2024 ICD-10-CM Diagnosis Code B46.9

by

Zygomycosis, unspecified

  • B46.9 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 B46.9 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of B46.9 – other international versions of ICD-10 B46.9 may differ.

Applicable To

  • Phycomycosis NOS

The following code(s) above B46.9 contain annotation back-references

 that may be applicable to B46.9:

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

Approximate Synonyms

  • Zygomycosis

Clinical Information

  • Any infection due to a fungus of the zygomycota phylum. The disease typically involves the rhino-facial-cranial area, lungs, gastrointestinal tract, skin, or less commonly other organ systems. The infecting fungi have a predilection for invading vessels of the arterial system, causing embolization and subsequent necrosis of surrounding tissue.
  • Infection in humans and animals caused by fungi in the class zygomycetes. It includes mucormycosis and entomophthoramycosis. The latter is a tropical infection of subcutaneous tissue or paranasal sinuses caused by fungi in the order entomophthorales. Phycomycosis, closely related to zygomycosis, describes infection with members of phycomycetes, an obsolete classification.

ICD-10-CM B46.9 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 B46.9 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 B46.9: