ICD-10-CM 2027
ICD-10 code for coxsackie
From the official ICD-10-CM alphabetic index entry “Coxsackie (virus) (infection)”. Page updated September 29, 2026.
About coding coxsackie
The ICD-10-CM code for coxsackie is B34.1 (Enterovirus infection, unspecified). The official index lists 11 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on B34.1.
Within B34, choose B34.1 (Enterovirus infection, unspecified) only when documentation doesn't support a more specific option: adenovirus infection, unspecified (B34.0), coronavirus infection, unspecified (B34.2), Parvovirus infection, unspecified (B34.3), Papovavirus infection, unspecified (B34.4), other viral infections of unspecified site (B34.8) and viral infection, unspecified (B34.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 865 (Viral Illness with MCC, relative weight 1.3485) and DRG 866 (Viral Illness without MCC, relative weight 0.8692), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific coxsackie codes (official index)
- as cause of disease classified elsewhere B97.11 — Coxsackievirus as the cause of diseases classified elsewhere
- carditis B33.20 — Viral carditis, unspecified
- central nervous system NEC A88.8 — Other specified viral infections of central nervous system
- endocarditis B33.21 — Viral endocarditis
- enteritis A08.39 — Other viral enteritis
- meningitis (aseptic) A87.0 — Enteroviral meningitis
- myocarditis B33.22 — Viral myocarditis
- pericarditis B33.23 — Viral pericarditis
- pharyngitis B08.5 — Enteroviral vesicular pharyngitis
- pleurodynia B33.0 — Epidemic myalgia
- specific disease NEC B33.8 — Other specified viral diseases
Common questions about coxsackie ICD-10 codes
What is the ICD-10 code for coxsackie?
- B34.1 — Enterovirus infection, unspecified. More specific codes apply when the documentation supports them: B97.11, B33.20, A88.8, B33.21 and others below.
What is the ICD-10 code for carditis coxsackie?
- B33.20 — Viral carditis, unspecified.
What is the ICD-10 code for central nervous system nec coxsackie?
- A88.8 — Other specified viral infections of central nervous system.
What is the ICD-10 code for endocarditis coxsackie?
- B33.21 — Viral endocarditis.
What is the ICD-10 code for enteritis coxsackie?
- A08.39 — Other viral enteritis.
What is the ICD-10 code for meningitis coxsackie?
- A87.0 — Enteroviral meningitis.
What is the ICD-10 code for myocarditis coxsackie?
- B33.22 — Viral myocarditis.
Is B34.1 billable?
- Yes. B34.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B34.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B34.1 as a principal diagnosis.
Is B34.1 a CC or MCC?
- No. B34.1 is neither a CC nor an MCC under MS-DRG v44.0.