your husband does not need to carry insurance if he'll be living overseas for the majority of the year. and family members can have separate health plans. you don't need to be covered by the same policy.
i am married. my husband works overseas and we support our 22-year-old son who is in college. my son has student health insurance right now and me and my husband currently don't have us insurance. my husband will stay abroad for the next two or three years. can i just get obamacare insurance for me and my son together? will my husband be penalized for not having health insurance? can each family member choose different health coverage with a different health provider?