42 CFR §405.1809

1. (a)Hearings. Each contractor must establish and maintain written procedures for contractor hearings, in accordance with the regulations in this subpart, for resolving issues that may arise between the contractor and a provider concerning the amount of reasonable cost reimbursement, or prospective payment due the provider (except as provided in § 405.1804) under the Medicare program. The procedures must provide for a hearing on the contractor determination contained in the notice of program reimbursement (§ 405.1803), if the provider files a timely request for a hearing.
2. (b)Amount in controversy. In order for a contractor to grant a hearing, the following dates and amounts in controversy apply:
   1. (1)For cost reporting periods ending prior to June 30, 1973, the amount of program reimbursement in controversy must be at least $1000.
   2. (2)For cost reporting periods ending on or after June 30, 1973, the amount of program reimbursement in controversy must be at least $1000 but less than $10,000.