Body Structure

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.

The 123037004 |Body structure (body structure)| subhierarchy includes both anatomical structures and morphologic abnormalities

Semantic tag	Example
Body structure	38033009 | Amputation stump (body structure) | 91134007 | Mitral valve structure (body structure) |
Morphologic abnormality	189955008 | Biopsy wound (morphologic abnormality) | 31470003 | Adenosarcoma (morphologic abnormality) |
Cell	250293008 | Agranular white blood cell (cell) | 57184004 | T lymphocyte (cell) |
Cell structure	4897009 | Cell membrane, prokaryotic (cell structure) | 362293000 | Entire axon (cell structure) |

The body structure domain includes anatomical structures, as well as morphologic abnormalities, as follows:

• Body structure (body structure)

  • Anatomical or acquired body structure (body structure)

  • Anatomical organizational pattern (body structure)

  • Anatomical site notations for tumor staging (body structure)

  • Body structure, altered from its original anatomical structure (morphologic abnormality)

  • Nonspecific site (body structure)

  • Normal anatomy (body structure)

  • Topography not assigned (body structure)

  • Topography unknown (body structure)

Tumor staging

Concepts under 258331007 | Anatomical site notations for tumor staging (body structure) | require review and reallocation.

Topics in this section

Body Structure Attributes SummaryAnatomical Concept ModelAnatomical Structure Naming ConventionsAnatomical Structure ModelingMorphologic Abnormality Modeling

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