1 â¢ Print, sign and date the two-page Certification. Statement and mail it along with all requested. supporting documentation to the Medicare. contractor. 2  Note: 3  Do not mail the CMS-855 paper that can. be printed from Internet-based PECOS.  Retain this information for your records.
Definition of mastic. 1 : an aromatic resinous exudate from mastic trees used chiefly in varnishes.
(mÄsâ²tÄ­k) n. 1. The mastic tree. 2. The aromatic resin of the mastic tree, used in varnishes and as a flavoring and formerly in chewing gum and as a medicine. 3. Any of various substances used as an adhesive or sealant.