Yes, HEBEPHRENIA is a Scrabble word!

Letter values in Scrabble US: H 4, E 1, B 3, E 1, P 3, H 4, R 1, E 1, N 1, I 1, A 1.

Is it a valid word?

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

a form of schizophrenia characterized by severe disintegration of personality including erratic speech and childish mannerisms and bizarre behavior; usually becomes evident during puberty; the most common diagnostic category in mental institutions

Also: hebephrenic schizophrenia, disorganized schizophrenia, disorganized type schizophrenia.