West Virginia Oncology Society
Part B claims processed after 1/4/2010 may not have crossed over correctly to the Coordination of
Benefits Contractor (COBC). The system maintainer for CWF has scheduled a fix for this problem on
02/19/2010.

Unfortunately, CWF is not able to recover and submit to the COBC any claims that were missed for
crossover between 1/4/2010 and 2/19/2010. Therefore, if a provider identifies claims that they
believe should have been crossed over to a supplemental insurer but were not crossed over due
to this problem,
the provider will need to submit the claim information to the patient's
insurers for supplemental payment
. Medicare apologizes for any inconvenience.
What's New. . . . .
ALERT ISSUED: Part B Coordination of Benefits Claims not
Crossing Over