B46Header code — not billable

Zygomycosis

Chapter
1. Certain infectious and parasitic diseases
Category
B46
Effective date
October 1, 2026

Related codes in category B46

B46.0Pulmonary mucormycosisYesB46.1Rhinocerebral mucormycosisYesB46.2Gastrointestinal mucormycosisYesB46.3Cutaneous mucormycosisYesB46.4Disseminated mucormycosisYesB46.5Mucormycosis, unspecifiedYesB46.8Other zygomycosesYesB46.9Zygomycosis, unspecifiedYes

Frequently asked questions

What is ICD-10 code B46?

B46 is an ICD-10-CM diagnosis code for Zygomycosis.

Is B46 a billable code?

No. B46 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is B46 in?

B46 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B46 become effective?

B46 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B46?

B46 belongs to category B46, which includes 8 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.