NEW YORK (GenomeWeb) – The American Medical Association is currently working with stakeholders to figure out how coding requirements under a new Medicare law can be implemented within the CPT coding framework it has developed and owns the copyrights to.

However, these efforts raise questions about the viability of unique identifiers developed by McKesson, called Z-Codes, which according to the information technology firm are already being used by a portion of the lab industry, one Medicare contractor, and several private payors.