> 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/body-structure/index-2.md).

# Morphologic Abnormality Modeling

<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>

The morphologic abnormality subhierarchy is located two levels below the Body structure hierarchy with\
siblings Apoptosis and Structure resulting from tissue repair process:

* SNOMED CT concept
  * Body structure (body structure)
    * Body structure, altered from its original anatomical structure (morphologic abnormality)
      * Apoptosis (morphologic abnormality)
      * Morphologically abnormal structure (morphologic abnormality)
      * Structure resulting from tissue repair process (morphologic abnormality)

The concepts in the morphologic abnormality hierarchy represent abnormal body structures.

{% hint style="warning" %}
**Leave Primitive**

The subhierarchy of 118956008 |Body structure, altered from its original anatomical structure (morphologic abnormality)| is to remain primitive. Authors are not to define morphologic abnormality concepts.
{% endhint %}

## Pages in this section:

* [Abscess](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/abscess.md)
* [Combining morphologies](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/combining-morphologies.md)
* [Congenital anomaly](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/congenital-anomaly.md)
* [Creating new morphologies](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/creating-new-morphologies.md)
* [Fracture](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/fracture.md)
* [Lump and mass](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/lump-and-mass.md)
* [Morphologic Abnormalities vs. Findings](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/morphologic-abnormalities-vs-findings.md)
* [Multiple x morphologic abnormality](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/multiple-x-morphologic-abnormality.md)
* [Tumor morphology](/education/snomed-ct-education-editorial-guide/readme/authoring/domain-specific-modeling/body-structure/index-2/tumor-morphology.md)

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