ICD-10 code for congenital varicella

The ICD-10-CM code for congenital varicella is P35.8 (Other congenital viral diseases).

Within P35, choose P35.8 (Other congenital viral diseases) only when documentation doesn't support a more specific option: congenital rubella syndrome (P35.0), congenital cytomegalovirus infection (P35.1), congenital herpesviral [herpes simplex] infection (P35.2), congenital viral hepatitis (P35.3), congenital Zika virus disease (P35.4) and congenital viral disease, unspecified (P35.9).

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" 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 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.