Whether the appeal was admissible despite the absence of a decision on opposition or a new formal decision on the later coverage requests.
The appeal was inadmissible because only the 2013-06-20 formal decision existed, it was not timely opposed, and no formal decision had been issued on the later requests.
Under Art. 56 para. 1 LPGA, only decisions on opposition or decisions not subject to opposition may be appealed. The earlier decision entered into force, and the later correspondence did not amount to an appealable formal decision; the insured had to first request that the insurer issue a decision on the new requests.