ICD-10 Code H10.219 – Acute toxic conjunctivitis, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.219 – Acute toxic conjunctivitis, unspecified eye
What it is
This code identifies an acute inflammation of the conjunctiva caused by a toxic or irritant exposure, affecting an unspecified eye. Use it when the record documents toxic conjunctivitis but does not specify left or right eye.
Clinical signs
Typical findings include conjunctival redness, irritation, tearing, and burning after exposure to a chemical or other irritant. Clinical features vary; refer to documentation.
When to use this code
Use H10.219 when the provider documents acute toxic conjunctivitis and the affected eye is not identified. It also fits notes describing conjunctival irritation from a toxic exposure without laterality. If the record names a specific eye, code the laterality instead.
Do not use for
Do not use this code for allergic, infectious, or chronic conjunctivitis. Check documentation if the note describes a foreign body injury, corneal involvement, or another eye disorder as the primary diagnosis.
Coding tip
Verify that the chart supports a toxic cause and unspecified laterality before assigning H10.219.