ICD-10-CM 2027 diagnosis code

H80Otosclerosis

Not billable — use a more specific code

H80 is a header code, so it can't be reported by itself. Choose one of the 5 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 H80

H80 is the ICD-10-CM diagnosis code for otosclerosis. It belongs to block H80-H83 (diseases of inner 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 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: H80.0 (involving oval window, nonobliterative), H80.1 (involving oval window, obliterative), H80.2 (otosclerosis), H80.8 (otosclerosis) and H80.9 (otosclerosis).

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 H80

Coding notes

IncludesFurther defines the content of the category

Otospongiosis

Notes that apply from higher levels

Instructions written at a parent level also apply to H80.

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

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

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

Common questions about H80

Is H80 billable?: No. H80 is a header code. Report one of its more specific subcodes instead.