Yes, EPIDURALS is a Scrabble word!

Letter values in Scrabble US: E 1, P 3, I 1, D 2, U 1, R 1, A 1, L 1, S 1.

Is it a valid word?

EPIDURALS is a valid word in the official Scrabble dictionary (US) and the UK Scrabble Dictionary, but not in Words with Friends (ENABLE).

regional anesthesia resulting from injection of an anesthetic into the epidural space of the spinal cord; sensation is lost in the abdominal and genital and pelvic areas; used in childbirth and gynecological surgery

Also: epidural anesthesia, epidural anaesthesia.