On December 10, 2009, the USCIS issued a policy memorandum extending the validity of medical certifications on Form I-693, titled Medical Examination of Aliens Seeking Adjustment of Status. Generally, the endorsement of a civil surgeon on Form I-693 is valid for one year. However, due to a continuing processing backlog, some applications for adjustment of status remain pending for more than a year. As a response, USCIS, in consulting with the Centers for Disease Control and Prevention, issued this policy which applies to those applications where no Class A or Class B medical condition, other than a Class B condition annotated in section 6, Part 2, was certified. In such cases, the validity of the civil surgeon’s endorsement on Form I-693 is extended until the time of adjustment of status. The policy will remain in effect until January 1, 2011.