ICD-10 Code H10.32 – Unspecified acute conjunctivitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.32 – Unspecified acute conjunctivitis, left eye
What it is
H10.32 identifies an acute inflammation of the conjunctiva in the left eye when the specific cause is not documented. Use it for a short-term conjunctivitis diagnosis limited to the left eye.
Clinical signs
Typical findings include conjunctival redness, irritation, tearing, and discharge. Clinical features vary; refer to documentation, especially when the record does not identify a specific infectious or allergic cause.
When to use this code
Use H10.32 when the provider documents acute conjunctivitis in the left eye and does not specify the etiology. It also fits cases where the chart confirms unilateral left-eye involvement but leaves the cause unspecified. Check documentation if bilateral disease or a different conjunctival disorder is recorded.
Do not use for
Do not use this code for chronic conjunctivitis, right eye disease, or bilateral conjunctivitis. If the provider names a specific type, such as allergic or viral conjunctivitis, code that documented condition instead.
Coding tip
Confirm laterality and acuity in the note before assigning H10.32.