Is B01.1 a billable code?
No. B01.1 is a header code that groups 2 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
B01.1: Varicella encephalitis, myelitis and encephalomyelitis
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
B01.1 groups related diagnoses under varicella encephalitis, myelitis and encephalomyelitis. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under B01.1
Other codes in B01 Varicella [chickenpox]
B01.1 questions
What does B01.1 mean?
B01.1 is the ICD-10-CM code for Varicella encephalitis, myelitis and encephalomyelitis. It is in chapter 1, Certain infectious and parasitic diseases (A00-B99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.