ICD-10 Code H11.21 – Conjunctival adhesions and strands (localized) (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.21 – Conjunctival adhesions and strands (localized)
What it is
H11.21 identifies localized bands or adhesions involving the conjunctiva, the thin membrane covering the eye and inner eyelids. Use it when documentation specifically describes conjunctival adhesions or strands in a limited area.
Clinical signs
Clinical features may include visible fibrous bands, tethering of conjunctival tissue, or restricted movement of the affected membrane. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record states localized conjunctival adhesions, strands, or similar scarring limited to part of the conjunctiva. It may apply after inflammation, surgery, trauma, or other documented eye conditions. Check documentation if the note does not clearly specify localization.
Do not use for
Do not use H11.21 for generalized conjunctival scarring, unspecified conjunctival disorders, or corneal adhesions. If the chart only says “eye scar” or gives another ocular site, you need a more precise code.
Coding tip
Confirm both the conjunctival site and the localized nature of the adhesions before assigning H11.21.