ICD-10-CM · Chapter 1 · A00-B99
B01 Varicella [chickenpox]
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| B01..0 | Varicella meningitis | Yes |
| B01..1 | Varicella encephalitis, myelitis and encephalomyelitis | No |
| B01..11 | Varicella encephalitis and encephalomyelitis | Yes |
| B01..12 | Varicella myelitis | Yes |
| B01..2 | Varicella pneumonia | Yes |
| B01..8 | Varicella with other complications | No |
| B01..81 | Varicella keratitis | Yes |
| B01..89 | Other varicella complications | Yes |
| B01..9 | Varicella without complication | Yes |
Plain-language term for this code
The following entry in the US Medical Glossary corresponds to ICD-10-CM category B01:
- Chickenpox (Varicella) — Varicela
Last reviewed: September 2026