ICD-10-CM 2027 diagnosis code

H17Corneal scars and opacities

Not billable — use a more specific code

H17 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Looking up by condition? See ICD-10 code for Cornea opacity.

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 H17

H17 is the ICD-10-CM diagnosis code for corneal scars and opacities. It belongs to block H15-H22 (disorders of sclera, cornea, iris and ciliary body) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: H17.0 (leukoma), H17.1 (opacity), H17.8 (opacities) and H17.9 (opacity).

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 H17

Notes that apply from higher levels

Instructions written at a parent level also apply to H17.

Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to H17.

Opacity, opacities › cornea

Codes whose notes reference H17

L51Use additional code

Code history

2016
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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 H17

Is H17 billable?: No. H17 is a header code. Report one of its more specific subcodes instead.