Are there time limits for submitting claims?
All claims for Medicare reimbursement must be submitted within the following time frames:

For services rendered Claims must be filed by:
Oct. 1, 2007 – Sept. 30, 2008 Dec. 31, 2009
Oct. 1, 2008 – Sept. 30, 2009 Dec. 31, 2010
Oct. 1, 2009 – Sept. 30, 2010 Dec. 31, 2011