ICD-10 Code H11.432 – Conjunctival hyperemia, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.432 – Conjunctival hyperemia, left eye
What it is
This code identifies redness of the conjunctiva in the left eye. It describes increased blood flow or irritation affecting the clear membrane covering the white of the eye.
Clinical signs
Typical findings include visible conjunctival redness, often with mild irritation or a bloodshot appearance. Clinical features vary; refer to documentation.
When to use this code
Use H11.432 when the provider documents conjunctival hyperemia limited to the left eye. It is appropriate when the record specifically identifies left-sided conjunctival redness without a more specific underlying diagnosis. If another condition explains the finding, code the documented cause instead.
Do not use for
Do not use this code for generalized eye redness without left-eye specificity. Do not assign it when the redness is documented as part of another diagnosed eye disorder; check documentation.
Coding tip
Confirm laterality in the note before coding, because H11.432 is left eye only.