# Lesion

The word *lesion* can be used to refer to both structural and functional abnormalities. This makes a subtle distinction between the clinical finding and disorder semantic tags. The majority of lesions in SNOMED CT are in the disorder subhierarchy.

## Lesion as a disorder

If a concept refers to a lesion that is a structural abnormality, then apply the (disorder) semantic tag, and model with an 116676008 |Associated morphology (attribute)| of << 52988006 | Lesion (morphologic abnormality)| .

If a *procedure* refers to a lesion that is a structural abnormality, then model with a 405816004 |Procedure morphology (attribute)| of << 52988006 | Lesion (morphologic abnormality)|.

## Lesion as a finding

Lesion concepts referencing characteristics of a lesion are subtypes of 300577008 |Finding of lesion (finding)|.

Imaging-related lesion findings remain as finding concepts.

Functional lesions should not be modeled using values from the 52988006 |Lesion (morphologic abnormality)| subhierarchy.

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