Leah is joined by Rebecca Deming, an attorney specializing in veteran disability law, to explain the bilateral factor in VA disability calculations. They discuss how the VA's unique "VA math" system combines rather than adds disability ratings and how the bilateral factor impacts veterans with disabilities in both arms or both legs, increasing their overall rating. Rebecca explains that the bilateral factor provides a small percentage increase in cases involving conditions affecting both sides, which can affect a veteran’s compensation rate. The video demonstrates a tool on the ProVet Legal website that veterans can use to calculate their combined rating, including the bilateral factor, helping veterans better understand and manage their ratings.