2027 ICD-10-CM Diagnosis Code B58.83Toxoplasma tubulo-interstitial nephropathy
ICD-10-CM Codes›A00–B99›B50-B64›B58
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- 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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 791, 793, 867 through 869, 974 through 976. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 9 closely related codes. 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
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to B58.83: its own notes plus those printed at B58, block B50-B64, and Chapter 1. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- infection due to Toxoplasma gondii
- diseases generally recognized as communicable or transmissible
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Toxoplasma pyelonephritis
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify resistance to antimicrobial drugs (Z16.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name B58.83, its category, or a range that includes it.
Applicable To 1
These notes mention B58.83.
- O98.6 Protozoal diseases complicating pregnancy, childbirth and the puerperium
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disorder (of) See Also: Disease;
Pyelonephritis See Also: Nephritis, tubulo-interstitial;
toxoplasmosis B58.83
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Toxoplasmosis
the acquired form of infection by toxoplasma gondii in animals and man.
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.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert B58.83 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B58.83Overview
What is the ICD-10 code for toxoplasma tubulo-interstitial nephropathy?
The ICD-10-CM code for toxoplasma tubulo-interstitial nephropathy is B58.83 (sometimes written as B5883). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
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, 2026 through September 30, 2027.
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 793, 791, 974, 976, 975, 867, 869, 868, with relative weights from 0.6784 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.
Is B58.83 a CC or MCC?
CMS lists B58.83 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 9 closely related codes in its exclusion list.
Can B58.83 be reported with P37.1?
Not as a rule. The Excludes1 note at B58, which applies to B58.83, lists "congenital toxoplasmosis (P37.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
