Diagnosis Code


Code Information

Diagnosis Code: B33.21

Short Description: Viral endocarditis

Long Description: Viral endocarditis

The code B33.21 is VALID for claim submission

Code Classification:

  • Certain infectious and parasitic diseases (A00–B99)
    • Other viral diseases (B25-B34)
      • Other viral diseases, not elsewhere classified (B33)
        • B33.21 Viral endocarditis

Code Version: 2018 ICD-10-CM


  • Coxsackie carditis
  • Coxsackie endocarditis
  • Enterovirus heart infection
  • Viral endocarditis

Diagnostic Related Group(s)

The code B33.21 is grouped in the following Diagnostic Related Group(s) (MS-DRG v34.0)
  • Cardiac Congenital And Valvular Disorders With Mcc (306)
  • Cardiac Congenital And Valvular Disorders Without Mcc (307)

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
B33.21 Right Arrow 074.22 Coxsackie endocarditis
This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
B33 Other viral diseases, not elsewhere classified
B33.0 Epidemic myalgia
B33.1 Ross River disease
B33.2 Viral carditis
B33.20 Viral carditis, unspecified
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

This page was last updated on: 1/1/2018