ICD-10 Code B58.2 – Toxoplasma meningoencephalitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B58.2 – Toxoplasma meningoencephalitis
What it is
B58.2 identifies toxoplasma infection involving the brain and meninges. Use it when documentation specifies toxoplasma meningoencephalitis rather than a more general toxoplasmosis diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include neurologic deficits, headache, altered mental status, seizures, or focal brain lesions consistent with central nervous system involvement.
When to use this code
Use B58.2 when the provider documents toxoplasma meningoencephalitis, toxoplasmic encephalitis, or similar wording indicating meningeal and brain involvement. It also applies when the diagnosis is confirmed and the record links the condition to Toxoplasma infection. Check documentation if the note only says toxoplasmosis without CNS involvement.
Do not use for
Do not use this code for isolated toxoplasmosis without central nervous system disease. Do not assign it when the record describes a different neurologic infection or when documentation is unclear.
Coding tip
Query the provider if the note mentions neurologic toxoplasmosis but does not clearly state meningoencephalitis.