Can i claim employee paid medical from previous tax year that were not included in box 85 on previous t4s and i did not claim on that years return?

[rjsimundson]

my employer does not included employee paid benefits under box 85. I was unaware and did not claim under medical expenses in the previous tax year.  Can I include the previous year with the current year

[TurboTaxKim]

Yes and No. You can not include amounts for your Private Health Services Plan (PHSP) or Extended Medical/Dental that relate to prior years  on your current year tax year, unless you choose to use a "one year block" that ends in the year you are filing. 

For example: If you are filing the 2018 tax return, you could choose to use the period from July 1st, 2017 to June 30, 2018 as your one year block. 

It would probably be easiest to make an "adjustment" to any prior years that the amounts relate to and base it on an annual basis.