B26.2 Mumps encephalitis

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from B26 Mumps

Includes

• epidemic parotitis
• infectious parotitis

MS-DRG index

Defines the logic of DRG(s) 023-024 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 072.2 Mumps encephalitis

Code annotations containing back-references to B26.2

Back-references to B26.2

• Type 1 Excludes: A85 Other viral encephalitis, not elsewhere classified ("encephalitis due to mumps virus (B26.2)")
• Type 1 Excludes: G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere ("mumps encephalitis, myelitis and encephalomyelitis (B26.2)")

Back-references to B26

• Code First: H67 Otitis media in diseases classified elsewhere ("viral disease NEC (B00-B34)")
• Type 1 Excludes: K11.2 Sialoadenitis ("epidemic parotitis (B26.-)")
• Type 1 Excludes: K11.2 Sialoadenitis ("mumps (B26.-)")

Diagnosis Index entries for B26.2

• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) › in (due to) › mumps
• Meningoencephalitis › in (due to) › mumps
• Meningoencephalitis › mumps
• Mumps › encephalitis
• Mumps › meningoencephalitis

Nearby codes

• B26 Mumps
• B26.0 Mumps orchitis
• B26.1 Mumps meningitis
• B26.2 Mumps encephalitis (this code)
• B26.3 Mumps pancreatitis
• B26.8 Mumps with other complications
• B26.81 Mumps hepatitis
• B26.82 Mumps myocarditis
• B26.83 Mumps nephritis