2021 ICD-10-CM Diagnosis Code B39.9

Histoplasmosis, unspecified

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • B39.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM B39.9 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of B39.9 - other international versions of ICD-10 B39.9 may differ.
The following code(s) above B39.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to B39.9:
  • A00-B99
    2021 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
  • B35-B49
    2021 ICD-10-CM Range B35-B49


    Type 2 Excludes
    • hypersensitivity pneumonitis due to organic dust (J67.-)
    • mycosis fungoides (C84.0-)
  • B39
    ICD-10-CM Diagnosis Code B39


      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code First
    • associated AIDS (B20)
    Use Additional
    • code for any associated manifestations, such as:
    • endocarditis (I39)
    • meningitis (G02)
    • pericarditis (I32)
    • retinitis (H32)
Approximate Synonyms
  • Bilateral ocular histoplasmosis syndrome
  • Histoplasma capsulatum with endocarditis
  • Histoplasma capsulatum with retinitis
  • Histoplasmosis
  • Histoplasmosis disseminated
  • Histoplasmosis endocarditis
  • Histoplasmosis meningitis
  • Histoplasmosis pericarditis
  • Histoplasmosis retinitis
  • Histoplasmosis syndrome of bilateral eyes
  • Histoplasmosis syndrome of left eye
  • Histoplasmosis syndrome of right eye
  • Histoplasmosis with meningitis
  • Histoplasmosis with pericarditis
  • L ocular histoplasmosis syndrome
  • R ocular histoplasmosis syndrome
  • Reticuloendothelial cytomycosis
Clinical Information
  • 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.
  • A kind of fungal infection
  • Histoplasmosis is a disease caused by a fungus (or mold.) 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. Disseminated disease is more common in infants, young children, seniors, and people with immune system problems.tests for histoplasmosis include blood or urine tests and tissue samples. Chest x-rays and ct scans may also help to diagnose it. Mild cases usually get better without treatment. Treatment of severe or chronic cases is with antifungal drugs. Centers for Disease Control and Prevention.
  • Infection resulting from inhalation or ingestion of spores of the fungus of the genus histoplasma, species h. Capsulatum. It is worldwide in distribution and particularly common in the midwestern United States. (from Dorland, 27th ed)
  • Infection resulting from inhalation or ingestion of spores of the fungus of the genus histoplasma; worldwide in distribution and particularly common in the midwestern United States.
ICD-10-CM B39.9 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 867 Other infectious and parasitic diseases diagnoses with mcc
  • 868 Other infectious and parasitic diseases diagnoses with cc
  • 869 Other infectious and parasitic diseases diagnoses without cc/mcc
  • 974 Hiv with major related condition with mcc
  • 975 Hiv with major related condition with cc
  • 976 Hiv with major related condition without cc/mcc

Convert B39.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to B39.9:

ICD-10-CM Codes Adjacent To B39.9
B38.81 Prostatic coccidioidomycosis
B38.89 Other forms of coccidioidomycosis
B38.9 Coccidioidomycosis, unspecified
B39 Histoplasmosis
B39.0 Acute pulmonary histoplasmosis capsulati
B39.1 Chronic pulmonary histoplasmosis capsulati
B39.2 Pulmonary histoplasmosis capsulati, unspecified
B39.3 Disseminated histoplasmosis capsulati
B39.4 Histoplasmosis capsulati, unspecified
B39.5 Histoplasmosis duboisii
B39.9 Histoplasmosis, unspecified
B40 Blastomycosis
B40.0 Acute pulmonary blastomycosis
B40.1 Chronic pulmonary blastomycosis
B40.2 Pulmonary blastomycosis, unspecified
B40.3 Cutaneous blastomycosis
B40.7 Disseminated blastomycosis
B40.8 Other forms of blastomycosis
B40.81 Blastomycotic meningoencephalitis
B40.89 Other forms of blastomycosis
B40.9 Blastomycosis, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.