2020 ICD-10-CM Diagnosis Code B02.21

Postherpetic geniculate ganglionitis

    2016 2017 2018 2019 2020 Billable/Specific Code
  • B02.21 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 B02.21 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of B02.21 - other international versions of ICD-10 B02.21 may differ.
The following code(s) above B02.21 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 B02.21:
  • 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
  • B02
    ICD-10-CM Diagnosis Code B02

    Zoster [herpes zoster]

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • shingles
    • zona
    Zoster [herpes zoster]
Approximate Synonyms
  • Herpes zoster auricularis
  • Ramsey hunt syndrome
Clinical Information
  • A syndrome characterized by facial palsy in association with a herpetic eruption of the external auditory meatus. This may occasionally be associated with tinnitus, vertigo, deafness, severe otalgia, and inflammation of the pinna. The condition is caused by reactivation of a latent herpesvirus 3, human infection which causes inflammation of the facial and vestibular nerves, and may occasionally involve additional cranial nerves. (from Adams et al., Principles of Neurology, 6th ed, p757)
  • A viral ear infection caused by the spread of varicella-zoster virus to the facial nerves. It is characterized by intense otalgia and a cutaneous vesicular eruption.
ICD-10-CM B02.21 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 073 Cranial and peripheral nerve disorders with mcc
  • 074 Cranial and peripheral nerve disorders without mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems
  • 974 Hiv with major related condition with mcc
  • 975 Hiv with major related condition with cc
  • 976 Hiv with major related condition without cc/mcc

Convert B02.21 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
Code annotations containing back-references to B02.21:
  • Type 1 Excludes: G51.1
    , G53
    ICD-10-CM Diagnosis Code G51.1

    Geniculate ganglionitis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • postherpetic geniculate ganglionitis (B02.21)
    ICD-10-CM Diagnosis Code G53

    Cranial nerve disorders in diseases classified elsewhere

      2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
    Code First
    • underlying disease, such as:
    • neoplasm (C00-D49)
    Type 1 Excludes
    • multiple cranial nerve palsy in sarcoidosis (D86.82)
    • multiple cranial nerve palsy in syphilis (A52.15)
    • postherpetic geniculate ganglionitis (B02.21)
    • postherpetic trigeminal neuralgia (B02.22)

Diagnosis Index entries containing back-references to B02.21:
  • Ganglionitis
    • geniculate G51.1
      ICD-10-CM Diagnosis Code G51.1

      Geniculate ganglionitis

        2016 2017 2018 2019 2020 Billable/Specific Code
      Type 1 Excludes
      • postherpetic geniculate ganglionitis (B02.21)
      • postherpetic, postzoster B02.21
    • gasserian B02.21 (postherpetic) (postzoster)
    • herpes zoster B02.21
    • postherpetic geniculate B02.21
  • Herpes, herpesvirus, herpetic B00.9
    ICD-10-CM Diagnosis Code B00.9

    Herpesviral infection, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Herpes simplex infection NOS
    • zoster B02.9
      - see also condition
      ICD-10-CM Diagnosis Code B02.9

      Zoster without complications

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Zoster NOS
      • auricularis B02.21
      • geniculate ganglionitis B02.21
      • oticus B02.21
    • geniculate ganglionitis B02.21
  • Hunt's
  • Neuralgia, neuralgic (acute) M79.2
    ICD-10-CM Diagnosis Code M79.2

    Neuralgia and neuritis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • Hunt's B02.21
  • Neuritis (rheumatoid) M79.2
    ICD-10-CM Diagnosis Code M79.2

    Neuralgia and neuritis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • geniculate ganglion G51.1
      ICD-10-CM Diagnosis Code G51.1

      Geniculate ganglionitis

        2016 2017 2018 2019 2020 Billable/Specific Code
      Type 1 Excludes
      • postherpetic geniculate ganglionitis (B02.21)
      • due to herpes B02.21 (zoster)
  • Ramsay-Hunt disease or syndrome B02.21 - see also Hunt's disease

ICD-10-CM Codes Adjacent To B02.21
B01.12 Varicella myelitis
B01.2 Varicella pneumonia
B01.8 Varicella with other complications
B01.81 Varicella keratitis
B01.89 Other varicella complications
B01.9 Varicella without complication
B02 Zoster [herpes zoster]
B02.0 Zoster encephalitis
B02.1 Zoster meningitis
B02.2 Zoster with other nervous system involvement
B02.21 Postherpetic geniculate ganglionitis
B02.22 Postherpetic trigeminal neuralgia
B02.23 Postherpetic polyneuropathy
B02.24 Postherpetic myelitis
B02.29 Other postherpetic nervous system involvement
B02.3 Zoster ocular disease
B02.30 …… unspecified
B02.31 Zoster conjunctivitis
B02.32 Zoster iridocyclitis
B02.33 Zoster keratitis
B02.34 Zoster scleritis

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