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ICD-10-CM Diagnosis Code G04.01

Effective Date: 10/01/2015 To 09/30/2025

Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)

CMS-HCC-V24 CMS-HCC-V28 RxHCC Age Gender Maternity Acute or Chronic MCC
-- -- -- -- -- -- Acute Yes
Excludes-1 for G04.01:
  • post chickenpox encephalitis (B01.1)

  • post measles encephalitis (B05.0)

  • post measles myelitis (B05.1)

Back-references to G04.01
  • Encephalitis(chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
  • Encephalomyelitis see also Encephalitis G04.90
    • acute disseminated G04.00
      • infectious G04.01
        • postinfectious G04.01
        • postinfectious NEC G04.01
        • Leukoencephalitis G04.81
          • postinfectious G04.01
          • Meningoencephalomyelitis see also Meningoencephalitis
            • acute NEC(viral) A86
              • disseminated G04.00
                • postinfectious G04.01
            • Chapter, Section and Diagnosis Prefix for G04.01
                G00-G99 :

                Diseases of the nervous system

                G00-G09 :

                Inflammatory diseases of the central nervous system

                G04 :

                Encephalitis, myelitis and encephalomyelitis