ICD-10-CM 2027 diagnosis code

H91Other and unspecified hearing loss

Not billable — use a more specific code

H91 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About H91

H91 is the ICD-10-CM diagnosis code for other and unspecified hearing loss. It belongs to block H90-H94 (other disorders of ear) and chapter 8 (diseases of the ear and mastoid process). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: H91.0 (loss), H91.1 (Presbycusis), H91.2 (loss), H91.3 (classified), H91.8 (loss) and H91.9 (loss).

Don't report H91 together with the conditions in its Excludes1 note: abnormal auditory perception (H93.2-), hearing loss as classified in H90.-, impacted cerumen (H61.2-), noise-induced hearing loss (H83.3-) and 2 more.

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

Specific codes under H91

Coding notes

Excludes1Not coded here — never report together with this code

abnormal auditory perception (H93.2-)
hearing loss as classified in H90.-
impacted cerumen (H61.2-)
noise-induced hearing loss (H83.3-)
psychogenic deafness (F44.6)
transient ischemic deafness (H93.01-)

Notes that apply from higher levels

Instructions written at a parent level also apply to H91.

Broader instructions also apply from Chapter 8: Diseases of the ear and mastoid process.

Codes whose notes reference H91

F80.4Code also

Code history

2016
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2021
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2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about H91

Is H91 billable?: No. H91 is a header code. Report one of its more specific subcodes instead.