273Y00000X Rehabilitation Hospital Unit

Definition

In general, a distinct unit of a general acute care hospital that provides care encompassing a comprehensive array of restoration services for the disabled and all support services necessary to help patients attain their maximum functional capacity. Source: AHA Annual Survey p. A10 1996 AHA Guide. For Medicare, a distinct part of a general acute care hospital providing inpatient rehabilitation services that meets the following requirements. Rehabilitation Units have in effect a preadmission screening procedure under which each prospective patient's condition and medical history are reviewed to determine whether the patient is likely to benefit significantly from an intensive inpatient program or assessment; ensure that the patients receive close medical supervision and furnish, through the use of qualified personnel, rehabilitation nursing, physical therapy and occupational therapy, plus, as needed, speech therapy, social services or psychological services and orthotic and prosthetic services; have a plan of treatment for each inpatient that is established, reviewed, and revised as needed by a physician in consultation with other professional personnel who provide services to the patient; use a coordinated multidisciplinary team approach in the rehabilitation of each inpatient, as documented by periodic clinical entries made in the patient's medical record to note the patient's status in relationship to goal attainment, and that team conferences are held at least every two weeks to determine the appropriateness of treatment; have a director of rehabilitation who provides services to the unit and its inpatients for at least 20 hours a week, is a doctor of medicine or osteopathy, is licensed under State law to practice medicine or surgery, and has had, after completing a one-year hospital internship at least two years of training or experience in the medical management of inpatients requiring rehabilitation services.

— NUCC Health Care Provider Taxonomy, version 26.1

Where 273Y00000X sits

• Group: Hospital Units — code 4 of 5 in the group
• Classification: Rehabilitation Unit 273Y00000X

Rehabilitation Unit has no specializations, so 273Y00000X 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 273Y00000X 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 Unit. The rest of Hospital Units is on the group page.

History of 273Y00000X

NUCC's notes record no dated changes for 273Y00000X. 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 273Y00000X 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)
• 103TR0400X Rehabilitation Psychologist (Behavioral Health & Social Service Providers)
• 111NR0400X Rehabilitation Chiropractor (Chiropractic Providers)
• 152WL0500X Low Vision Rehabilitation Optometrist (Eye and Vision Services Providers)
• 163WC3500X Cardiac Rehabilitation Registered Nurse (Nursing Service Providers)

Using 273Y00000X

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.