"Starting June 1, 2014, USCIS will limit the validity period for all Forms I-693, Report of Medical Examination and Vaccination Record, to one year from the date of submission to USCIS. Applicants must also submit Form I-693 to USCIS within one year of the immigration medical examination. USCIS will also provide additional ways to submit Form I-693. As outlined in policy alert PA-2014-005, this updated policy applies to any Form I-693 supporting a benefit application that USCIS adjudicates on or after June 1, 2014.
USCIS will hold an engagement on June 12, 2014 to address questions about the new policy and provide guidance on filing Form I-693. We have also updated the Form I-693 Web page on our website." - USCIS, May 30, 2014.