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Military Health System

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MHS Health Care Glossary

Military Health System (MHS) Health Care Glossary serves as the official repository and consolidated reference (as a secondary source) for terms and definitions used within the MHS. Some terms may have multiple and varying definitions based on the context and primary source of authority. Note that certain definitions may be approved only for limited use in a single primary reference document, while others may have broad applicability in multiple contexts and issuances. To determine the most appropriate definition in a particular context, consult all relevant source documents. Any disparities between this Glossary and primary sources are unintentional, and the primary source shall control.

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Period of Active Service

Glossary Term
Date of Publication:

A period of time in which a Service member serves on active duty.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Rank

Glossary Term
Date of Publication:

The order of precedence among members of the military services.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Related Glossary Terms:

Rank

Office

Glossary Term
Date of Publication:

A position of duty, trust, and authority to which an individual is appointed.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Rating

Glossary Term
Date of Publication:

The name (e.g., “Boatswain’s Mate”) prescribed for service members of a military service in an occupational field.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Grave

Glossary Term
Date of Publication:

Very serious: dangerous to life-used of an illness or its prospects.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Acute

Glossary Term
Date of Publication:

Characterized by sharpness or severity.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Related Glossary Terms:

Acuity

Accepted Medical Principles

Glossary Term
Date of Publication:

Fundamental deductions, consistent with medical facts, that are so reasonable and logical as to create a virtual certainty that they are correct. The Service PEB will state with specificity the basis(es) for the conclusion.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Related Glossary Terms:

Accepted Medical Principles

Non-Active Duty (NAD)

Glossary Term
Date of Publication:

Service members not on active duty orders, to include service members on active duty for 30 days or less or on inactive-duty training.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Armed Conflict

Glossary Term
Date of Publication:

A war, expedition, occupation of an area or territory, battle, skirmish, raid, invasion, rebellion, insurrection, guerilla action, riot, or any other action in which service members are engaged with a hostile or belligerent nation, faction, ...

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Physical Evaluation Board Findings (PEB Findings)

Glossary Term
Date of Publication:

The PEB’s record of proceedings, which includes the fitness decision, code and percentage rating for each unfitting and compensable condition, stability and permanency of the disability, and administrative determinations.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Related Glossary Terms:

Physical Evaluation Board

Active Duty

Glossary Term
Date of Publication:

Full-time duty in the active military service of the United States, including active duty or full-time training duty in the Reserve Component.  Also called AD. See also active duty for training; inactive duty training.  (JP 4-05)

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Related Glossary Terms:

Active Duty

Election

Glossary Term
Date of Publication:

The Service member’s decision to accept or appeal the MEB or PEB findings.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Related Glossary Terms:

Election

Day

Glossary Term
Date of Publication:

Calendar day.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Service Aggravation

Glossary Term
Date of Publication:

The permanent worsening of a pre-Service medical condition over and above the natural progression of the condition.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

DOD Entities with DOD Medicare Eligible Retiree Health Care Fund Concerns

Glossary Term
Date of Publication:

  • Under Secretary of Defense, Personnel and Readiness
  • Assistant Secretary of Defense for Health Affairs
  • Director, Defense Health Agency
  • Chief Actuary, DOD Office of the Actuary (through ...

Source of Definition:

DODI 6070.01: DoD Medicare Eligible Retiree Health Care Fund
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Last Updated: May 15, 2023
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