Glossary

Acronyms
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Glossary and Acronyms
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OLD-AGE, SURVIVORS, AND DISABILITY INSURANCE

The Social Security programs that pay for (1) monthly cash benefits to retired-worker (old-age) beneficiaries, their spouses and children, and survivors of deceased insured workers (OASI); and (2) monthly cash benefits to disabled-worker beneficiaries and their spouses and children, and for providing rehabilitation services to the disabled (DI).

OMBUDSMAN

An ombudsman is an individual who assists enrollees in resolving problems they may have with their MCO/PHP. An ombudsman is a neutral party who works with the enrollee, the MCO/PHP, and the provider (as appropriate) to resolve individual enrollee problems.

OMBUDSMAN

An advocate (supporter) who works to solve problems between residents and nursing homes, as well as assisted living facilities. Also called "Long-term Care Ombudsman."

ON-SITE REVIEWS

Reviews performed on-site at the MCO/PHP health care delivery system sites to assess the physical resources and operational practices in place to deliver health care.

OPEN ENROLLMENT PERIOD

A one-time-only six month period when you can buy any Medigap policy you want that is sold in your State. It starts in the first month that you are covered under Medicare Part B and you are age 65 or older. During this period, you can’t be denied coverage or charged more due to past or present health problems.

OPEN SYSTEM INTERCONNECTION

A multi-layer ISO data communications standard. Level Seven of this standard is industry-specific, and HL7 is responsible for specifying the level seven OSI standards for the health industry.

OPTIONAL SUPPLEMENTAL BENEFITS

Services not covered by Medicare that enrollees can choose to buy or reject. Enrollees that choose such benefits pay for them directly, usually in the form of premiums and/or cost sharing. Those services can be grouped or offered individually and can be different for each M+C plan offered.

ORGAN

Organ means a human kidney, liver, heart, or pancreas.

ORGAN PROCUREMENT

The process of acquiring donor kidneys in the ESRD program.

ORGAN PROCUREMENT ORGANIZATION

An organization that performs or coordinates the retrieval, preservation, and transportation of organs and maintains a system of locating prospective recipients for available organs.