ICD-10 Code B73.09 – Onchocerciasis with other eye involvement (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B73.09 – Onchocerciasis with other eye involvement
What it is
B73.09 identifies onchocerciasis, a parasitic infection caused by Onchocerca volvulus, when the eyes are involved in ways not captured by the more specific eye codes. Use it for documented ocular involvement beyond the listed categories.
Clinical signs
Clinical features vary; refer to documentation. Ocular disease may include eye irritation, photophobia, reduced vision, keratitis, uveitis, or other inflammatory changes linked to onchocerciasis.
When to use this code
Use B73.09 when the record confirms onchocerciasis and specifies eye involvement, but the documentation does not fit a more specific ocular subcode. It is appropriate for provider-documented ocular manifestations attributed to the infection. Check documentation if the eye findings are nonspecific or if another code describes the presentation better.
Do not use for
Do not use this code for onchocerciasis without eye involvement, or when the chart only mentions skin or subcutaneous disease. Avoid it if documentation supports a more specific eye code.
Coding tip
Code the infection and the documented eye involvement exactly as recorded; if the eye manifestation is unclear, check documentation before assigning B73.09.