

Principal writer, insurance and medicare advisory


Medicare Insurance Agent, Creighton university


Managing editor
- Written on February 17, 2025
- Updated February 17, 2025
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Medicare is a vital healthcare program in the United States that provides essential coverage to eligible individuals, primarily those aged 65 and older. One of the foundational components of Medicare is Original Medicare, which includes Medicare Part A (hospital insurance) and Medicare Part B (medical insurance). In this comprehensive guide, we will delve into Original Medicare, explaining its purpose, coverage details, enrollment information, costs, and considerations for beneficiaries.
The Purpose of Original Medicare
Original Medicare, consisting of Part A and Part B, serves several crucial purposes within the broader Medicare program:
- Hospital Care Coverage (Part A): Medicare Part A provides coverage for inpatient hospital care, including stays in acute care hospitals, critical access hospitals, and long-term care hospitals. This coverage includes services such as semi-private rooms, nursing services, meals, medications, and necessary supplies.
- Medical Services Coverage (Part B): Medicare Part B covers a wide range of medical services, including doctor’s visits, preventive care, outpatient care, medical supplies, and medically necessary services and equipment. It plays a vital role in ensuring beneficiaries have access to physician services and necessary medical treatments.
- Access to a Nationwide Network: Original Medicare allows beneficiaries to receive healthcare services from a wide range of providers and healthcare facilities across the country, giving them flexibility in choosing their healthcare providers.
Medicare Part A (Hospital Insurance)
Medicare Part A is primarily designed to cover inpatient hospital care and related services. Here are the key aspects of Medicare Part A:
- Inpatient Hospital Care:
- Part A covers inpatient hospital stays, including semi-private rooms, meals, nursing services, and necessary supplies.
- Beneficiaries are responsible for paying a deductible for each benefit period. In 2023, the Part A deductible for hospital stays is $1,556 per benefit period.
- The length of coverage in a hospital may vary, but generally, Medicare covers up to 90 days of inpatient care per benefit period.
- After 90 days, beneficiaries have an additional 60 “lifetime reserve days” that can be used, with an increased coinsurance payment.
- Skilled Nursing Facility (SNF) Care:
- Following a qualifying hospital stay, beneficiaries may be eligible for SNF care coverage under Medicare Part A.
- Medicare covers the full cost of skilled nursing facility care for the first 20 days of each benefit period.
- For days 21 through 100, beneficiaries are responsible for a daily coinsurance amount.
- Hospice Care:
- Medicare Part A provides comprehensive coverage for hospice care, including pain management, counseling, medical equipment, and support for patients and their families.
- Hospice care can be received in various settings, including a hospice facility, hospital, nursing home, or the beneficiary’s home.
- Home Healthcare Services:
- In certain circumstances, Medicare Part A covers home healthcare services, such as skilled nursing care, physical therapy, speech-language pathology, and occupational therapy.
- Beneficiaries must meet specific criteria to qualify for home healthcare services under Medicare Part A.
Medicare Part B (Medical Insurance)
Medicare Part B complements Part A by covering a broad range of medical services and supplies necessary for the diagnosis and treatment of medical conditions. Here are the key aspects of Medicare Part B:
- Doctor’s Visits:
- Part B covers visits to healthcare providers, including doctors, specialists, and other healthcare professionals.
- Beneficiaries typically pay a coinsurance or copayment for these services, with Medicare covering the rest.
- Preventive Care:
- Part B includes coverage for a variety of preventive services, such as screenings, vaccinations, and annual wellness visits.
- Many preventive services are provided at no cost to beneficiaries.
- Outpatient Care:
- Part B covers outpatient care, such as diagnostic tests, X-rays, and laboratory services.
- Durable medical equipment (DME), such as wheelchairs and oxygen equipment, is also covered under Part B.
- Ambulance Services:
- Medicare Part B provides coverage for medically necessary ambulance transportation to a hospital or healthcare facility.
- Medical Supplies:
- Beneficiaries can receive coverage for necessary medical supplies, such as diabetes testing supplies and durable medical equipment.
- Physician Services:
- Part B covers physician services, including office visits, consultations, and surgical procedures performed in an outpatient setting.
Enrollment in Original Medicare
