B01.1 Varicella encephalitis, myelitis and encephalomyelitis

Non-billable header with 2 child codes.

Applicable to

• Postchickenpox encephalitis, myelitis and encephalomyelitis

Codes under B01.1

• B01.11 Varicella encephalitis and encephalomyelitis
• B01.12 Varicella myelitis

Code annotations containing back-references to B01.1

Back-references to B01.1

• Type 1 Excludes: G04.01 Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM) ("post chickenpox encephalitis (B01.1)")
• Type 1 Excludes: G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere ("postchickenpox encephalitis, myelitis and encephalomyelitis (B01.1-)")

Back-references to B01

• Type 2 Excludes: B10 Other human herpesviruses ("human herpesvirus 3 (B01.-, B02.-)")
• Type 2 Excludes: B10 Other human herpesviruses ("varicella (B01.-)")
• Code First: H67 Otitis media in diseases classified elsewhere ("viral disease NEC (B00-B34)")

Nearby codes

• B01 Varicella [chickenpox]
• B01.0 Varicella meningitis
• B01.1 Varicella encephalitis, myelitis and encephalomyelitis (this code)
• B01.11 Varicella encephalitis and encephalomyelitis
• B01.12 Varicella myelitis
• B01.2 Varicella pneumonia
• B01.8 Varicella with other complications
• B01.81 Varicella keratitis