2026 ICD-10-CM Diagnosis Code B58.83Toxoplasma tubulo-interstitial nephropathy
ICD-10-CM Codes›A00–B99›B50-B64›B58
- Billable — Valid for Submission
- Not Chronic
B58.83 is a billable ICD-10-CM diagnosis code for toxoplasma tubulo-interstitial nephropathy. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 867 through 869, 974 through 976. Coders also document this condition as renal coccidiosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nephritis; nephrosis; renal sclerosis; and Parasitic, other specified and unspecified infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Renal coccidiosis
- Toxoplasma tubulointerstitial nephropathy
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Toxoplasma pyelonephritis
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Disorder (of) - See Also: Disease;
- toxoplasmosis - B58.83
- Pyelonephritis - See Also: Nephritis, tubulo-interstitial;
- toxoplasmosis - B58.83
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Disorder(of)
- tubulo-interstitial (in)
- toxoplasmosis
- Pyelonephritis
- in (due to)
- toxoplasmosis
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Kidney Diseases
You have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters.
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Convert B58.83 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B58.83Overview
Is B58.83 (Toxoplasmosis with other organ involvement) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report toxoplasma tubulo-interstitial nephropathy on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does B58.83 group to?
When toxoplasma tubulo-interstitial nephropathy is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 868, 869, 974, 975, 976, with relative weights from 0.7297 to 2.8860 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of B58.83?
Under the General Equivalence Mappings, toxoplasma tubulo-interstitial nephropathy converts to ICD-9-CM 130.7 (toxoplasmosis site NEC). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
