Ward, who won the Conn Smythe Trophy as a rookie after leading Carolina to the Stanley Cup in 2006, is 8-8-1 this season with a .912 save percentage and 2.48 goals-against average.
Peters said he doesn't think the 30-year-old will miss much time with the injury.
"I don’t think it’s that serious, to be honest with you. It’s a day-to-day situation. We’re going to take a day off tomorrow, and we gave him yesterday, so now it’s three [days off] in a row, and we think that’s the right thing to do," Peters said. "He’s been down that road before. We didn’t want to push it.”
Carolina has recalled goalie Drew MacIntyre from Charlotte of the American Hockey League on an emergency basis. The 31-year-old MacIntyre is 6-8-1 for the Checkers with a 2.82 GAA and .909 save percentage.
Anton Khudobin will start Thursday against the Capitals. He is 0-5-2 with a .900 save percentage and 2.98 GAA this season.
The Hurricanes have started the season 8-13-3 and are in seventh place in the Metropolitan Division.