Set up a national healthcare database that healthcare providers can tie into a national system. Similar to what law enforcement has (NCIS).
Each body system is coded the same so that each treatment is documented and tracked for life. If child has treatment at age 6, that info is documented in national database. At 16, more entries. At 26, while on active duty, again another entry. At 36, vet goes to VA Medical center and again it is entered.
At 46, vet files for disability on the injury and treatment that occurred at age 26 while overseas in combat theater. VA benefits office hits the national database and pulls up complete history on that body system and the claimed benefit. Everything is consolidated and quickly gathered. Claim is processed within a few hours.