2024 ICD-10-CM Diagnosis Code B39.4

Histoplasmosis capsulati, unspecified

ICD-10-CM Code:
ICD-10 Code for:
Histoplasmosis capsulati, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

B39.4 is a billable diagnosis code used to specify a medical diagnosis of histoplasmosis capsulati, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like B39.4 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Classical histoplasmosis intestinal ulceration
  • Classical histoplasmosis mediastinal granuloma
  • Classical histoplasmosis mucosal ulceration
  • Classical histoplasmosis mucosal ulceration
  • Classical histoplasmosis mucosal ulceration
  • Classical histoplasmosis nasal ulceration
  • Classical histoplasmosis oral ulceration
  • Classical histoplasmosis penile ulceration
  • Cutaneous histoplasmosis
  • Fungal infection of liver
  • Fungal meningitis
  • Histoplasma capsulatum with endocarditis
  • Histoplasma capsulatum with pericarditis
  • Histoplasma capsulatum with retinitis
  • Histoplasma infection of central nervous system
  • Histoplasmosis liver
  • Histoplasmosis with pericarditis
  • Histoplasmosis with retinitis
  • Infection by Histoplasma capsulatum
  • Meningitis caused by Histoplasma capsulatum
  • Meningitis caused by Histoplasmosis
  • Mycotic endocarditis
  • Oral mucosal fungal disease
  • Ulcer of nose

Clinical Classification

Clinical Information

  • Histoplasmosis

    infection resulting from exposure to the fungus histoplasma.
  • Histoplasma

    a mitosporic onygenales fungal genus causing histoplasmosis in humans and animals. its single species is histoplasma capsulatum which has two varieties: h. capsulatum var. capsulatum and h. capsulatum var. duboisii. its teleomorph is ajellomyces capsulatus.
  • Histoplasmosis

    a disease caused by the fungus histoplasma capsulatum. it primarily affects the lungs but can also occur as a disseminated disease that affects additional organs. the acute respiratory disease has symptoms similar to those of a cold or flu and it usually resolves without treatment in healthy individuals. the disseminated form is generally fatal if untreated.

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.

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • American histoplasmosis

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert B39.4 to ICD-9-CM

  • ICD-9-CM Code: 115.00 - Histoplasma capsulat NOS
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Histoplasmosis is a disease caused by a fungus (or mold) called Histoplasma. The fungus is common in the eastern and central United States. It grows in soil and material contaminated with bat or bird droppings. You get infected by breathing the fungal spores. You cannot get the infection from someone else.

Histoplasmosis is often mild, with no symptoms. If you do get sick, it usually affects your lungs. Symptoms include feeling ill, fever, chest pains, and a dry cough. In severe cases, histoplasmosis spreads to other organs. This is called disseminated disease. It is more common in infants, young children, older adults, and people with immune system problems.

Your doctor might do a variety of tests to make the diagnosis, including a chest x-ray, CT scan of the lungs, or examining blood, urine, or tissues for signs of the fungus. Mild cases usually get better without treatment. Treatment of severe or chronic cases is with antifungal drugs.

Centers for Disease Control and Prevention

[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.


[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.