CMS (Medicare) will only pay for what codes?

• A. M99.01-M99.04
• B. M99.05
• C. M99.00-M99.04
• D. M99.00-M99.05

Answer: (D)

Medicare reimbursement hinges on using a diagnosis code that clearly justifies the service, and for back-related conditions, CMS recognizes an inclusive range within the M99 family. The entire block from M99.00 through M99.05 covers segmental and other back disorders that CMS considers eligible to support payment for related services. Using the full range ensures all valid back-disorder conditions that could justify the service are covered; picking only a subset risks leaving out a condition that Medicare would pay for, potentially leading to denial or the need for additional documentation. Therefore, the appropriate range is M99.00 through M99.05. Using codes outside this block or a narrower subset could fail to meet Medicare’s coverage criteria for the service.