As of 2002, CMS had issued more than 20 national coverage decisions regarding pathology and laboratory services, such as complete blood counts, which include lists of covered and non-covered diagnoses. Pathology and laboratory NCDs were developed to:

A) Define the scope of services for clinical laboratories.
B) Establish billing guidelines for pathology and laboratory services.
C) Identify specific laboratory tests that are reimbursable.
D) Ensure uniform coverage and reimbursement for specific tests and diagnoses.