The deadline for Version 5010 electronic healthcare transaction standards begins on January 1, 2011. By then, practices should test the functionality of practice management and clearinghouse software for claims, remittance advice, eligibility and referrals using Version 5010 standards. Use of the Version 5010 standards becomes mandatory on January 1, 2012. Revised code sets for ICD-10 then must be in place no later than October 1, 2013.