ICD-10-CM · Chapter 1 · A00–B99
B01.1
Varicella encephalitis, myelitis and encephalomyelitis
Certain infectious and parasitic diseases
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- B01.1
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 1 — Certain infectious and parasitic diseases
- Category
- B01 — Varicella [chickenpox]
- Specificity
- 4 characters
How coders use this code
ICD-10-CM B01.1 is a category (header) for varicella encephalitis, myelitis and encephalomyelitis. It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in B01
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