38 CFR Part 3 RIN 2900-AN89 Secondary Service Connection for Diagnosable Illnesses Associated With Traumatic Brain Injury http://www.regulations.gov./#!documentDetail;D=VA-2012-VBA-0029-0001 This is a proposed rule to amend 38 CFR, regarding TBI secondary conditions in part thus: (d) Traumatic brain injury. (1) In a veteran who has a service- connected traumatic brain injury, the following shall be held to be the proximate result of the service-connected traumatic brain injury (TBI