ICD-10 Code H10.22 – Pseudomembranous conjunctivitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.22 – Pseudomembranous conjunctivitis
What it is
Pseudomembranous conjunctivitis is inflammation of the conjunctiva with a removable membrane or film on the eye surface. The code identifies this specific conjunctival finding, not a broader eye infection.
Clinical signs
Typical findings include conjunctival redness, irritation, tearing, and a pseudomembrane that may be seen on exam. Clinical features vary; refer to documentation.
When to use this code
Use H10.22 when the provider documents pseudomembranous conjunctivitis or a conjunctival membrane consistent with that diagnosis. Apply it for either eye if laterality is not specified in the record. If the note only says conjunctivitis without membrane, check documentation.
Do not use for
Do not use this code for simple conjunctivitis without a pseudomembrane. It is also not appropriate when the record describes a different ocular membrane or an unspecified eye inflammation.
Coding tip
Confirm that the chart explicitly documents a pseudomembrane before assigning H10.22.