A88.0Enteroviral exanthematous fever [Boston exanthem]

A88.0 is the ICD-10-CM diagnosis code for enteroviral exanthematous fever [Boston exanthem]. It belongs to category A88 (other viral infections of central nervous system, not elsewhere classified), block A80-A89 (viral and prion infections of the central nervous system) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

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.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 048 (other enterovirus diseases of central nervous system).