28 CFR § 79.5 - Requirements for medical documentation, contemporaneous records, and other records or documents.

(a) All medical documentation, contemporaneous records, and other records or documents submitted by a claimant or eligible surviving beneficiary to prove any criterion provided for in this part must be originals, or certified copies of the originals, unless it is impossible to obtain an original or certified copy of the original. If it is impossible for a claimant to provide an original or certified copy of an original, the claimant or eligible surviving beneficiary must provide a written statement with the uncertified copy setting forth the reason why it is impossible to provide an original or a certified copy of an original.

(b) All documents submitted by a claimant or eligible surviving beneficiary must bear sufficient indicia of authenticity or a sufficient guarantee of trustworthiness. The Program shall not accept as proof of any criterion of eligibility any document that does not bear sufficient indicia of authenticity, or is in such a physical condition, or contains such information, that otherwise indicates the record or document is not reliable or trustworthy. When a record or document is not accepted by the Program under this section, the claimant or eligible surviving beneficiary shall be notified and afforded the opportunity to submit additional documentation in accordance with § 79.72(b) or (c).

(c) To establish eligibility the claimant or eligible surviving beneficiary may be required to provide additional records to the extent they exist. Nothing in this section shall be construed to limit the Assistant Director's (specified in § 79.70(a)) ability to require additional documentation.