ICD-10 Code H10.821 – Rosacea conjunctivitis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.821 – Rosacea conjunctivitis, right eye
What it is
This code identifies rosacea-related inflammation of the conjunctiva in the right eye. Use it when documentation specifically links the eye findings to rosacea.
Clinical signs
Typical findings may include red, irritated conjunctiva, eye burning, tearing, and lid margin inflammation. Clinical features vary; refer to documentation.
When to use this code
Use H10.821 when the clinician documents rosacea conjunctivitis affecting the right eye only. It is appropriate when the record supports ocular involvement associated with rosacea rather than a nonspecific conjunctivitis diagnosis. Check documentation if laterality is unclear.
Do not use for
Do not use this code for conjunctivitis without a documented rosacea cause or when the left eye, both eyes, or unspecified eye is reported. Do not assume rosacea involvement from facial rosacea alone.
Coding tip
Confirm both the rosacea association and right-eye laterality in the note before assigning H10.821.