Conjunctivitis due to toxoplasmosis

This code describes inflammation of the conjunctiva, the membrane lining the eyelid and covering the white part of the eye, specifically caused by infection with the parasite Toxoplasma gondii. This ocular manifestation of toxoplasmosis can lead to redness, irritation, and discharge.

Assign this code when documentation clearly indicates conjunctivitis as a direct result of a confirmed or highly suspected toxoplasmosis infection. This diagnosis is typically supported by serological tests for toxoplasmosis and ophthalmological examination findings consistent with parasitic conjunctivitis.

• Ensure the physician explicitly links the conjunctivitis to toxoplasmosis; "conjunctivitis, etiology unknown" is insufficient.
• Consider co-reporting with codes for systemic toxoplasmosis if present (e.g., 130.0 for chorioretinitis due to toxoplasmosis).
• Distinguish from other forms of infectious conjunctivitis (e.g., bacterial, viral) which have different ICD-9-CM codes.