If your Medicare contractor hasn't yet transitioned to a Medicare Administrative Contractor, be aware of potential problems ahead. Therapists in California experienced some major problems with the shift from National Heritage Insurance Corp to Palmetto GBA, according to the Sept. 26 edition of PT Bulletin Online, the American Physical Therapy Association's (APTA's) weekly newswire. To begin with, therapists had difficulties contacting the contractor's customer service department and experienced delays in processing enrollment applications. Once enrolled, many providers were unaware of a new local coverage determination (LCD) they had to abide by and therefore received denials, APTA said. In addition, the new LCD had "an extensive crosswalk," in which ICD-9 codes were linked to CPT codes for reimbursement -- and certain ICD-9 codes were excluded from coverage. To top it off, providers and patients had difficulties determining dollars accrued toward the therapy cap, as well as difficulties in resolving outstanding issues from the previous contractor, NHIC, according to APTA. Physical therapists in other parts of the country may experience similar problems as the Centers for Medicare & Medicaid Services implements contracting reforms, the Bulletin warned. The good news: