20 CFR § 404.2109 - Responsibility for making payment decisions.
The Commissioner will decide -
(a) Whether a continuous period of 9 months of SGA has been completed;
(b) Whether a disability beneficiary whose disability has ceased should continue to receive benefits under § 404.316(c), 404.337(c), or 404.352(c) for a month after October 1984, based on his or her continued participation in a VR program;
(c) If and when medical recovery has occurred;
(d) Whether documentation of VR services and expenditures is adequate;
(f) Whether a VR service is a service described in § 404.2114; and
(g) What VR costs were reasonable and necessary and will be paid.