ICD-10 Code B60.12 – Conjunctivitis due to Acanthamoeba (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B60.12 – Conjunctivitis due to Acanthamoeba
What it is
B60.12 identifies conjunctivitis caused by Acanthamoeba, a protozoal infection affecting the conjunctiva. Use it when the record specifically documents this organism as the cause.
Clinical signs
Findings may include red eye, irritation, tearing, and conjunctival inflammation. Clinical features vary; refer to documentation, and confirm the organism is identified or clearly documented as the cause.
When to use this code
Use B60.12 when the provider documents conjunctivitis due to Acanthamoeba, including confirmed infection or a clearly stated diagnosis linked to that organism. It is appropriate when the note identifies the cause rather than a nonspecific conjunctivitis.
If the chart only says “conjunctivitis” without an organism, check documentation before assigning this code. Code the documented condition as written and avoid inferring Acanthamoeba from exposure history alone.
Do not use for
Do not use this code for viral, bacterial, allergic, or unspecified conjunctivitis. Do not assign it when Acanthamoeba is mentioned only as a concern or ruled out; check documentation.
Coding tip
Confirm the provider links conjunctivitis to Acanthamoeba in the assessment or final diagnosis before coding B60.12.