Hospital Units / 276400000X
Non-Individual · classification · Medicare specialty A0
276400000X Substance Use Disorder Rehabilitation Hospital Unit
276400000X is the taxonomy code for Rehabilitation, Substance Use Disorder Unit, in the NUCC group “Hospital Units”. It is a code for organizations — the kind used on a Type 2 NPI. Medicare maps it to specialty A0, Rural Emergency Hospitals, under which 0 practitioners are enrolled.
- 1Taxonomy code 276400000X
- 2Level Classification
- 3Medicare specialty A0 Rural Emergency Hospitals
- 4Codes in this group 5
Definition
A distinct part of a hospital that provides medically monitored, interdisciplinary addiction-focused treatment to patients/clients who have psychoactive substance use disorders (commonly referred to as alcohol and drug abuse or substance abuse.)
— NUCC Health Care Provider Taxonomy, version 26.1
Where 276400000X sits
- Group: Hospital Units — code 5 of 5 in the group
- Classification: Rehabilitation, Substance Use Disorder Unit 276400000X
Rehabilitation, Substance Use Disorder Unit has no specializations, so 276400000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
CMS's taxonomy crosswalk links 276400000X to Medicare specialty A0 (Rural Emergency Hospitals). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 0 practitioners are enrolled under it nationally.
Related codes
No other codes share the classification Rehabilitation, Substance Use Disorder Unit. The rest of Hospital Units is on the group page.
History of 276400000X
NUCC's notes record no dated changes for 276400000X. The code set is republished every January and July, when codes are added, retitled or marked inactive; this page reflects version 26.1, so check the NUCC site if you are reading it after the next release.
Similar codes in other groups
If 276400000X 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:
- 208100000X Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians)
- 2081P0010X Pediatric Rehabilitation Medicine Physician (Allopathic & Osteopathic Physicians)
- 101YA0400X Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers)
- 103TA0400X Addiction (Substance Use Disorder) Psychologist (Behavioral Health & Social Service Providers)
- 103TR0400X Rehabilitation Psychologist (Behavioral Health & Social Service Providers)
- 111NR0400X Rehabilitation Chiropractor (Chiropractic Providers)
Find providers with 276400000X
Using 276400000X
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); CMS Medicare Provider and Supplier Taxonomy Crosswalk, August 2026; CMS Medicare Fee-For-Service Public Provider Enrollment, extract of 2026-09-29. Checked 2026-10-24. Methodology.