1. ICD-10-CM Codes
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2. A00-B99 Certain infectious and parasitic diseases
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3. B25-B34 Other viral diseases
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4. B33- Other viral diseases, not elsewhere classified
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5. 2021 ICD-10-CM Diagnosis Code B33.22

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.

• 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

• 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

• 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

  • underlying disease, such as:
  • typhus (A75.0-A75.9)

  Type 1 Excludes

  • myocarditis (in):
  • Chagas' disease (chronic) (B57.2)
  • acute (B57.0)
  • coxsackie (virus) infection (B33.22)
  • diphtheritic (A36.81)
  • gonococcal (A54.83)
  • influenzal (J09.X9, J10.82, J11.82)
  • meningococcal (A39.52)
  • mumps (B26.82)
  • rheumatoid arthritis (M05.31)
  • sarcoid (D86.85)
  • syphilis (A52.06)
  • toxoplasmosis (B58.81)
  • tuberculous (A18.84)

• 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)

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