Version 2024

2024 ICD-10-CM Diagnosis Code B40


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

B40 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of blastomycosis. 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 Blastomycosis

Non-specific codes like B40 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 blastomycosis:

  • Use B40.0 for Acute pulmonary blastomycosis - BILLABLE CODE

  • Use B40.1 for Chronic pulmonary blastomycosis - BILLABLE CODE

  • Use B40.2 for Pulmonary blastomycosis, unspecified - BILLABLE CODE

  • Use B40.3 for Cutaneous blastomycosis - BILLABLE CODE

  • Use B40.7 for Disseminated blastomycosis - BILLABLE CODE

  • B40.8 for Other forms of blastomycosis - NON-BILLABLE CODE

  • Use B40.81 for Blastomycotic meningoencephalitis - BILLABLE CODE

  • Use B40.89 for Other forms of blastomycosis - BILLABLE CODE

  • Use B40.9 for Blastomycosis, unspecified - BILLABLE CODE

Clinical Information

  • Blastomycosis

    a fungal infection that may appear in two forms: 1, a primary lesion characterized by the formation of a small cutaneous nodule and small nodules along the lymphatics that may heal within several months; and 2, chronic granulomatous lesions characterized by thick crusts, warty growths, and unusual vascularity and infection in the middle or upper lobes of the lung.
  • Lobomycosis

    a chronic, fungal, subcutaneous infection endemic in rural regions in south america and central america. the causal organism is lacazia labol.
  • Paracoccidioidomycosis

    a mycosis affecting the skin, mucous membranes, lymph nodes, and internal organs. it is caused most often by paracoccidioides brasiliensis. it is also called paracoccidioidal granuloma.
  • Blastomycosis

    a fungal infection caused by inhalation of spores of blastomyces dermatitidis. it presents with flu-like symptoms including fever, chills, cough, pleuritic chest pain and myalgias. it may lead to a chronic granulomatous pulmonary infection and disseminate to other anatomic sites including skin, nervous system and bones.
  • North American Blastomycosis|Blastomyces Dermatitidis Infection

    a pulmonary disease resulting from infection with blastomyces dermatitidis, which is prevalent in north america.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Brazilian blastomycosis B41
  • keloidal blastomycosis B48.0

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.