42 CFR §478.42

1. (a)Where to submit the written request. A beneficiary who wants to obtain a hearing under § 478.40 must submit a written request to the OMHA office identified in the notice of the QIO reconsidered determination.
2. (b)Time limit for submitting a request for a hearing.
   1. (1)The request for a hearing must be filed within 60 calendar days of receipt of the notice of the QIO reconsidered determination, unless the time is extended for good cause as provided in § 478.22.
   2. (2)The date of receipt of the notice of the reconsidered determination is presumed to be 5 calendar days after the date on the notice, unless there is evidence to the contrary.
   3. (3)A request is considered filed on the date it is received by OMHA.