20 CFR §404.1292

1. (a)Form of request. No particular form of request is required. However, a written request for review must:
   1. (1)Identify the assessment, allowance or disallowance being questioned;
   2. (2)Describe the specific issue on which the review is requested;
   3. (3)Contain any additional information or argument relevant to that issue; and
   4. (4)Be signed by an official authorized to request the review on behalf of the State.
2. (b)Submitting additional material. A State has 90 days from the date it requests review to submit additional evidence it wishes considered during the review process. The time limit for submitting additional evidence may be extended upon written request of the State and for good cause shown.