HL7 Terminology
1.0.0 - Publication

This page is part of the HL7 Terminology (v1.0.0: Release) based on FHIR R4. The current version which supercedes this version is 2.1.0. For a full list of available versions, see the Directory of published versions



Defining URL:http://terminology.hl7.org/ValueSet/v3-ActClassCluster

A group of entries within a composition, topic or category that have a logical association with one another.

The representation of a single observation or action might itself be multi-part. The data might need to be represented as a nested set of values, as a table, list, or as a time series. The Cluster class permits such aggregation within an entry for such compound data.

Examples include "Haematology investigations" which might include two or more distinct batteries.

A cluster may contain batteries and/or individual entries

OID:2.16.840.1.113883.1.11.20204 (for OID based terminology systems)
Source Resource:XML / JSON / Turtle


This value set is not used

Content Logical Definition

Logical Definition (CLD)



This value set contains 1 concepts

Expansion based on ActClass v2.0.0 (CodeSystem)

All codes from system http://terminology.hl7.org/CodeSystem/v3-ActClass

CLUSTERCluster**Description:**An ACT that organizes a set of component acts into a semantic grouping that have a shared subject. The subject may be either a subject participation (SBJ), subject act relationship (SUBJ), or child participation/act relationship types. **Discussion:** The focus in a CLUSTER act is the grouping of the contained acts. For example "a request to cluster" (RQO), "a type of cluster that is allowed to occur" (DEF), etc. **Examples:** * Radiologic investigations that might include administration of a dye, followed by radiographic observations; * "Isolate cluster" which includes all testing and specimen processing performed on a specific isolate; * a set of actions to perform at a particular stage in a clinical trial.

Explanation of the columns that may appear on this page:

Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
Source The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance)
Display The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition An explanation of the meaning of the concept
Comments Additional notes about how to use the code


2020-05-06reviseVocabulary WGTed KleinMigrated to the UTG maintenance environment and publishing tooling.
2014-03-26revise2014T1_2014-03-26_001283 (RIM release ID)Vocabulary (Woody Beeler) (no record of original request)Lock all vaue sets untouched since 2014-03-26 to trackingId 2014T1_2014_03_26