Is medical license renewal and related expenses deductible?

[JAM80]

My husband is a retired physician and he has volunteered  with multiple organizations since retirement.   He is required to hold a current medical license and CME (continuing medical education).   If this is allowable deduction under charitable contribution, where do I enter the expenses?  Turbo Tax has cash, items and mileage category only.

[Bsch4477]

Interesting question and probably a gray area. The IRS could argue that he derives a personal benefit from being licensed in that it allows him to work if desired and allows him to write prescriptions and other benefits of being a licensed physician. If you want to take your chances with it as a charitable deduction it would be a cash contribution as an out of pocket expense. 

[JAM80]

Thank you very much for your advice.