2024 ICD-10-CM Diagnosis Code B40.9

by

Blastomycosis, unspecified

  • B40.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM B40.9 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of B40.9 – other international versions of ICD-10 B40.9 may differ.

The following code(s) above B40.9 contain annotation back-references

 that may be applicable to B40.9:

  • A00-B99  Certain infectious and parasitic diseases
  • B35-B49  Mycoses
  • B40  Blastomycosis

Approximate Synonyms

  • Blastomycosis

Clinical Information

  • 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.
  • 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.
  • Infection caused by fungi of the genus blastomyces.

ICD-10-CM B40.9 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems
  • 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 B40.9 to ICD-9-CMCode 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
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to B40.9: