Nicene and Post-Nicene Fathers, Ser. II, Vol. XIV:
The Canons of the Synods of Sardica, Carthage, Constantinople, and Carthage Under St. Cyprian, Which Canons Were Received by the Council in Trullo and Ratified by II. Nice.: Canon VII

Canon VII.

Concerning those who are reconciled in peril of death.

Aurelius the bishop said:  If anyone had fallen into peril of death during the absence of the bishop, and had sought to reconcile himself to the divine altars, the presbyter should consult the bishop, and so reconcile the sick man at his bidding, which thing we should strengthen with healthy counsel.  By all the bishops it was said:  Whatever your holiness has taught us to be necessary, that is our pleasure.

Notes.

Ancient Epitome of Canon VII.

A priest desiring to reconcile anyone in peril to the sacred altars must consult the bishop and do what seems good to him.

This is Canon iv. of the Synod of 387 or 390.

Johnson.

See Canon 43.