United States Health Information Knowledgebase


Patient Class

Definition:This is used to categorize patients by the site where the encounter occurred , e.g., Emergency, Inpatient, or Outpatient
Constraints:C154-[DE-16.10-1] Patient Class SHALL be coded as specified in HITSP/C80 Section Patient Class

Value Set

Patient Class Value Set

Definition:The HL7 ActEncounterCode has been limited by HITSP to the value set reproduced below in Table 2-133 V3 Patient Class Value Set Definition
Code System Name:Act Encounter Code
Code System Source:Health Level Seven (HL7) Version 3.0 Vocabulary
Concept Code Concept Name Definition
AMB Ambulatory A comprehensive term for healthcare provided in a healthcare facility (e.g., a practitioners' office, clinic setting, or hospital) on a nonresident basis. The term ambulatory usually implies that the patient has come to the location and is not assigned to a bed. Sometimes referred to as an outpatient encounter
EMER Emergency A patient encounter that takes place at a dedicated healthcare service delivery location where the patient receives immediate evaluation and treatment, provided until the patient can be discharged or responsibility for the patient's care is transferred elsewhere (for example, the patient could be admitted as an inpatient or transferred to another facility)
IMP Inpatient encounter A patient encounter where a patient is admitted by a hospital or equivalent facility, assigned to a location where patients generally stay at least overnight and provided with room, board, and continuous nursing service

Download as a PDF file.
[Download PDF Reader Exit Disclaimer]
Download as an MS Excel™ spreadsheet.
[Download Excel Reader Exit Disclaimer]

There are no Conceptual Domains linked to Patient Class.

Relationship Organization Item
utilizes HITSP Patient Class Value Set   
Scroll To Top