2021 ICD-10-CM Diagnosis Code B33.22

Viral myocarditis

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • B33.22 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM B33.22 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of B33.22 - other international versions of ICD-10 B33.22 may differ.
The following code(s) above B33.22 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 B33.22:
  • 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
  • B33.2
    ICD-10-CM Diagnosis Code B33.2

    Viral carditis

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Coxsackie (virus) carditis
    Viral carditis
ICD-10-CM B33.22 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 314 Other circulatory system diagnoses with mcc
  • 315 Other circulatory system diagnoses with cc
  • 316 Other circulatory system diagnoses without cc/mcc

Convert B33.22 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
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to B33.22:
  • Type 1 Excludes: I41
    ICD-10-CM Diagnosis Code I41

    Myocarditis in diseases classified elsewhere

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
    Code First
    Type 1 Excludes

Diagnosis Index entries containing back-references to B33.22:
  • Coxsackie (virus) (infection) B34.1
    ICD-10-CM Diagnosis Code B34.1

    Enterovirus infection, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Coxsackievirus infection NOS
    • Echovirus infection NOS
    • myocarditis B33.22
  • Myocarditis (with arteriosclerosis)(chronic)(fibroid) (interstitial) (old) (progressive) (senile) I51.4
    ICD-10-CM Diagnosis Code I51.4

    Myocarditis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Chronic (interstitial) myocarditis
    • Myocardial fibrosis
    • Myocarditis NOS
    Type 1 Excludes
    • acute or subacute myocarditis (I40.-)
    • virus, viral I40.0
      ICD-10-CM Diagnosis Code I40.0

      Infective myocarditis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Septic myocarditis
      Use Additional
      • code (B95-B97) to identify infectious agent
      • of newborn B33.22 (Coxsackie)
    • aseptic of newborn B33.22
    • Coxsackie B33.22 (virus)
    • epidemic of newborn B33.22 (Coxsackie)

ICD-10-CM Codes Adjacent To B33.22
B30.2 Viral pharyngoconjunctivitis
B30.3 Acute epidemic hemorrhagic conjunctivitis (enteroviral)
B30.8 Other viral conjunctivitis
B30.9 Viral conjunctivitis, unspecified
B33 Other viral diseases, not elsewhere classified
B33.0 Epidemic myalgia
B33.1 Ross River disease
B33.2 Viral carditis
B33.20 …… unspecified
B33.21 Viral endocarditis
B33.22 Viral myocarditis
B33.23 Viral pericarditis
B33.24 Viral cardiomyopathy
B33.3 Retrovirus infections, not elsewhere classified
B33.4 Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS]
B33.8 Other specified viral diseases
B34 Viral infection of unspecified site
B34.0 Adenovirus infection, unspecified
B34.1 Enterovirus infection, unspecified
B34.2 Coronavirus infection, unspecified
B34.3 Parvovirus infection, unspecified

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