Iowa Admin. Code r. 191-3.4
Any person claiming an entitlement to a contested case proceeding shall file a written request for such a proceeding within the time specified by the particular rules or statutes governing the subject matter or, in the absence of such law, the time specified in the division action in question. The request shall be filed with the division at the address disclosed in rule 191-1.4 (502,505).
The request for a contested case proceeding shall state the name and address of the requester; identify the specific division action that is disputed if applicable; include a short and plain statement of the issues of material fact in dispute; and, where the requester is represented by a lawyer, identify the provisions of law or precedent requiring or authorizing a contested case proceeding in the particular circumstances involved.
Iowa Admin. Code r. 191-3.4