Claims processing codes: Find definitions of reason and remark codes There could be several reasons why your claim was denied or otherwise did not process successfully. Use these available... March 12, 2026
Claims with CPT codes 90653, 90656, 90657, 90660, 90661, 90662, 90658, and 90673 priced incorrectly 2024-2025 flu season codes priced incorrectly. February 18, 2026
Claims: Adjusting, reopening, cancelling, and resubmitting View reasons and scenarios for adjusting, reopening, cancelling, and resubmitting claims. February 25, 2026
Clarification of Medicare bad debt policy / bad debt policy related to accounts at a collection agency This article clarifies longstanding policy concerning reimbursement for a Medicare bad debt while the account is at a collection... July 25, 2024
Clerical reopening requests Avoid the appeals process by making minor claim corrections through a clerical reopening request for Part B claims. July 12, 2025
Clinical laboratory Information for clinical laboratory providers and suppliers, including links to LCDs/NCDs, education, FAQs, provider enrollment... January 16, 2026
Clinical nurse specialist (CNS) View the qualification and documentation requirements for becoming a Medicare-enrolled clinical nurse specialist. April 8, 2026
Clinical psychologist (CP) View requirements for enrolling as a clinical psychologist with Medicare. March 31, 2026
Clinical social worker (CSW) View requirements for enrolling as a clinical social worker with Medicare. February 18, 2026
Clinical trials background Medicare covers the routine costs of qualifying clinical trials, as such costs are defined in National Coverage Determination... August 23, 2024
