ICD-10 Code B58.83 – Toxoplasma tubulo-interstitial nephropathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B58.83 – Toxoplasma tubulo-interstitial nephropathy
What it is
This code identifies tubulointerstitial kidney disease caused by Toxoplasma infection. Use it when documentation links toxoplasmosis to inflammation or injury of the renal tubules and interstitium.
Clinical signs
Clinical features vary; refer to documentation. You may see kidney dysfunction, abnormal urinalysis, or biopsy findings consistent with interstitial nephritis in the setting of confirmed toxoplasmosis.
When to use this code
Use B58.83 when the provider specifically documents toxoplasma tubulo-interstitial nephropathy, toxoplasmosis affecting the kidney, or renal involvement attributed to Toxoplasma gondii. Code it from the documented diagnosis, not from suspicion alone. Check documentation if the renal condition is described only as nonspecific nephritis.
Do not use for
Do not use this code for toxoplasmosis without kidney involvement or for general acute or chronic interstitial nephritis with no infectious cause stated. If the record does not clearly connect the nephropathy to Toxoplasma, check documentation.
Coding tip
Confirm that the link between toxoplasmosis and the renal disorder is explicitly documented before assigning B58.83.