ICD-10 Code H10.012 – Acute follicular conjunctivitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.012 – Acute follicular conjunctivitis, left eye
What it is
H10.012 identifies acute follicular conjunctivitis affecting the left eye. It describes an acute inflammation of the conjunctiva with follicle formation, documented for the left eye only.
Clinical signs
Typical findings include conjunctival redness, irritation, tearing, and follicular reaction on exam. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents acute follicular conjunctivitis in the left eye. You may also use it when the record clearly specifies follicular conjunctivitis limited to the left eye and no more specific cause is stated.
Do not use for
Do not use this code for conjunctivitis of the right eye, both eyes, or unspecified eye. Check documentation if the condition is chronic, allergic, viral, or otherwise coded more specifically.
Coding tip
Always confirm laterality and the exact conjunctivitis type before assigning H10.012.