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H91.90 — Unspecified hearing loss, unspecified ear
H91.90
What this code means
Hearing loss recorded without information about its type or the ear affected.
Also called: hearing loss, deafness.
When this code is used
Used for unspecified hearing loss of an unspecified ear.
Where it sits in ICD-10-CM
Code H91.90 belongs to Chapter 8: Diseases of the ear and mastoid process, which covers codes H60–H95 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related anatomy
Frequently asked questions
What is ICD-10-CM code H91.90?
H91.90 is the ICD-10-CM diagnosis code for “Unspecified hearing loss, unspecified ear”. Hearing loss recorded without information about its type or the ear affected.
When is code H91.90 used?
Used for unspecified hearing loss of an unspecified ear. It belongs to Chapter 8 of ICD-10-CM (Diseases of the ear and mastoid process).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.