> For the complete documentation index, see [llms.txt](https://docs.snomed.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snomed.org/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/observable-entity/observable-entity-attributes-summary.md).

# Observable Entity Attributes Summary

<mark style="color:$danger;">**This Editorial Guide is used for Education Purposes Only. It is used in the Authoring Courses and Certifications. It is based on the January 2026 Editorial Guide.**</mark>

When authoring in this domain, these are the approved attributes and allowable ranges.

## Domain Information for Observable Entity

<table><thead><tr><th width="302.0728759765625">Property</th><th>Value</th></tr></thead><tbody><tr><td>Domain Constraint</td><td>&#x3C;&#x3C; 363787002 | Observable entity (observable entity) |</td></tr><tr><td>Parent Domain</td><td>-</td></tr><tr><td>Proximal Primitive Constraint</td><td>&#x3C;&#x3C; 363787002 | Observable entity (observable entity) |</td></tr><tr><td>Proximal Primitive Refinement</td><td>-</td></tr></tbody></table>

## Author View of Attributes and Ranges for Observable Entity

<table data-full-width="true"><thead><tr><th width="215.58331298828125">Attribute</th><th width="103.01214599609375">Grouped</th><th width="124.8167724609375">Cardinality</th><th width="178.282958984375">In Group Cardinality</th><th>Range Constraint</th></tr></thead><tbody><tr><td>704321009 | Characterizes (attribute) |</td><td>1</td><td>0..*</td><td>0..*</td><td>&#x3C;&#x3C; 71388002 | Procedure (procedure) | OR &#x3C;&#x3C; 719982003 | Process (qualifier value) |</td></tr><tr><td>246093002 | Component (attribute) |</td><td>1</td><td>0..*</td><td>0..*</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 123038009 | Specimen (specimen) | OR &#x3C;&#x3C; 260787004 | Physical object (physical object) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) | OR &#x3C;&#x3C; 410607006 | Organism (organism) | OR &#x3C;&#x3C; 419891008 | Record artifact (record artifact) | OR &#x3C;&#x3C; 540091010000105 | Calculation (calculation) |</td></tr><tr><td>704327008 | Direct site (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 123038009 | Specimen (specimen) | OR &#x3C;&#x3C; 260787004 | Physical object (physical object) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) | OR &#x3C;&#x3C; 410607006 | Organism (organism) | OR &#x3C;&#x3C; 419891008 | Record artifact (record artifact) |</td></tr><tr><td>719722006 | Has realization (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 272379006 | Event (event) | OR &#x3C;&#x3C; 404684003 | Clinical finding (finding) | OR &#x3C;&#x3C; 71388002 | Procedure (procedure) | OR &#x3C;&#x3C; 719982003 | Process (qualifier value) |</td></tr><tr><td>718497002 | Inherent location (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 123038009 | Specimen (specimen) | OR &#x3C;&#x3C; 260787004 | Physical object (physical object) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) | OR &#x3C;&#x3C; 410607006 | Organism (organism) | OR &#x3C;&#x3C; 419891008 | Record artifact (record artifact) |</td></tr><tr><td>704319004 | Inheres in (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 123038009 | Specimen (specimen) | OR &#x3C;&#x3C; 125676002 | Person (person) | OR &#x3C;&#x3C; 260787004 | Physical object (physical object) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) | OR &#x3C;&#x3C; 410607006 | Organism (organism) | OR &#x3C;&#x3C; 419891008 | Record artifact (record artifact) |</td></tr><tr><td>704326004 | Precondition (attribute) |</td><td>1</td><td>0..*</td><td>0..*</td><td>&#x3C;&#x3C; 404684003 | Clinical finding (finding) | OR &#x3C;&#x3C; 703763000 | Precondition value (qualifier value) | OR &#x3C;&#x3C; 71388002 | Procedure (procedure) |</td></tr><tr><td>405815000 | Procedure device (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 49062001 | Device (physical object) |</td></tr><tr><td>1003735000 | Process acts on (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) |</td></tr><tr><td>704322002 | Process agent (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 260787004 | Physical object (physical object) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) | OR &#x3C;&#x3C; 410607006 | Organism (organism) |</td></tr><tr><td>704323007 | Process duration (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 7389001 | Time frame (qualifier value) |</td></tr><tr><td>1003703000 | Process extends to (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 123037004 | Body structure (body structure) |</td></tr><tr><td>704324001 | Process output (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 719982003 | Process (qualifier value) |</td></tr><tr><td>370130000 | Property (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 118598001 | Property (qualifier value) |</td></tr><tr><td>704325000 | Relative to (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 123038009 | Specimen (specimen) | OR &#x3C;&#x3C; 260787004 | Physical object (physical object) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) | OR &#x3C;&#x3C; 410607006 | Organism (organism) | OR &#x3C;&#x3C; 419891008 | Record artifact (record artifact) |</td></tr><tr><td>719715003 | Relative to part of (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 123038009 | Specimen (specimen) | OR &#x3C;&#x3C; 260787004 | Physical object (physical object) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) | OR &#x3C;&#x3C; 410607006 | Organism (organism) | OR &#x3C;&#x3C; 419891008 | Record artifact (record artifact) |</td></tr><tr><td>370132008 | Scale type (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 117364006 | Narrative value (qualifier value) | OR &#x3C;&#x3C; 117444000 | Text value (qualifier value) | OR &#x3C;&#x3C; 26716007 | Qualitative value (qualifier value) | OR &#x3C; 398195001 | Measurement scales (qualifier value) |</td></tr><tr><td>246501002 | Technique (attribute) |</td><td>1</td><td>0..*</td><td>0..*</td><td>&#x3C;&#x3C; 254291000 | Staging and scales (staging scale) | OR &#x3C;&#x3C; 272394005 | Technique (qualifier value) |</td></tr><tr><td>370134009 | Time aspect (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 7389001 | Time frame (qualifier value) |</td></tr><tr><td>704320005 | Towards (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 105590001 | Substance (substance) | OR &#x3C;&#x3C; 123037004 | Body structure (body structure) | OR &#x3C;&#x3C; 123038009 | Specimen (specimen) | OR &#x3C;&#x3C; 260787004 | Physical object (physical object) | OR &#x3C;&#x3C; 373873005 | Pharmaceutical / biologic product (product) | OR &#x3C;&#x3C; 410607006 | Organism (organism) | OR &#x3C;&#x3C; 419891008 | Record artifact (record artifact) |</td></tr><tr><td>246514001 | Units (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C; 767524001 | Unit of measure (qualifier value) |</td></tr><tr><td>424226004 | Using device (attribute) |</td><td>1</td><td>0..*</td><td>0..1</td><td>&#x3C;&#x3C; 49062001 | Device (physical object) |</td></tr></tbody></table>

<a href="https://docs.google.com/forms/d/e/1FAIpQLScTmbZIf0UEQwYDkY27EEWBkaiYkHSbR0_9DmFrMLXoQLyL7Q/viewform?usp=pp_url&#x26;entry.1767247133=SCT+Editorial+Guide&#x26;entry.670899847=Observable%20Entity%20Attributes%20Summary" class="button primary">Provide Feedback</a>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.snomed.org/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/observable-entity/observable-entity-attributes-summary.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.