1. ICD-10-CM Codes
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2. A00-B99
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3. B25-B34
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4. B33-
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5. 2023 ICD-10-CM Diagnosis Code B33.23

2023 ICD-10-CM Diagnosis Code B33.23

Viral pericarditis

2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

• B33.23 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2023 edition of ICD-10-CM B33.23 became effective on October 1, 2022.
• This is the American ICD-10-CM version of B33.23 - other international versions of ICD-10 B33.23 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 B33.23 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
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change

• Code Also: M35.81
  ICD-10-CM Diagnosis Code M35.81

  Multisystem inflammatory syndrome

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Applicable To

  • MIS-A
  • MIS-C
  • Multisystem inflammatory syndrome in adults
  • Multisystem inflammatory syndrome in children
  • Pediatric inflammatory multisystem syndrome
  • PIMS

  Code First

  • , if applicable, COVID-19 (U07.1)

  Code Also

  • any associated complications such as:
  • acute hepatic failure (K72.0-)
  • acute kidney failure (N17.-)
  • acute myocarditis (I40.-)
  • acute respiratory distress syndrome (J80)
  • cardiac arrhythmia (I47-I49.-)
  • pneumonia due to COVID-19 (J12.82)
  • severe sepsis (R65.2-)
  • viral cardiomyopathy (B33.24)
  • viral pericarditis (B33.23)

  Use Additional

  • code, if applicable, for:
  • exposure to COVID-19 or SARS-CoV-2 infection (Z20.822)
  • personal history of COVID-19 (Z86.16)
  • post COVID-19 condition (U09.9)
• Type 1 Excludes: I32
  , I30
  ICD-10-CM Diagnosis Code I32

  Pericarditis in diseases classified elsewhere

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Manifestation Code

  Code First

  • underlying disease

  Type 1 Excludes

  • pericarditis (in):
  • coxsackie (virus) (B33.23)
  • gonococcal (A54.83)
  • meningococcal (A39.53)
  • rheumatoid (arthritis) (M05.31)
  • syphilitic (A52.06)
  • systemic lupus erythematosus (M32.12)
  • tuberculosis (A18.84)
  ICD-10-CM Diagnosis Code I30

  Acute pericarditis

  2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code

  Includes

  • acute mediastinopericarditis
  • acute myopericarditis
  • acute pericardial effusion
  • acute pleuropericarditis
  • acute pneumopericarditis

  Type 1 Excludes

  • Dressler's syndrome (I24.1)
  • rheumatic pericarditis (acute) (I01.0)
  • viral pericarditis due to Coxsakie virus (B33.23)

• Coxsackie (virus) (infection) B34.1
  ICD-10-CM Diagnosis Code B34.1

  Enterovirus infection, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Applicable To

  • Coxsackievirus infection NOS
  • Echovirus infection NOS
  • pericarditis B33.23
• Pericarditis (with decompensation) (with effusion) I31.9
  ICD-10-CM Diagnosis Code I31.9

  Disease of pericardium, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Applicable To

  • Pericarditis (chronic) NOS
  • coxsackie B33.23

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