Hospital Units / 273100000X
Non-Individual · classification · Medicare specialty A0
273100000X Epilepsy Hospital Unit
273100000X is the taxonomy code for Epilepsy 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 273100000X
- 2Level Classification
- 3Medicare specialty A0 Rural Emergency Hospitals
- 4Codes in this group 5
Definition
An Epilepsy Unit is a distinct unit of a hospital that provides services that may include observation, urgent care, diagnostic testing, treatment, and medication management for patients with seizure disorders.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 273100000X sits
- Group: Hospital Units — code 1 of 5 in the group
- Classification: Epilepsy Unit 273100000X
Epilepsy Unit has no specializations, so 273100000X 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 273100000X 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 Epilepsy Unit. The rest of Hospital Units is on the group page.
History of 273100000X
273100000X was added to the code set in 2007.
- 2007-07-01 — new
Similar codes in other groups
If 273100000X 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:
- 2084E0001X Epilepsy Physician (Allopathic & Osteopathic Physicians)
Find providers with 273100000X
Using 273100000X
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.