ICD-10-CM Code B39.9

Histoplasmosis, unspecified

Version 2020 Billable Code

Valid for Submission

B39.9 is a billable code used to specify a medical diagnosis of histoplasmosis, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code B39.9 might also be used to specify conditions or terms like classical histoplasmosis mediastinal fibrosis, cutaneous histoplasmosis, fungal meningitis, gingivitis due to histoplasma, histo spot, histoplasma infection of central nervous system, etc

Short Description:Histoplasmosis, unspecified
Long Description:Histoplasmosis, unspecified

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code B39.9 are found in the index:


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

  • Classical histoplasmosis mediastinal fibrosis
  • Cutaneous histoplasmosis
  • Fungal meningitis
  • Gingivitis due to Histoplasma
  • Histo spot
  • Histoplasma infection of central nervous system
  • Histoplasma infection of central nervous system
  • Histoplasma infection of central nervous system
  • Histoplasma infection of central nervous system
  • Histoplasmosis
  • Histoplasmosis associated with AIDS
  • Histoplasmosis of spinal cord
  • Histoplasmosis of spinal cord
  • Histoplasmosis syndrome of bilateral eyes
  • Histoplasmosis syndrome of left eye
  • Histoplasmosis syndrome of right eye
  • Histoplasmosis with pericarditis
  • Histoplasmosis with retinitis
  • Intramedullary abscess of spinal cord due to Histoplasma
  • Meningitis caused by Histoplasmosis
  • Ocular histoplasmosis syndrome
  • Primary cutaneous histoplasmosis
  • Spinal cord abscess
  • Subretinal neovascularization of left eye
  • Subretinal neovascularization of right eye

Clinical Information

  • HISTOPLASMOSIS-. infection resulting from exposure to the fungus histoplasma. it is worldwide in distribution and particularly common in the central and eastern states especially areas around the ohio and mississippi river valleys.

Diagnostic Related Groups

The ICD-10 code B39.9 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2020.


Convert B39.9 to ICD-9

  • 115.90 - Histoplasmosis NOS (Approximate Flag)

Code Classification

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


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

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