ICD-10 Code B83.2 – Angiostrongyliasis due to Parastrongylus cantonensis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B83.2 – Angiostrongyliasis due to Parastrongylus cantonensis
What it is
B83.2 identifies angiostrongyliasis caused by Parastrongylus cantonensis, a parasitic infection most often affecting the nervous system. Use it when documentation clearly names this organism or this specific diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe eosinophilic meningitis, headache, neck stiffness, nausea, vomiting, and neurologic complaints when the infection involves the central nervous system.
When to use this code
Use this code when the provider documents angiostrongyliasis due to Parastrongylus cantonensis, or a confirmed infection by that parasite. It is appropriate for inpatient, outpatient, or problem-list coding when the diagnosis is established or clearly stated.
If the record only says suspected parasitic meningitis, check documentation before assigning B83.2. Code the condition only when the organism-specific diagnosis is supported in the chart.
Do not use for
Do not use this code for unspecified parasitic infections, other helminth infections, or eosinophilic meningitis without documented Parastrongylus cantonensis. Check documentation if the organism is not named.
Coding tip
Assign B83.2 only when the provider links the infection to Parastrongylus cantonensis by name.