ICD-10 Code H10.021 – Other mucopurulent conjunctivitis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.021 – Other mucopurulent conjunctivitis, right eye
What it is
This code identifies mucopurulent conjunctivitis affecting the right eye, with discharge that is both mucus-like and pus-like. Use it when the documentation specifies the right eye and does not name a more specific conjunctivitis type.
Clinical signs
Typical findings include conjunctival redness, eye discharge, and crusting or eyelid matting. Clinical features vary; refer to documentation for laterality and the exact conjunctivitis description.
When to use this code
Use H10.021 when the provider documents other mucopurulent conjunctivitis in the right eye. It is appropriate when the record clearly identifies the right eye and supports a non-specific mucopurulent conjunctival infection. If laterality is missing or another conjunctivitis subtype is stated, check documentation.
Do not use for
Do not use this code for left eye, bilateral, or unspecified conjunctivitis. Do not assign it when the chart names a different conjunctival disorder or another eye condition entirely.
Coding tip
Verify laterality in the note before assigning H10.021.