ICD-10 Code B58.89 – Toxoplasmosis with other organ involvement (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B58.89 – Toxoplasmosis with other organ involvement
What it is
B58.89 identifies toxoplasmosis affecting an organ or site not named by a more specific ICD-10 code. Use it when documentation shows toxoplasma infection with involvement beyond the common listed presentations.
Clinical signs
Clinical features vary; refer to documentation. Findings may reflect organ-specific infection, and the record should clearly link toxoplasmosis to the affected site or system.
When to use this code
Use B58.89 when the provider documents toxoplasmosis with involvement of another organ, and no more specific toxoplasmosis code applies. It is appropriate when the chart names the affected organ but does not fit cerebral, ocular, or congenital categories.
Assign the code only when the documentation supports active toxoplasma disease in that organ. If the record is vague, incomplete, or only notes exposure or history, check documentation before coding.
Do not use for
Do not use this code for toxoplasmosis that is specifically cerebral, ocular, or congenital. Also avoid it when toxoplasma infection is not confirmed or when the affected organ is not documented.
Coding tip
Match the code to the documented organ involvement, and query for specificity if the site is unclear.