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Military Health System

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Clear and Unmistakable Evidence

Date of Publication:



Undebatable information that the condition existed before military service and was not aggravated by military service (i.e., evidence that cannot be misinterpreted and misunderstood). In other words, reasonable minds could only conclude that the condition existed prior to military service from a review of all of the evidence in the record.

Source of Definition:

DoDI 1332.18: Disability Evaluation System (DES)

Last Updated: November 22, 2022
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