B01.11 ICD-10-CM Code: Varicella encephalitis and encephalomyelitis
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
B01.11Varicella encephalitis and encephalomyelitis
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where B01.11 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Viral infections characterized by skin and mucous membrane lesions (B00-B09)
- 3
Category B01
Varicella [chickenpox]
- 4
Subcategory B01.1
Varicella encephalitis, myelitis and encephalomyelitis
- 5
Code B01.11
Varicella encephalitis and encephalomyelitis
Documentation details
Notes for this code
Inclusion terms
- Postchickenpox encephalitis and encephalomyelitis
Code first
No “code first” instruction is listed for B01.11.
Use additional code
No “use additional code” instruction is listed for B01.11.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for B01.11.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for B01.11.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code B01.11 mean?
B01.11 is the FY 2027 U.S. ICD-10-CM code for “Varicella encephalitis and encephalomyelitis.”
Is B01.11 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, B01.11 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is B01.11 located in ICD-10-CM?
B01.11 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Viral infections characterized by skin and mucous membrane lesions (B00-B09) (B00–B09), under category B01, Varicella [chickenpox] and subcategory B01.1, Varicella encephalitis, myelitis and encephalomyelitis.
What coding notes are listed for B01.11?
Its listed inclusion terms are Postchickenpox encephalitis and encephalomyelitis. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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