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B26.2

Billable

Mumps encephalitis

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Inflammation of the brain and surrounding tissues (encephalitis) caused by the mumps virus, a serious neurological complication of mumps infection.

Coding Tips

  • •This is a serious complication requiring careful documentation of neurological symptoms and imaging findings
  • •Ensure the mumps diagnosis is also coded; encephalitis indicates systemic involvement beyond typical parotitis

Code Hierarchy

└B26Mumps└B26.2Mumps encephalitis
└B26.2Mumps encephalitis

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