B46 – Zygomycosis
ICD-10-CM 2027 diagnosis code · Mycoses
ICD-10-CM code
B46
- Code
B46(claims format:B46)- Description
- Zygomycosis
- 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
- B35-B49 Mycoses
Billable codes under B46
B46 is a header code and cannot be used on claims. Choose the most specific code:
- B46.0 – Pulmonary mucormycosisBillable
- B46.1 – Rhinocerebral mucormycosisBillable
- B46.2 – Gastrointestinal mucormycosisBillable
- B46.3 – Cutaneous mucormycosisBillable
- B46.4 – Disseminated mucormycosisBillable
- B46.5 – Mucormycosis, unspecifiedBillable
- B46.8 – Other zygomycosesBillable
- B46.9 – Zygomycosis, unspecifiedBillable
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block B35-B49
Frequently asked questions
What is ICD-10 code B46?
B46 is the ICD-10-CM code for zygomycosis, in the block B35-B49 (Mycoses).
Is B46 a billable code?
No. B46 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.