To amend title 38, United States Code, to provide a presumption of service connection for certain specified diseases and disabilities in the case of veterans who were exposed during military service to carbon tetrachloride.

Provides that any of certain listed diseases or disabilities becoming manifest in any veteran who served 90 days or more of active military duty during which such veteran was exposed to carbon tetrachloride shall be considered to be service-connected, and therefore compensable through veterans' disability compensation, notwithstanding evidence of such disease during such service.