ICD-10 Code H17.1 – Central corneal opacity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H17.1 – Central corneal opacity
What it is
H17.1 identifies a central corneal opacity, meaning a scar or clouding in the middle of the cornea that can affect vision. Use it when the record specifically documents central corneal haze, scar, or opacity.
Clinical signs
Typical findings include visible corneal clouding on exam and reduced visual clarity when the opacity involves the visual axis. Clinical features vary; refer to documentation.
When to use this code
Use H17.1 when the provider documents a central corneal opacity as the diagnosis, whether due to prior injury, infection, or other corneal scarring. It may also apply when the note describes a central corneal scar or central haze affecting vision. Check documentation if the location is not clearly central.
Do not use for
Do not use this code for peripheral corneal opacities or nonspecific corneal disorders without central involvement. If the chart does not clearly identify an opacity, check documentation.
Coding tip
Confirm the opacity is documented as central, since corneal scars in other locations require a different code.