20 CFR § 404.951 - Official record.
(a) Hearing recording. All hearings will be recorded. The hearing recording will be prepared as a typed copy of the proceedings if -
(3) An administrative law judge or the Appeals Council asks for a written record of the proceedings.
(b) Contents of the official record. All evidence upon which the administrative law judge relies for the decision must be contained in the record, either directly or by appropriate reference. The official record will include the applications, written statements, certificates, reports, affidavits, medical records, and other documents that were used in making the decision under review and any additional evidence or written statements that the administrative law judge admits into the record under §§ 404.929 and 404.935. All exhibits introduced as evidence must be marked for identification and incorporated into the record. The official record of your claim will contain all of the marked exhibits and a verbatim recording of all testimony offered at the hearing. It also will include any prior initial determinations or decisions on your claim.