ICD-10 Code H10.229 – Pseudomembranous conjunctivitis, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.229 – Pseudomembranous conjunctivitis, unspecified eye
What it is
This code identifies pseudomembranous conjunctivitis affecting an unspecified eye. It means the conjunctiva has a false membrane, and the record does not specify right or left eye.
Clinical signs
Typical findings include conjunctival inflammation with a removable membrane or pseudomembrane on the eye surface. Clinical features vary; refer to documentation for laterality and any associated cause.
When to use this code
Use H10.229 when the provider documents pseudomembranous conjunctivitis but does not identify the eye involved. It also fits when the note confirms the condition without further laterality detail. If the record later specifies right or left eye, code that more specific option instead.
Do not use for
Do not use this code for conjunctivitis without a pseudomembrane or when the diagnosis is another conjunctival disorder. Check documentation if the condition is better described by a different etiology or a specified eye.
Coding tip
If laterality is missing, code the unspecified-eye option only after checking the full chart for a more specific eye designation.