Looking for a no-code solution to prevent an Account from having multiple Active Contracts

Good afternoon,

I'm looking for a no-code solation that would prevent a user from adding a new "active" contract to an account if one already exists.

Example,

"Account A" has "Contract X" which is currently active. We would like to prevent a user from adding "Contract Y" to "Account A" since it already has an active contract. Is this possible without code? Currently on 8.1.5.2177 if that makes a difference . 

Regards,

Michael