Questão jurídica principal
Whether the IV office's letter ordering a medical treatment is an appealable administrative decision
Decisão extraída
The treatment invitation is not an appealable decision; it is a non-enforceable social insurance burden whose compliance affects entitlement to benefits.
Fundamentação extraída
If the insured refuses treatment, the administration must later issue an appealable decision reducing or stopping the pension, which then allows judicial review of the treatment's reasonableness.