Question juridique clé
Whether the cantonal court wrongly declared the insured person's filing inadmissible for lack of a prior formal decision by the insurer.
Solution extraite
The cantonal court correctly held that, without a formal decision on benefits, there was no litigable subject matter before it.
Motifs extraits
In administrative judicial proceedings, courts may review only legal relationships on which the competent authority has previously ruled by decision. The insurer's letter to the doctor was not addressed to the insured person, lacked the formal attributes of a decision, and had no independent legal effect.