Think you'll have to kiss some Medicare reimbursement good-bye because you missed the timely filing deadline of 12 months? You may be able to find some relief. Background: For claims with dates of service on or after Jan. 1, 2010, the Affordable Care Act imposed a new 12-month timely filing deadline, notes HHH Medicare Administrative Contractor CGS on its website. Prior to that, providers had up to 27 months to file a claim, the Centers for Medi-care & Medicaid Services says in a MLN Matters article on the topic. In January 2011, CMS announced exceptions to the one-year Medicare claim filing period, CGS notes. The exception reasons, which allow extensions of the timely filing provisions, include administrative error, retroactive disenrollment from a Medicare Advantage plan, retroactive Medicare entitlement, and retroactive Medicare entitlement involving state Medicaid agencies, CMS notes in the article. More details about the exceptions are in the MLN Matters article at www.cms.gov/MLNMattersArticles/downloads/MM7270.pdf.