ICD-10 Code H18.213 – Corneal edema secondary to contact lens, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.213 – Corneal edema secondary to contact lens, bilateral
What it is
This code identifies swelling of the cornea in both eyes caused by contact lens wear. The cornea becomes waterlogged, which can blur vision and make the eyes uncomfortable.
Clinical signs
Typical findings include bilateral corneal haze or clouding, blurred vision, and contact lens intolerance. Clinical features vary; refer to documentation for evidence of edema linked to lens use.
When to use this code
Use H18.213 when the provider documents corneal edema in both eyes and ties it to contact lens wear. It is appropriate when the record clearly states the edema is secondary to lenses, not another corneal disorder. Check documentation if the cause is unclear.
Do not use for
Do not use this code for unilateral corneal edema or for edema from surgery, trauma, infection, or other non–contact lens causes. If the etiology is not documented, check documentation.
Coding tip
Confirm both laterality and causation in the note before assigning H18.213.