2025 ICD-10-CM Diagnosis Code B99

by

Other and unspecified infectious diseases

  • B99 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2024 edition of ICD-10-CM B99 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of B99 – other international versions of ICD-10 B99 may differ.

The following code(s) above B99 contain annotation back-references

 that may be applicable to B99:

  • A00-B99  Certain infectious and parasitic diseases

Approximate Synonyms

  • Acoustic neuritis due to infectious disease
  • Acoustic neuritis in infectious disease
  • Left acoustic neuritis due to infectious disease
  • Left acoustic neuritis in infectious disease
  • Right acoustic neuritis due to infectious disease
  • Right acoustic neuritis in infectious disease

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
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Code annotations containing back-references to B99:

  • Applicable To: Z83.1, Z86.1

Diagnosis Index entries containing back-references to B99:

  • ArthropathyM12.9 – see also Arthritis
    • postinfectious NEC B99
  • Conjunctivitis (staphylococcal) (streptococcal) H10.9
    • in (due to)
      • infectious disease NEC B99
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
    • in (due to)
      • infectious disease NEC B99
  • IridocyclitisH20.9
    • in (due to)
      • infectious disease NOS B99
  • Mastoiditis (coalescent) (hemorrhagic) (suppurative) H70.9-
    • in (due to)
      • infectious disease NEC B99
  • MyopathyG72.9
    • in (due to)
      • infectious disease NEC B99
  • Neuritis (rheumatoid) M79.2
    • acoustic (nerve) H93.3 – see also subcategory
      • in (due to)
        • infectious disease NEC B99
  • Otitis (acute) H66.90
    • externaH60.9-
      • in (due to)
        • infectious disease NEC B99
  • PalsyG83.9 – see also Paralysis
    • cranial nerve – see also Disorder, nerve, cranial
      • multipleG52.7
        • in
          • infectious disease B99
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) J18.9
    • postinfectional NEC B99
  • Polyneuropathy (peripheral) G62.9
    • in (due to)
      • infectious
        • disease NEC B99