ICD-10-CM 2027 diagnosis code
H16.1Other and unspecified superficial keratitis without conjunctivitis
H16.1 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.Short description: Other and unsp superficial keratitis without conjunctivitis
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 H16.1
H16.1 is the ICD-10-CM diagnosis code for other and unspecified superficial keratitis without conjunctivitis. It belongs to category H16 (keratitis), 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 5 subcodes must be used instead.
Within H16, choose H16.1 (Other and unspecified superficial keratitis without conjunctivitis) only when documentation doesn't support a more specific option: corneal ulcer (H16.0), keratoconjunctivitis (H16.2), interstitial and deep keratitis (H16.3), corneal neovascularization (H16.4), other keratitis (H16.8) and unspecified keratitis (H16.9).
To report this condition, pick the subcode that matches the documentation: H16.10 (keratitis), H16.11 (keratitis), H16.12 (keratitis), H16.13 (Photokeratitis) and H16.14 (keratitis).
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 H16.1
Notes that apply from higher levels
Instructions written at a parent level also apply to H16.1.
Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.
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 H16.1
Is H16.1 billable?
- No. H16.1 is a header code. Report one of its more specific subcodes instead.