The 37-year-old quarterback's annual checkup was mandated as part of the five-year, $96 million contract he signed in 2012 after missing the 2011 NFL season following multiple surgeries on his neck.
The examination was considered a formality since Manning played in each of his team's 19 games during the 2013 campaign, which ended with a loss to Seattle in the Super Bowl.
After getting the all-clear, Manning's $20 million salary becomes guaranteed for the 2014 season, according to a report that cited a source in the Broncos' organization.
Manning, who set single-season records in the 2013 campaign for touchdown passes and passing yards, is expected to take aim at Brett Favre's career touchdowns record, needing 18 more to lead the all-time list.
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