2021 ICD-10-CM Diagnosis Code B99

Other and unspecified infectious diseases

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • B99 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM B99 became effective on October 1, 2020.
  • 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
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 B99:
  • A00-B99
    2021 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
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
Code annotations containing back-references to B99:
  • Applicable To: Z83.1
    , Z86.1
    ICD-10-CM Diagnosis Code Z83.1

    Family history of other infectious and parasitic diseases

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    ICD-10-CM Diagnosis Code Z86.1

    Personal history of infectious and parasitic diseases

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    Type 1 Excludes
    • personal history of infectious diseases specific to a body system
    • sequelae of infectious and parasitic diseases (B90-B94)

Diagnosis Index entries containing back-references to B99:
  • Arthropathy M12.9
    - see also Arthritis
    ICD-10-CM Diagnosis Code M12.9

    Arthropathy, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • Conjunctivitis (staphylococcal) (streptococcal) H10.9
    ICD-10-CM Diagnosis Code H10.9

    Unspecified conjunctivitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • in (due to)
      • infectious disease NEC B99
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
    ICD-10-CM Diagnosis Code G04.90

    Encephalitis and encephalomyelitis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Ventriculitis (cerebral) NOS
    • in (due to)
      • infectious disease NEC B99
  • Iridocyclitis H20.9
    ICD-10-CM Diagnosis Code H20.9

    Unspecified iridocyclitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Uveitis NOS
    • in (due to)
      • infectious disease NOS B99
  • Mastoiditis (coalescent) (hemorrhagic) (suppurative) H70.9-
    ICD-10-CM Diagnosis Code H70.9-

    Unspecified mastoiditis

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    • in (due to)
      • infectious disease NEC B99
  • Myopathy G72.9
    ICD-10-CM Diagnosis Code G72.9

    Myopathy, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • in (due to)
      • infectious disease NEC B99
  • Neuritis (rheumatoid) M79.2
    ICD-10-CM Diagnosis Code M79.2

    Neuralgia and neuritis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Type 1 Excludes
    • acoustic (nerve) H93.3
      - see also subcategory
      ICD-10-CM Diagnosis Code H93.3

      Disorders of acoustic nerve

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      Applicable To
      • Disorder of 8th cranial nerve
      Type 1 Excludes
      • acoustic neuroma (D33.3)
      • syphilitic acoustic neuritis (A52.15)
      • in (due to)
        • infectious disease NEC B99
  • Otitis (acute) H66.90
    ICD-10-CM Diagnosis Code H66.90

    Otitis media, unspecified, unspecified ear

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • externa H60.9-
      ICD-10-CM Diagnosis Code H60.9-

      Unspecified otitis externa

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      • in (due to)
        • infectious disease NEC B99
  • Palsy G83.9
    - see also Paralysis
    ICD-10-CM Diagnosis Code G83.9

    Paralytic syndrome, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) J18.9
    ICD-10-CM Diagnosis Code J18.9

    Pneumonia, unspecified organism

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • postinfectional NEC B99
  • Polyneuropathy (peripheral) G62.9
    ICD-10-CM Diagnosis Code G62.9

    Polyneuropathy, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Neuropathy NOS

ICD-10-CM Codes Adjacent To B99
B97.34 Human T-cell lymphotrophic virus, type II [HTLV-II] as the cause of diseases classified elsewhere
B97.35 Human immunodeficiency virus, type 2 [HIV 2] as the cause of diseases classified elsewhere
B97.39 Other retrovirus as the cause of diseases classified elsewhere
B97.4 Respiratory syncytial virus as the cause of diseases classified elsewhere
B97.5 Reovirus as the cause of diseases classified elsewhere
B97.6 Parvovirus as the cause of diseases classified elsewhere
B97.7 Papillomavirus as the cause of diseases classified elsewhere
B97.8 Other viral agents as the cause of diseases classified elsewhere
B97.81 Human metapneumovirus as the cause of diseases classified elsewhere
B97.89 Other viral agents as the cause of diseases classified elsewhere
B99 Other and unspecified infectious diseases
B99.8 Other infectious disease
B99.9 Unspecified infectious disease
C00 Malignant neoplasm of lip
C00.0 Malignant neoplasm of external upper lip
C00.1 Malignant neoplasm of external lower lip
C00.2 Malignant neoplasm of external lip, unspecified
C00.3 Malignant neoplasm of upper lip, inner aspect
C00.4 Malignant neoplasm of lower lip, inner aspect
C00.5 Malignant neoplasm of lip, unspecified, inner aspect
C00.6 Malignant neoplasm of commissure of lip, unspecified

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