The former doubles partners had been competing on opposite sides for the first time since they split up.
"The three-member body dismissed Issara's appeal and confirmed he is ineligible to compete in all tournaments sanctioned by the BWF for two years, effective July 21 2013," the BWF said in a statement.
Maneepong, who had hit Bodin with his racquet after a heated verbal exchange, has already served a three-month ban and returned to action.
After the bans were imposed Bodin took responsibility for the incident and called for Maneepong's suspension to be cut.
(Writing by Sudipto Ganguly; editing by Peter Rutherford)
