ICD-10-CM Billable Code

B58.83

Toxoplasma tubulo-interstitial nephropathy

Clinical Classification Guidelines

Inclusion Terms

  • Toxoplasma pyelonephritis

Medical Intelligence & Overview

Toxoplasma tubulo-interstitial nephropathy is a rare kidney condition caused by the infection of the kidney tissue with the parasite Toxoplasma gondii. This condition affects the tubulo-interstitial part of the kidney, which is vital for filtering blood and removing waste from the body. Recognized under ICD-10 code B58.83, this disease is often associated with toxoplasma pyelonephritis, an inflammation of the kidney due to infection. While Toxoplasma gondii is commonly known to cause toxoplasmosis, its ability to infect the kidneys and cause nephropathy is less widespread but significant, especially in immunocompromised individuals.

Causes & Symptoms

Clinical Causes: Primary infection with Toxoplasma gondii, particularly in immunocompromised individuals such as those with HIV/AIDS or undergoing immunosuppressive therapy. Reactivation of latent toxoplasma infection in the kidneys. Infection transmitted through contaminated food or water, or undercooked meat containing Toxoplasma cysts. Congenital transmission of Toxoplasma from mother to fetus.

Key Symptoms: Flank pain or kidney discomfort. Fever and chills. Fatigue and general malaise. Swelling in the legs, ankles, or around the eyes due to kidney impairment. Blood in urine (hematuria). Persistent urinary changes such as increased frequency or pain during urination. Elevated blood pressure.

Diagnostic & Treatment

Diagnosis Path: Diagnosing Toxoplasma tubulo-interstitial nephropathy involves a combination of clinical evaluation and laboratory tests. These include blood tests to detect Toxoplasma antibodies, urine tests, and imaging studies like ultrasound or CT scans to observe kidney abnormalities. Kidney biopsy might be performed to confirm the presence of infection and inflammation in kidney tissues, revealing characteristic signs of toxoplasmosis. Often, a healthcare provider will also consider the patient’s immune status and history to guide diagnosis.

Treatment Protocols: Treatment typically includes antiparasitic medications such as pyrimethamine combined with sulfadiazine, along with folinic acid to reduce side effects. Managing symptoms and supporting kidney function may also involve medications to control blood pressure and reduce inflammation. In severe cases or in immunocompromised patients, hospitalization and more aggressive therapy might be necessary. Regular monitoring of kidney function and infection status is essential to assess treatment response and adjust therapy accordingly.

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is B58.83 a billable ICD-10 code?
Yes, B58.83 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report B58.83?
Clinical documentation must specify the nature of Toxoplasma tubulo-interstitial nephropathy and any associated comorbidities for accurate reporting.

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