B01.1 – Varicella encephalitis, myelitis and encephalomyelitis
ICD-10-CM 2027 diagnosis code · Viral infections characterized by skin and mucous membrane lesions
ICD-10-CM code
B01.1
- Code
B01.1(claims format:B011)- Description
- Varicella encephalitis, myelitis and encephalomyelitis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- B00-B09 Viral infections characterized by skin and mucous membrane lesions
- Parent codes
- B01
Billable codes under B01.1
B01.1 is a header code and cannot be used on claims. Choose the most specific code:
Notes for B01.1
Applicable to:
- Postchickenpox encephalitis, myelitis and encephalomyelitis
Related codes in B01
Frequently asked questions
What is ICD-10 code B01.1?
B01.1 is the ICD-10-CM code for varicella encephalitis, myelitis and encephalomyelitis, in the block B00-B09 (Viral infections characterized by skin and mucous membrane lesions).
Is B01.1 a billable code?
No. B01.1 is a header code with more specific child codes; report one of the billable codes listed above.
What category does B01.1 belong to?
It belongs to category B01 – Varicella [chickenpox].
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.