ICD-10-CM 2027
ICD-10 code for Boston exanthem
Enteroviral exanthematous fever [Boston exanthem]
From the official ICD-10-CM alphabetic index entry “Boston exanthem”. Page updated September 29, 2026.
About coding Boston exanthem
The ICD-10-CM code for Boston exanthem is A88.0 (Enteroviral exanthematous fever [Boston exanthem]).
Within A88 (other viral infections of central nervous system, not elsewhere classified), A88.0 is specifically for enteroviral exanthematous fever [Boston exanthem]. Related codes cover epidemic vertigo (A88.1) and other specified viral infections of central nervous system (A88.8).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 075 (Viral Meningitis with CC/MCC, relative weight 1.7707) and DRG 076 (Viral Meningitis without CC/MCC, relative weight 0.8675), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Boston exanthem ICD-10 codes
What is the ICD-10 code for Boston exanthem?
- A88.0 — Enteroviral exanthematous fever [Boston exanthem].
Is A88.0 billable?
- Yes. A88.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A88.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A88.0 as a principal diagnosis.
Is A88.0 a CC or MCC?
- A88.0 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.