Enrollment in Original Medicare is typically automatic for some individuals and requires manual enrollment for others. Here’s how enrollment works for both Medicare Part A and Part B:
- Automatic Enrollment:
- If you are already receiving Social Security or Railroad Retirement Board (RRB) benefits when you turn 65, you will be automatically enrolled in both Medicare Part A and Part B.
- If you are eligible for Medicare due to a disability, you will be automatically enrolled in Medicare Part A and Part B after receiving disability benefits for 24 months.
- Manual Enrollment:
- If you are not automatically enrolled in Original Medicare, you can manually enroll during specific enrollment periods, including the Initial Enrollment Period (IEP), the General Enrollment Period (GEP), or during a Special Enrollment Period (SEP).
- The IEP for Original Medicare typically starts three months before your 65th birthday month and lasts for seven months. It includes the three months before your birthday month, your birthday month, and the three months following it.
- The General Enrollment Period (GEP) for Original Medicare occurs annually from January 1 to March 31. During this time, individuals who did not enroll during their IEP can sign up, but there may be late enrollment penalties.
- Late Enrollment Penalties:
- If you do not enroll in Original Medicare when you are first eligible and do not qualify for a Special Enrollment Period (SEP), you may incur late enrollment penalties. These penalties can result in higher premiums for Part B coverage.
- It’s crucial to be aware of enrollment deadlines and eligibility criteria to avoid these penalties.
Costs Associated with Original Medicare
While Original Medicare provides essential healthcare coverage, beneficiaries should be aware of the costs associated with both Part A and Part B:
- Medicare Part A Costs:
- Part A is typically premium-free for most beneficiaries, as long as they or their spouse have worked and paid Medicare taxes for at least ten years (40 quarters).
- Beneficiaries may be responsible for a deductible and coinsurance amounts for inpatient hospital stays and skilled nursing facility care, depending on the length of their stay.
- Hospice care and home healthcare services under Part A have limited or no cost-sharing.
- Medicare Part B Costs:
- Part B has a monthly premium, with the amount based on the beneficiary’s income. In 2023, the standard Part B premium is $170.10 per month.
- Beneficiaries are responsible for an annual deductible, which is $233 in 2023.
- After meeting the deductible, beneficiaries typically pay a coinsurance or copayment for Part B services, usually 20% of the Medicare-approved amount.
- Some preventive services under Part B are provided at no cost to beneficiaries.
- Beneficiaries with higher incomes may pay an income-related monthly adjustment amount (IRMAA) in addition to the standard premium.
Considerations for Beneficiaries of Original Medicare
When evaluating Original Medicare, beneficiaries should consider the following factors:
- Supplementary Coverage:
- Some beneficiaries choose to purchase Medicare Supplement Insurance (Medigap) policies to help cover the out-of-pocket costs associated with Original Medicare, such as deductibles and coinsurance.
- Prescription Drug Coverage:
- Original Medicare does not include prescription drug coverage. Beneficiaries who want coverage for medications should enroll in a stand-alone Medicare Part D prescription drug plan.
- Medicare Advantage:
- Some beneficiaries opt for Medicare Advantage (Part C) plans, which combine Parts A and B coverage along with additional benefits. These plans are offered by private insurance companies.
- Enrollment Deadlines:
- To avoid late enrollment penalties, beneficiaries must be aware of the enrollment deadlines for both Medicare Part A and Part B.
- Provider Choice:
- Original Medicare allows beneficiaries to choose their healthcare providers without the need for referrals, providing flexibility in healthcare decisions.
- Coverage Flexibility:
- Beneficiaries can use Original Medicare coverage anywhere in the United States, as long as they use healthcare providers who accept Medicare.
Original Medicare, consisting of Medicare Part A and Part B, forms the foundation of healthcare coverage for eligible individuals in the United States. By providing coverage for inpatient hospital care, medical services, preventive care, and medical supplies, Original Medicare addresses essential healthcare needs. Understanding its purpose, coverage details, enrollment information, costs, and considerations is crucial for beneficiaries to make informed decisions about their healthcare coverage. With this knowledge, beneficiaries can navigate the Medicare program effectively, ensuring they have access to the care they need to maintain their health and well-being.
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