ICD-10 Code H10.222 – Pseudomembranous conjunctivitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.222 – Pseudomembranous conjunctivitis, left eye
What it is
This code identifies pseudomembranous conjunctivitis affecting the left eye. It means the conjunctiva has a false membrane, usually from significant inflammation or infection.
Clinical signs
Typical findings include conjunctival redness, irritation, tearing, and a visible adherent membrane on the eye surface. Clinical features vary; refer to documentation.
When to use this code
Use H10.222 when the provider documents pseudomembranous conjunctivitis in the left eye. It is appropriate when laterality is clearly stated and the diagnosis is confirmed in the chart.
If the record describes conjunctivitis without pseudomembrane, or does not specify the left eye, check documentation before coding. Do not assume laterality or membrane type.
Do not use for
Do not use this code for nonspecific conjunctivitis, right eye disease, or bilateral involvement. Check documentation if the record instead describes a different conjunctival disorder.
Coding tip
Always verify both the pseudomembranous feature and left-eye laterality before assigning H10.222.