ICD-10-CM 2027 diagnosis code
H18.41Arcus senilis
H18.41 is a header code, so it can't be reported by itself. Choose one of the 4 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 H18.41
H18.41 is the ICD-10-CM diagnosis code for Arcus senilis. It belongs to category H18 (other disorders of cornea), 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.
Within H18.4 (corneal degeneration), H18.41 is specifically for Arcus senilis. Related codes cover unspecified corneal degeneration (H18.40), band keratopathy (H18.42), other calcerous corneal degeneration (H18.43), keratomalacia (H18.44), nodular corneal degeneration (H18.45), peripheral corneal degeneration (H18.46) and other corneal degeneration (H18.49).
To report this condition, pick the subcode that matches the documentation: H18.411 (right eye), H18.412 (left eye), H18.413 (bilateral) and H18.419 (unspecified eye).
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 H18.41
Coding notes
- Senile corneal changes
Notes that apply from higher levels
Instructions written at a parent level also apply to H18.41.
› From H18.4 Corneal degeneration
Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.
Alphabetic index entries
1 entriesTerms in the official ICD-10-CM index that lead to H18.41.
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 H18.41
Is H18.41 billable?
- No. H18.41 is a header code. Report one of its more specific subcodes instead.