This study examines those practices, known as bid shopping, and its effects on the private sector of the construction industry. Bid shopping is primarily used by contractors and subcontractors to gain an unfair advantage over their clients, competition and subcontractors during the bidding process.
MA61: Missing/incomplete/invalid Social Security number or health insurance claim number (HICN). MA36: Missing /incomplete/invalid patient name. MA27: Missing/incomplete/invalid entitlement number or name shown on the claim. â¢ Review and make a copy of patientâs Medicare card for file and verify eligibility.
Your Medicare card number is your Social Security number with  an alpha-numeric code on the end that indicates your status for  drawing benefits. For example, an A meanâ¦s you are (or were) the  primary wage earner; B means aged wife, 62 or older; B1 means aged  husband, 62 or older, and so on.