What do Local Coverage Determinations (LCDs) specify?

• A. A national standard set by CMS for all providers.
• B. Local coverage determinations specify coverage for specific services within a MAC's jurisdiction, guiding local practice.
• C. A privacy regulation for patient data.
• D. A list of CPT codes that are reimbursable.

Answer: (B)

Local Coverage Determinations focus on whether a service is covered within a specific Medicare Administrative Contractor region, and they lay out the coverage criteria, required documentation, and any regional limitations that guide local practice. This local scope means LCDs can vary by region to reflect evidence and practice patterns in that area, while still operating under federal rules. The other options describe broader or unrelated concepts: a national standard would be handled by National Coverage Determinations, privacy rules govern patient data, and a list of reimbursable CPT codes is not what LCDs specify.