Version 2024

2024 ICD-10-CM Diagnosis Code B46


ICD-10-CM Code:
ICD-10 Code for:
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

B46 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of zygomycosis. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Zygomycosis

Non-specific codes like B46 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for zygomycosis:

  • Use B46.0 for Pulmonary mucormycosis - BILLABLE CODE

  • Use B46.1 for Rhinocerebral mucormycosis - BILLABLE CODE

  • Use B46.2 for Gastrointestinal mucormycosis - BILLABLE CODE

  • Use B46.3 for Cutaneous mucormycosis - BILLABLE CODE

  • Use B46.4 for Disseminated mucormycosis - BILLABLE CODE

  • Use B46.5 for Mucormycosis, unspecified - BILLABLE CODE

  • Use B46.8 for Other zygomycoses - BILLABLE CODE

  • Use B46.9 for Zygomycosis, unspecified - BILLABLE CODE

Clinical Information

  • Zygomycosis

    infection in humans and animals caused by fungi in the class zygomycetes. it includes mucormycosis and entomophthoramycosis. the latter is a tropical infection of subcutaneous tissue or paranasal sinuses caused by fungi in the order entomophthorales. phycomycosis, closely related to zygomycosis, describes infection with members of phycomycetes, an obsolete classification.
  • Mucormycosis

    infection in humans and animals caused by any fungus in the order mucorales (e.g., rhizopus; mucor; cunninghamella; apophysomyces; absidia; saksenaea and rhizomucor) there are many clinical types associated with infection including central nervous system, lung, gastrointestinal tract, skin, orbit and paranasal sinuses. in humans, it usually occurs as an opportunistic infection.

Patient Education

Fungal Infections

If you have ever had athlete's foot or a yeast infection, you can blame a fungus. A fungus is a primitive organism. Mushrooms, mold and mildew are examples. Fungi live in air, in soil, on plants and in water. Some live in the human body. Only about half of all types of fungi are harmful.

Some fungi reproduce through tiny spores in the air. You can inhale the spores or they can land on you. As a result, fungal infections often start in the lungs or on the skin. You are more likely to get a fungal infection if you have a weakened immune system or take antibiotics.

Fungi can be difficult to kill. For skin and nail infections, you can apply medicine directly to the infected area. Oral antifungal medicines are also available for serious infections.

[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.