According to his representative, the surgery is a routine outpatient procedure, reported E!News
The actor, who plays Don Draper in 'Mad Men', was overheard talking about his medical condition with onscreen ex-wife January Jones at Emmys afterparty on Sunday night.
'Mad Men' star did not win any Emmy but clad in a white Armani tuxedo jacket and black pants, he appeared to be in good spirits.
He and Amy Poehler hosted a losers party for all the nominees at the 65th Annual Primetime Emmy Awards.