Whether the invalidity office's denial of benefits had to be annulled because the medical file was incomplete.
Yes. The relevant facts had not been fully established medically, so the matter had to be remitted for further instruction and a new decision.
Under the duty to investigate, the office must complete the medical record itself. Because the decision relied on a SMR report and both the treating doctor and the office accepted the need for a neurological expertise, the appeal was well founded to the extent it sought remittal.