CA Civ Proc Code Section 695.030

(a)

Except as otherwise provided by statute, property of the judgment debtor that is not assignable or transferable is not subject to enforcement of a money judgment.

(b)

The following property is subject to enforcement of a money judgment:

(1)

An interest in a trust, to the extent provided by law.

(2)

A cause of action for money or property that is the subject of a pending action or special proceeding.