𝗜𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 𝗶𝗻𝗳𝗼𝗿𝗺𝗮𝘁𝗶𝗼𝗻 𝗮𝗯𝗼𝘂𝘁 𝘁𝗵𝗶𝘀 𝘆𝗲𝗮𝗿'𝘀 𝗼𝗽𝗲𝗻 𝗲𝗻𝗿𝗼𝗹𝗹𝗺𝗲𝗻𝘁 𝘀𝗲𝗮𝘀𝗼𝗻: You will need to call your regional contractor (Humana Military, TRICARE East, 1-800-444-5445) to make any changes to your health plan, including a change to your PCM, from Oct. 28 - Dec. 31.