EWTN Catholic Q&A
Re Holy Eucharist [Anna]
Question from Joseph Kelley on 10-29-2012:

Can. 917 A person who has already received the Most Holy Eucharist can receive it a second time on the same day only within the eucharistic celebration in which the person participates, without prejudice to the prescript of ⇒ can. 921, 2.

Can. 921, 2. Even if they have been nourished by holy communion on the same day, however, those in danger of death are strongly urged to receive communion again.

Answer by Richard Geraghty on 11-07-2012:

Dear Joseph,

Thanks for your note.

Dr. Geraghty