Residential Treatment Facilities / 320800000X
Non-Individual · classification
320800000X Mental Illness Community Based Residential Treatment Facility
320800000X is the taxonomy code for Community Based Residential Treatment Facility, Mental Illness, in the NUCC group “Residential Treatment Facilities”. It is a code for organizations — the kind used on a Type 2 NPI. It has no entry in the CMS Medicare taxonomy crosswalk.
- 1Taxonomy code 320800000X
- 2Level Classification
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 8
Definition
A home-like residential facility providing psychiatric treatment and psycho/social rehabilitative services to individuals diagnosed with mental illness.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 320800000X sits
- Group: Residential Treatment Facilities — code 1 of 8 in the group
- Classification: Community Based Residential Treatment Facility, Mental Illness 320800000X
Community Based Residential Treatment Facility, Mental Illness has no specializations, so 320800000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
320800000X has no entry in the CMS Medicare Provider and Supplier Taxonomy Crosswalk. That usually means Medicare does not enroll this kind of provider under its own specialty — organizations of this type enroll, if at all, under a facility or supplier type rather than a practitioner specialty.
Related codes
No other codes share the classification Community Based Residential Treatment Facility, Mental Illness. The rest of Residential Treatment Facilities is on the group page.
History of 320800000X
320800000X was added to the code set in 2003.
- 2003-07-01 — new
Similar codes in other groups
If 320800000X is not quite right, these codes in other groups share a word with it — often the same field practised by a different kind of provider:
- 101YM0800X Mental Health Counselor (Behavioral Health & Social Service Providers)
- 146E00000X Community Paramedic (Emergency Medical Service Providers)
- 163WC1500X Community Health Registered Nurse (Nursing Service Providers)
- 163WP0808X Psychiatric/Mental Health Registered Nurse (Nursing Service Providers)
- 163WP0809X Adult Psychiatric/Mental Health Registered Nurse (Nursing Service Providers)
- 163WP0807X Child & Adolescent Psychiatric/Mental Health Registered Nurse (Nursing Service Providers)
Find providers with 320800000X
Using 320800000X
The code goes in the taxonomy field of the NPI application in NPPES, and on claims where a payer asks for it — box 24J (shaded) or 33b on the CMS-1500 with the ZZ qualifier, or the PRV segment of an 837 electronic claim. Payers match it against the taxonomy on the NPI record and, for Medicare, against the specialty on the enrollment, so all three should agree. To see which code a provider uses, search their NPI in the lookup.
Sources: NUCC Health Care Provider Taxonomy code set, version 26.1 (CSV). Checked 2026-10-24. Methodology.