Joshua (single, age 30) was seriously ill by an unusual condition in December 2016…

Joshua (single, age 30) was seriously ill by an unusual condition in December 2016. During the month of December 2016 Joshua paid $25,000 for medical bills for his illness because his insurance company would not pay for his treatment. In February 2017, Joshua filed his 2016 tax return which included an itemized deduction for $10,000 for medical expenses not reimbursed by the insurance company. His Adjusted Gross Income was too high to take all $25,000 as an itemized deduction. In May 2017, Joshua received a check in the amount of $25,000 from his insurance company representing the full reimbursement of the amount he paid in 2016. What is the tax implication (if any) for Joshua?