Yes, you are called to ask for Spiritual Communion if you are in a state of mortal sin.
When you are in a mortal sin state, you are not to receive Eucharist and therefore should have spiritual communion with Jesus to get the grace to move you towards confession and reconciliation.
DISCLAIMER: Catholic Answers has turned over the archive to Catholic-Questions.org and no longer owns, manages, or moderates the forums. For additional apologetics resources please visit www.catholic.com.