He is expected to play in the Super Bowl, which will be only his third game of the season.
Harvin suffered a concussion in the divisional playoff game against the New Orleans Saints on Jan. 11, and didn't make it through the mandatory concussion protocol in time to play in the NFC Championship Game on Sunday against the San Francisco 49ers.
Harvin, who signed a six-year, $67 million deal with the Seahawks last March, had hip surgery on Aug. 1 to repair a torn labrum. He played in only one regular-season game -- Nov. 17 against his former Minnesota Vikings teammates -- before aggravating the hip.
He didn't play again until the playoff game against the Saints.