Nova is throwing on level ground at the Yankees' minor league complex. He tore a ligament in the elbow last April 19 during a game against Tampa Bay and had surgery 10 days later.
Recovery time is normally 12 to 15 months.
Nova is 40-22 in parts of five major league seasons and has a $3.3 million, one-year contract for this year, the same salary the pitcher earned in 2014. He is eligible for free agency after the 2016 season.