursing care and rehabilitation services. Medicare and some critical illness policies may cover short-term stays here for recovery after a hospital stay.