I think you're looking for the dependency codes, column 8 (next to last)

"But I have a situation for married filing separately where my client claims the child every year and the child passes all the other tests...So would it be E or H. They are not legally separated & no custody issues."

Code Q, if the child is being claimed by the noncustodial parent.

Code N, if the custodial parent is claiming the child as a dependent