Medicare Program Integrity Manual (Pub. 100-08), Ch. 4 § 4.11.4
Documents
4.11.4 - Documents
(Rev. 11032; Issued: 09-30-21; Effective: 10-12-21; Implementation: 11-10-21)
Documentary evidence is extremely important in the CMP process. It is not only the
evidence needed to support the administrative actions, but also a tool used for cross-
referencing, verifying statements, and/or providing backup or background information.
Documentary evidence shall be identified, accounted for, and protected from loss,
damage, or alteration. When copies of documents are made, care shall be taken to ensure
that all copies are legible and accurate. Wherever possible, documents or copies shall be
preserved in their original state; making marks on the face of the documents shall be
avoided. If marks or explanations are necessary for explanation or clarification, include
an additional copy of the document with marks on the copy.