ICD-10-CM > A00-B99 > B00-B09 > B01 B01 Varicella [chickenpox] Non-Billable/Non-Specific Codes B01.0Varicella meningitisB01.1Varicella encephalitis, myelitis and encephalomyelitisB01.11Varicella encephalitis and encephalomyelitisB01.12Varicella myelitisB01.2Varicella pneumoniaB01.8Varicella with other complicationsB01.81Varicella keratitisB01.89Other varicella complicationsB01.9Varicella without complication