I think you are referring to the Long Term Care Credit. Virginia's instructions are vague. If you have "carryover credits", those would be allowed. This is what I found:
Long-Term Care Insurance Tax Credit
This credit expired December 31, 2013, and no credits may be claimed for taxable years beginning after that date. Only carryover credits from prior years are allowed.
For more information, contact: Virginia Department of Taxation, Tax Credit Unit, P.O. Box 715, Richmond, VA 23218-0715, or call (804) 786-2992.
There is also a deduction for the Long Term Care premiums but this is for premiums paid in the year 2018.
