B58.9 – Toxoplasmosis, unspecified
ICD-10-CM 2027 diagnosis code · Protozoal diseases
ICD-10-CM code
B58.9
- Code
B58.9(claims format:B589)- Description
- Toxoplasmosis, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- 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
- Parent codes
- B58
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
B58 – Toxoplasmosis
Includes:
- infection due to Toxoplasma gondii
Excludes1 (not coded here):
- congenital toxoplasmosis (P37.1)
Block B50-B64
Index terms for B58.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in B58
Frequently asked questions
What is ICD-10 code B58.9?
B58.9 is the ICD-10-CM code for toxoplasmosis, unspecified, in the block B50-B64 (Protozoal diseases).
Is B58.9 a billable code?
Yes. B58.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does B58.9 belong to?
It belongs to category B58 – Toxoplasmosis.
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.