Question juridique clé
Whether the appeal against the remand decision was admissible under Art. 93 BGG
Solution extraite
The appeal was admissible only insofar as it challenged the binding instruction to assess invalidity by income comparison; it was inadmissible to the extent it merely attacked the remand for further clarification as unnecessary.
Motifs extraits
A remand causing further investigation normally does not create irreparable legal harm. Such harm exists only when the lower court binds the administration on a substantive point restricting its discretion, as with the method of invalidity assessment. No significant saving of time or costs for extensive evidence was shown.