Sarnelli's beatification depended on one miraculous healing to be verified and approved. One such case was investigated in a diocesan process with the Congregation for the Causes of Saints validating the process and receiving all the medical documents. The medical experts consulting the C.C.S. approved this case on 1 June 1995 as did the theologians on 13 October 1995 and the C.C.S. on 5 December 1995. Pope John Paul II issued his approval to this miracle on 12 January 1996 and beatified Sarnelli in Saint Peter's Square on 12 May 1996.