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ICD-10-CM 2027

ICD-10 code for external ear canal exostosis

H61.81

Exostosis of external canal

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Exostosis › external ear canal”. Page updated September 29, 2026.

About coding external ear canal exostosis

The ICD-10-CM code for external ear canal exostosis is H61.81 (Exostosis of external canal).

Within H61.8 (other specified disorders of external ear), H61.81 is specifically for Exostosis of external canal. Related codes cover other specified disorders of external ear (H61.89).

To report this condition, pick the subcode that matches the documentation: H61.811 (canal), H61.812 (canal), H61.813 (bilateral) and H61.819 (unspecified ear).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about external ear canal exostosis ICD-10 codes

What is the ICD-10 code for external ear canal exostosis?

H61.81 — Exostosis of external canal (a header code; report a more specific subcode).

Is H61.81 billable?

No. H61.81 is a header code. Report one of its more specific subcodes instead.