ICD-10 Code H10.512 – Ligneous conjunctivitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.512 – Ligneous conjunctivitis, left eye
What it is
This code identifies ligneous conjunctivitis affecting the left eye. It refers to a rare, chronic inflammatory disorder of the conjunctiva with firm, woody-appearing membranes.
Clinical signs
Typical findings include recurrent, adherent pseudomembranes on the conjunctiva and persistent redness or swelling. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents ligneous conjunctivitis specifically in the left eye. It is appropriate when laterality is confirmed and the diagnosis is not described as bilateral or unspecified. Check documentation if the note mentions only conjunctivitis without the ligneous type.
Do not use for
Do not use this code for conjunctivitis of another type or for unspecified eye laterality. If the record does not clearly identify ligneous conjunctivitis, use the more accurate documented diagnosis.
Coding tip
Verify both the rare subtype and the left-eye laterality before assigning H10.512.