ICD-10 Code B30.8 – Other viral conjunctivitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B30.8 – Other viral conjunctivitis
What it is
B30.8 identifies viral conjunctivitis caused by a virus not classified elsewhere. Use it for conjunctival inflammation when the record specifies a viral cause, but not adenovirus, enterovirus, or another named subtype.
Clinical signs
Typical findings include red eye, tearing, irritation, and watery discharge. Clinical features vary; refer to documentation, especially when the note distinguishes viral conjunctivitis from allergic or bacterial disease.
When to use this code
Use B30.8 when the provider documents “other viral conjunctivitis,” “viral conjunctivitis NOS,” or a specific viral conjunctivitis that maps here. It is appropriate when the infection is clearly viral and the chart does not support a more specific ICD-10 option. Check documentation if the organism is not identified.
Do not use for
Do not use this code for bacterial, allergic, or nonspecific conjunctivitis without a viral diagnosis. Also avoid it when the record names a different viral conjunctivitis code or when the documentation is too limited.
Coding tip
Match the code to the provider’s exact wording and confirm whether a more specific viral conjunctivitis code applies.