Can I claim all of these on my 2017 Tax Return? I have unclaimed medical expenses dating from Jan 3/16-Sep 4/16. I also have medical expenses from Jan 3/17 to Nov 16/17.

[TurboTaxTara]

You can choose any 12-month period for your medical expense claim, as long as it ends in the tax year. Set your claim period to get the most out of your medical expenses:  https://turbotax.community.intuit.ca/replies/3259119

Consider adjusting your prior year return to claim older expenses that don't fit well within your chosen claim period for this year's return. This is how to adjust a prior year return: https://turbotax.community.intuit.ca/replies/2647992