Need the radio code for 1996 volvo 850.

Yes. Call a dealer.  If they tell you that you have to come in person or want to charge you then call another.  Even search for dealers over the internet.  Most will give it to you over the phone, a smaller portion will want to either charge or make you come in person.  Again, if that happens just call another dealer.  If the radio is original, you can just give them the VIN.  If you suspect it isn't or if the code they give you doesn't work then you need to pull the radio and gave them the serial number on it.

Thanks will do