(December 13, 2018, 9:14 AM EST) -- NEW YORK — Health insurers due money under the Patient Protection and Affordable Care Act (ACA) risk-adjustment program and New York state faced off in Dec. 10 simultaneous briefing in the Second Circuit U.S. Court of Appeals over whether New York could lay claim to some of those proceeds under its own risk-adjustment program (UnitedHealthcare of New York Inc., et al. v. Maria T. Vullo, et al., No. 18-2583, 2nd Cir.)....