ICD-10-CM
ICD-10 code for Chickenpox: B01.9
The closest CDC title for "Chickenpox" is B01.9, Varicella without complication. B01.9 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under B01, then other CDC titles that name varicella without complication
A header groups codes and is not billed. A billable code is one you can report.
- B01Varicella [chickenpox]Header
- B01.0Varicella meningitisBillable
- B01.1Varicella encephalitis, myelitis and encephalomyelitisHeader
- B01.11Varicella encephalitis and encephalomyelitisBillable
- B01.12Varicella myelitisBillable
- B01.2Varicella pneumoniaBillable
- B01.8Varicella with other complicationsHeader
- B01.81Varicella keratitisBillable
- B01.89Other varicella complicationsBillable
- B01.9Varicella without complicationBillable
Related conditions
Related pages
- B01.9 code detailsNotes, nearby codes, CMS-HCC group
- Category B01Every code under it
- Chapter 1Certain infectious and parasitic diseases
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Chickenpox?
The closest CDC title for "Chickenpox" is B01.9, Varicella without complication. B01.9 is a billable code.
Is B01.9 billable?
Yes. B01.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is B01.9 in?
Chapter 1. Certain infectious and parasitic diseases.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.