Pensions, bonuses, and veterans'relief. Part3:Adjudication. Section3.310:Disabilities that are proximately due to, or aggravated by, service-connected disease or injury.
(a) General. Except as provided in § 3.300(c), disability which is proximately due to or the result of a service-connected disease or injury shall be service connected. When service connection is thus established for a secondary condition, the secondary condition shall be considered a part of the original condition.