Yes, DEDUCTIBLES is a Scrabble word!

Letter values in Scrabble US: D 2, E 1, D 2, U 1, C 3, T 1, I 1, B 3, L 1, E 1, S 1.

Is it a valid word?

DEDUCTIBLES is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

(taxes) an amount that can be deducted (especially for the purposes of calculating income tax)
a clause in an insurance policy that relieves the insurer of responsibility to pay the initial loss up to a stated amount