Hospitals / 284300000X
Non-Individual · classification · Medicare specialty A0
284300000X Special Hospital
284300000X is the taxonomy code for Special Hospital, in the NUCC group “Hospitals”. 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 284300000X
- 2Level Classification
- 3Medicare specialty A0 Rural Emergency Hospitals
- 4Codes in this group 18
Definition
A designation by the AHA of a hospital whose primary function of the institution is to provide diagnostic and treatment services for patients who have specified medical conditions, both surgical and nonsurgical.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 284300000X sits
- Group: Hospitals — code 18 of 18 in the group
- Classification: Special Hospital 284300000X
Special Hospital has no specializations, so 284300000X 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 284300000X 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 Special Hospital. The rest of Hospitals is on the group page.
History of 284300000X
NUCC's notes record no dated changes for 284300000X. 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 284300000X 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:
- 2084N0402X Neurology with Special Qualifications in Child Neurology Physician (Allopathic & Osteopathic Physicians)
- 246YC3301X Hospital Based Coding Specialist (Technologists, Technicians & Other Technical Service Providers)
- 261QC0050X Critical Access Hospital Clinic/Center (Ambulatory Health Care Facilities)
Find providers with 284300000X
Using 284300000X
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.