ICD-10 Code H10.533 – Contact blepharoconjunctivitis, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.533 – Contact blepharoconjunctivitis, bilateral
What it is
H10.533 identifies allergic or irritant inflammation affecting both the conjunctiva and eyelids after contact with an external substance. Use it when the record specifies bilateral contact blepharoconjunctivitis.
Clinical signs
Typical findings include red, itchy, watery eyes with eyelid irritation or swelling after exposure to an offending agent. Clinical features vary; refer to documentation.
When to use this code
Use H10.533 when the provider documents contact blepharoconjunctivitis in both eyes, such as after exposure to cosmetics, chemicals, or other irritants/allergens. Code from the note when laterality is clear and bilateral involvement is stated.
Do not use for
Do not use this code if the record describes a unilateral condition or a different conjunctivitis type. If the cause or laterality is unclear, check documentation.
Coding tip
Confirm both the contact cause and bilateral eye involvement before assigning H10.533.