2026 ICD-10-CM Diagnosis Code B58.00Toxoplasma oculopathy, unspecified

ICD-10-CM Codes›A00–B99›B50-B64›B58

ICD-10-CM B58.00
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B58.00 is a billable ICD-10-CM diagnosis code for toxoplasma oculopathy, unspecified. 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 disorder of eye caused by Toxoplasma gondii. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified eye disorders; and Parasitic, other specified and unspecified infections.

Code Identity

ICD-10-CM Code
B58.00
Billable Status
Yes — Valid for Submission
Code Describes
Toxoplasma oculopathy, unspecified
Short Description
Toxoplasma oculopathy, unspecified
Same as the full description in the CMS dataset.
Parent Code
B58.0
Toxoplasma oculopathy

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB50-B64Protozoal diseases
CategoryB58Toxoplasmosis
This CodeB58.00Toxoplasma oculopathy, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder of eye caused by Toxoplasma gondii
  • Ocular toxoplasmosis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Toxoplasma, toxoplasmosis(acquired)
      • with
        • ocular involvement

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR EYE012
Other specified eye disorders
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR INF009
Parasitic, other specified and unspecified infections
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Eye Infections

Your eyes can get infections from bacteria, fungi, or viruses. Eye infections can occur in different parts of the eye and can affect just one eye or both. Two common eye infections are:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert B58.00 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
130.7 Toxoplasmosis site NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B58.00Overview

Is B58.00 (Toxoplasma oculopathy) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report toxoplasma oculopathy, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B58.00 group to?

When toxoplasma oculopathy, unspecified 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 B58.00?

Under the General Equivalence Mappings, toxoplasma oculopathy, unspecified 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.