Form I-693 that was properly completed and signed by a civil surgeon on or after Nov. 1, 2023, does not expire.

Reference : https://www.uscis.gov/i-693

ALERT: Effective April 4, 2024, any Form I-693 that was properly completed and signed by a civil surgeon on or after Nov. 1, 2023, does not expire. You can use it indefinitely as evidence that you are not inadmissible on health-related grounds. For more information, see the Policy Alert.

Additionally, effective Nov. 13, 2024, immigration medical examinations are valid indefinitely for certain Afghan nationals who arrived in the United States during Operation Allies Welcome. For more information on how this policy applies, see the Policy Alert.