NPI Desk

Hospital Units / 273R00000X

Non-Individual · classification · Medicare specialty A0

273R00000X Psychiatric Hospital Unit

273R00000X is the taxonomy code for Psychiatric 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.

24JNPI1234567893273R00000XPsychiatric Unit1234
  1. 1Taxonomy code 273R00000X
  2. 2Level Classification
  3. 3Medicare specialty A0 Rural Emergency Hospitals
  4. 4Codes in this group 5
Code
273R00000X
classification
NPI type
Type 2
non-individual
Medicare specialty
A0
0 enrolled
NUCC change log
0 changes
none recorded

Definition

In general, a distinct unit of a hospital that provides acute or long-term care to emotionally disturbed patients, including patients admitted for diagnosis and those admitted for treatment of psychiatric problems on the basis of physicians' orders and approved nursing care plans. Long-term care may include intensive supervision to the chronically mentally ill, mentally disordered or other mentally incompetent persons; (2) For Medicare, a distinct part of a general acute care hospital admitting only patients whose admission to the unit is required for active treatment, whose treatment is of an intensity that can be provided only in an inpatient hospital setting, and whose condition is described by a psychiatric principal diagnosis contained in the Third Edition of the American Psychiatric Association Diagnostic and Statistical Manual or in Chapter 5 (Mental Disorders) of the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM). The unit must furnish, through the use of qualified personnel, psychological services, social work services, psychiatric nursing, occupational therapy, and recreational therapy. The unit must maintain medical records that permit determination of the degree and intensity of treatment provided to individuals who are furnished services in the unit; the unit must meet special staff requirements in that the unit must have adequate numbers of qualified professional and supportive staff to evaluate inpatients, formulate written, individualized, comprehensive treatment plans, provide active treatment measures and engage in discharge planning.

— NUCC Health Care Provider Taxonomy, version 26.1

Where 273R00000X sits

Psychiatric Unit has no specializations, so 273R00000X 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 273R00000X 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 Psychiatric Unit. The rest of Hospital Units is on the group page.

History of 273R00000X

NUCC's notes record no dated changes for 273R00000X. 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 273R00000X 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:

Find providers with 273R00000X

 

Using 273R00000X

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.