ICD-10 Code B30.0 – Keratoconjunctivitis due to adenovirus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B30.0 – Keratoconjunctivitis due to adenovirus
What it is
This code identifies viral inflammation of the conjunctiva and cornea caused by adenovirus. Use it when documentation specifically links the eye infection to adenovirus.
Clinical signs
Typical findings include red, watery eyes, irritation, and corneal involvement that may blur vision. Clinical features vary; refer to documentation.
When to use this code
Use B30.0 when the provider documents adenoviral keratoconjunctivitis, epidemic keratoconjunctivitis, or a similar diagnosis tied to adenovirus. It is appropriate when the record shows both conjunctival and corneal involvement. If the organism is not stated, check documentation before assigning this code.
Do not use for
Do not use this code for nonspecific conjunctivitis without corneal involvement or when another cause is documented. If the viral cause is unclear, check documentation.
Coding tip
Code the documented adenoviral cause only when the provider clearly identifies it; otherwise, query or verify the record.