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ICD-10-CM 2027

ICD-10 code for sudden idiopathic deafness

H91.2

Sudden idiopathic hearing loss

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Deafness (acquired) (complete) (hereditary) (partial) › sudden (idiopathic)”. Page updated September 29, 2026.

About coding sudden idiopathic deafness

The ICD-10-CM code for sudden idiopathic deafness is H91.2 (Sudden idiopathic hearing loss).

Within H91 (other and unspecified hearing loss), H91.2 is specifically for sudden idiopathic hearing loss. Related codes cover Ototoxic hearing loss (H91.0), Presbycusis (H91.1), Deaf nonspeaking, not elsewhere classified (H91.3), other specified hearing loss (H91.8) and unspecified hearing loss (H91.9).

To report this condition, pick the subcode that matches the documentation: H91.20 (unspecified ear), H91.21 (right ear), H91.22 (left ear) and H91.23 (bilateral).

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 sudden idiopathic deafness ICD-10 codes

What is the ICD-10 code for sudden idiopathic deafness?

H91.2 — Sudden idiopathic hearing loss (a header code; report a more specific subcode).

Is H91.2 billable?

No. H91.2 is a header code. Report one of its more specific subcodes instead.