You need to more specific about the situation! If your 76 cs Mid laner in a 40 min game has the highest CS in game...
then Good Job Mid laner.
If your Mid laner is 76 cs and has 20 deaths because he was camped by their jungler and no one ever helped...
then gg.
(I know.. I know.. the jungler was busy helping top, bot lane was pushed all the way to the enemy inhib turret, and the support couldn't be bothered to help mid. It happens.)
If your support has 56 cs and your ADC has 10 cs...
then wtf. Stop watching mid and focus on helping the ADC.
Your story is incomplete. We need more info. Plz fix.