Microtia, third degree

What it means

Presence of some auricular structures, but none of these structures conform to recognized ear components.

This malformation is commonly associated with atresia of the external canal, but that anomaly should be coded separately. Complete absence of the ear should be coded as Anotia.

Rare diseases that can present with this3

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Abnormal shape/structure of ear · Third-degree microtia