Wagner will have his left knee scoped Thursday and is expected to be sidelined from baseball activities for about a month, Keegan Matheson of MLB.com reports.
The Blue Jays placed Wagner on the 60-day injured list Tuesday due to left knee inflammation.
Wagner isn't in the Blue Jays' lineup Saturday against the Cardinals.
Wagner is absent from the lineup for Tuesday's game versus the Mets.
Wagner is not in the starting lineup for Sunday's game against Atlanta.
Wagner is out of the lineup for Sunday's game against the Twins.
Wagner is not in the lineup for Thursday's game in Boston.
Wagner went 3-for-4 with two doubles and a solo home run in Tuesday's 6-3 loss to the Red Sox.
Wagner is out of the lineup for Monday's game against the Red Sox.
Wagner isn't in the Blue Jays' lineup for Saturday's game against the Angels.