What BVA decisions deal with secondary service connection?

Direct answer

None of the numbered sources provided are Board of Veterans' Appeals (BVA) decisions. The sources consist exclusively of regulatory text from 38 C.F.R. Part 3 and Part 4. Accordingly, no specific BVA decisions can be identified or cited from this source set.

The source that directly governs secondary service connection is 38 C.F.R. § 3.310, which sets out the regulatory framework but is a rule, not an adjudicative decision [1].

Analysis

The governing regulation, § 3.310, establishes two principal pathways for secondary service connection:

1. Proximate result / causation — "Disability which is proximately due to or the result of a service-connected disease or injury shall be service connected." When granted, "the secondary condition shall be considered a part of the original condition." [1]

1. Aggravation of a nonservice-connected condition — "Any increase in severity of a nonservice-connected disease or injury that is proximately due to or the result of a service-connected disease or injury, and not due to the natural progress of the nonservice-connected disease, will be service connected." The regulation further requires establishment of a baseline severity level before VA will concede aggravation [1].

The regulation also contains specific presumptive secondary-connection provisions:

• Cardiovascular disease following service-connected lower-extremity amputation at or above the knee (unilateral) or at or above the ankles (bilateral) [1].
• Traumatic brain injury — listed conditions held to be the proximate result of a service-connected TBI [1].

Other sources in the set address related service-connection doctrines but are not BVA decisions and do not specifically address secondary service connection:

• § 3.303 (general principles of service connection) [3]
• § 3.304 (direct service connection, presumption of soundness) [4]
• § 3.306 (aggravation of preservice disability — in-service aggravation, not secondary) [22]
• § 3.361 (38 U.S.C. 1151 claims for additional disability due to VA treatment) [20]

Key points

• The provided source set contains no BVA decisions; it contains only 38 C.F.R. regulatory provisions [1]–[28].
• The operative regulation for secondary service connection is 38 C.F.R. § 3.310(a) (proximate causation) and § 3.310(b) (aggravation with baseline severity requirement) [1].
• Special presumptive secondary rules exist for cardiovascular disease after amputation [1, § 3.310(c)] and for conditions secondary to service-connected TBI [1, § 3.310(d)].

If you need actual BVA precedent decisions (e.g., citations to specific docket numbers), those would require sources beyond what is provided here. You may wish to submit a follow-up query with BVA decisions or case law included in the source list.