B58 – Toxoplasmosis
ICD-10-CM 2027 diagnosis code · Protozoal diseases
ICD-10-CM code
B58
- Code
B58(claims format:B58)- Description
- Toxoplasmosis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- B50-B64 Protozoal diseases
Billable codes under B58
B58 is a header code and cannot be used on claims. Choose the most specific code:
- B58.0 – Toxoplasma oculopathyHeader (more codes below)
- B58.1 – Toxoplasma hepatitisBillable
- B58.2 – Toxoplasma meningoencephalitisBillable
- B58.3 – Pulmonary toxoplasmosisBillable
- B58.8 – Toxoplasmosis with other organ involvementHeader (more codes below)
- B58.9 – Toxoplasmosis, unspecifiedBillable
Notes for B58
Includes:
- infection due to Toxoplasma gondii
Excludes1 (not coded here):
- congenital toxoplasmosis (P37.1)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block B50-B64
Frequently asked questions
What is ICD-10 code B58?
B58 is the ICD-10-CM code for toxoplasmosis, in the block B50-B64 (Protozoal diseases).
Is B58 a billable code?
No. B58 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.