2026 ICD-10-CM Diagnosis Code B58.01Toxoplasma chorioretinitis
ICD-10-CM Codes›A00–B99›B50-B64›B58
- Billable — Valid for Submission
- Not Chronic
B58.01 is a billable ICD-10-CM diagnosis code for toxoplasma chorioretinitis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 124 through 125, 974 through 976. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Parasitic, other specified and unspecified infections; and Retinal and vitreous conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acquired disseminated toxoplasmosis
- Acute toxoplasmosis chorioretinitis
- Bilateral retinitis of eyes caused by Toxoplasma gondii
- Bilateral Toxoplasma choroiditis
- Chorioretinitis of bilateral eyes caused by Toxoplasma gondii
- Chorioretinitis of left eye caused by Toxoplasma gondii
- Chorioretinitis of right eye caused by Toxoplasma gondii
- Choroiditis of left eye caused by Toxoplasma gondii
- Choroiditis of right eye caused by Toxoplasma gondii
- Focal chorioretinitis due to acquired disseminated toxoplasmosis
- Inactive toxoplasmosis chorioretinitis
- Infection causing inflammation of optic nerve
- Multisystemic disseminated toxoplasmosis
- Parasitic chorioretinitis
- Parasitic infection of cranial nerve
- Posterior uveitis due to infectious disease
- Punctate outer retinal toxoplasmosis
- Reactivation of toxoplasmosis chorioretinitis
- Retinitis of left eye caused by Toxoplasma
- Retinitis of right eye caused by Toxoplasma
- Toxoplasma choroiditis
- Toxoplasma neuroretinitis
- Toxoplasma retinitis
- Toxoplasmosis chorioretinitis
- Uveitis of bilateral eyes caused by Toxoplasma gondii
- Uveitis of left eye caused by Toxoplasma gondii
- Uveitis of right eye caused by Toxoplasma gondii
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Chorioretinitis - See Also: Inflammation, chorioretinal;
- toxoplasmosis (acquired) - B58.01
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Chorioretinitis
- in (due to)
- toxoplasmosis (acquired)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 B58.01 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B58.01Overview
Is B58.01 (Toxoplasma oculopathy) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report toxoplasma chorioretinitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does B58.01 group to?
When toxoplasma chorioretinitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 124, 125, 974, 975, 976, with relative weights from 0.7678 to 2.8860 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of B58.01?
Under the General Equivalence Mappings, toxoplasma chorioretinitis converts to ICD-9-CM 130.2 (toxoplasm chorioretinit). The mapping is a direct match.
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.
