The lexicon of the top500 ( The Encyclopedia for Classification Codes ) explains the codes and definitions in the world of economical classifications.
NAICS Code 6232 Residential Mental Retardation, Mental Health and Substance Abuse Facilities
The NAICS Code 6232 is described as
Residential Mental Retardation, Mental Health and Substance Abuse Facilities Description
This industry group comprises establishments primarily engaged in providing residential care (but not licensed hospital care) to people with mental retardation, mental illness, or substance abuse problems.
(2019-08-02)
It belongs to the code group
NAICS Code 623 (Nursing and Residential Care Facilities)