Trial court's denial of plaintiff's motion to extinguish a portion of a Medicaid lien asserted by the Department of Health Services is reversed and remanded where: 1) the trial court violated the principles set forth in Ahlborn when it failed to determine the portion of the settlement proceeds allocable to past medical expenses and instead allowed DHS to recover the entire amount of its lien, less attorney fees and costs; and 2) DHS is not entitled to a lien on the portion of the settlement proceeds allocable to future medical costs.