To amend title 38, United States Code, to codify the addition by the Secretary of Veterans Affairs of certain additional diseases to the list of diseases occurring in veterans that are considered to be service-connected.

Adds Hodgkin's disease and porphyria cutanea tarda, both becoming manifest to a degree of ten percent or more, to the list of diseases that will be presumed to be service-connected, and, therefore, compensable under veterans' disability provisions, when suffered by Vietnam era veterans after serving on active duty in Vietnam.