If you file MFJ and you or your husband have earned income (sounds like your husband does) and you are under the income limits for deductibility, then yes, you can make a "spousal IRA" contribution to your IRA for 2017, which would reduce your 2017 MAGI.
The MAGI income limit for deductibility for 2017 for MFJ and one person is covered under a retirement plan at work appears to be $99K. See https://www.irs.gov/retirement-plans...t-plan-at-work
Your contribution would be limited to the lesser of your earned income or the annual IRA limit, which is $6,500 for people over age 50 and $5,500 for people under 50.
You'd have to make your contribution by the filing deadline, which is around April 15, 2018.