Medicare Claims Processing Manual (Pub. 100-04), Ch. 18 § 10.4.3
CWF Crossover Edits for A/B MAC (B) Claims
10.4.3 - CWF Crossover Edits for A/B MAC (B) Claims
(Rev. 11355; Issued:04-14-22; Effective:05-16-22; Implementation:05-16-22)
When CWF receives a claim from the MAC (Part B), it will review Part B outpatient claims
history to verify that a duplicate claim has not already been posted.
CWF will edit on the beneficiary MBI number; the date of service; the influenza virus
procedure codes 90630, 90653, 90654, 90655, 90656, 90657, 90658, 90660, 90661, 90662,
90672, 90673, 90674, 90682, 90685, 90686, 90687, 90688, 90694, or 90756; the
pneumococcal procedure codes 90670,90671, 90677, or 90732; and the administration code
G0008 or G0009.
CWF will return a specific reject code for this edit. MACs (B) must deny the second claim and
use the same messages they currently use for the denial of duplicate claims.