2020 ICD-10-CM Diagnosis Code B49

Unspecified mycosis

    2016 2017 2018 2019 2020 Billable/Specific Code
  • B49 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM B49 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of B49 - other international versions of ICD-10 B49 may differ.
Applicable To
  • Fungemia NOS
The following code(s) above B49 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 B49:
  • A00-B99
    2020 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • 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
    2020 ICD-10-CM Range B35-B49

    Mycoses

    Type 2 Excludes
    • hypersensitivity pneumonitis due to organic dust (J67.-)
    • mycosis fungoides (C84.0-)
    Mycoses
Approximate Synonyms
  • Allergic bronchopulmonary mycosis
  • Arthropathy associated with a mycosis
  • Arthropathy associated with mycosis
  • Arthropathy with mycosis
  • Bilateral fungal keratitis
  • Fungal endocarditis
  • Fungal keratitis
  • Fungal meningitis
  • Fungal pneumonia
  • Fungal sinusitis
  • Invasive fungal sinusitis
  • Left fungal keratitis
  • Meningitis, fungal
  • Mycosis
  • Mycotic aneurysm
  • Mycotic endocarditis
  • Pneumonia due to fungus
  • Right fungal keratitis
Clinical Information
  • An infection caused by a fungus.
  • An infection caused by eukaryotic heterotrophic organisms that live as saprobes or parasites, including mushrooms, yeasts, smuts, molds, etc. They reproduce either sexually or asexually, and have life cycles that range from simple to complex. Filamentous fungi refer to those that grow as multicellular colonies (mushrooms and molds).
  • Disease caused by a fungus.
  • If you have ever had athlete's foot or a yeast infection, you can blame a fungus. A fungus is actually a primitive vegetable. 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.
  • The presence of fungi circulating in the blood. Opportunistic fungal sepsis is seen most often in immunosuppressed patients with severe neutropenia or in postoperative patients with intravenous catheters and usually follows prolonged antibiotic therapy.
ICD-10-CM B49 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 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

Convert B49 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

Diagnosis Index entries containing back-references to B49:
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90
    ICD-10-CM Diagnosis Code M19.90

    Unspecified osteoarthritis, unspecified site

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Arthrosis NOS
    • Arthritis NOS
    • Osteoarthritis NOS
    • in (due to)
      • mycosis NEC B49 - see also category M01
    • mycotic NEC B49 - see also category M01
  • Bronchomycosis NOS B49
  • Cough (affected) (chronic) (epidemic) (nervous) R05
    ICD-10-CM Diagnosis Code R05

    Cough

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • cough with hemorrhage (R04.2)
    • smoker's cough (J41.0)
    • tea taster's B49
  • Diarrhea, diarrheal (disease) (infantile) (inflammatory) R19.7
    ICD-10-CM Diagnosis Code R19.7

    Diarrhea, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Diarrhea NOS
    Type 1 Excludes
    • functional diarrhea (K59.1)
    • neonatal diarrhea (P78.3)
    • psychogenic diarrhea (F45.8)
    • mycotic NEC B49
  • Disease, diseased - see also Syndrome
    • fungus NEC B49
    • mycotic B49
  • Fungemia NOS B49
  • Fungus, fungous
    • disease NOS B49
  • Infection, infected, infective (opportunistic) B99.9
    ICD-10-CM Diagnosis Code B99.9

    Unspecified infectious disease

      2016 2017 2018 2019 2020 Billable/Specific Code
  • Keratomycosis B49
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic) G03.9
    ICD-10-CM Diagnosis Code G03.9

    Meningitis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Arachnoiditis (spinal) NOS
    • mycotic NEC B49
  • Mycelium infection B49
  • Mycosis, mycotic B49
  • Myositis M60.9
    ICD-10-CM Diagnosis Code M60.9

    Myositis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • in (due to)
      • mycosis B49
    • mycotic B49
  • Pneumomycosis B49

ICD-10-CM Codes Adjacent To B49
B47.0 Eumycetoma
B47.1 Actinomycetoma
B47.9 Mycetoma, unspecified
B48 Other mycoses, not elsewhere classified
B48.0 Lobomycosis
B48.1 Rhinosporidiosis
B48.2 Allescheriasis
B48.3 Geotrichosis
B48.4 Penicillosis
B48.8 Other specified mycoses
B49 Unspecified mycosis
B50 Plasmodium falciparum malaria
B50.0 Plasmodium falciparum malaria with cerebral complications
B50.8 Other severe and complicated Plasmodium falciparum malaria
B50.9 Plasmodium falciparum malaria, unspecified
B51 Plasmodium vivax malaria
B51.0 Plasmodium vivax malaria with rupture of spleen
B51.8 Plasmodium vivax malaria with other complications
B51.9 Plasmodium vivax malaria without complication
B52 Plasmodium malariae malaria
B52.0 Plasmodium malariae malaria with nephropathy

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