1. G93 Other disorders of brain

    1. G93.0 Cerebral cysts

      Inclusion term(s):

      • Arachnoid cyst
      • Porencephalic cyst, acquired
    2. G93.1 Anoxic brain damage, not elsewhere classified

    3. G93.2 Benign intracranial hypertension

      Inclusion term(s):

      • Pseudotumor
    4. G93.3 Postviral and related fatigue syndromes

      1. G93.31 Postviral fatigue syndrome

      2. G93.32 Myalgic encephalomyelitis/chronic fatigue syndrome

        Inclusion term(s):

        • Chronic fatigue syndrome
        • ME/CFS
        • Myalgic encephalomyelitis
      3. G93.39 Other post infection and related fatigue syndromes

    5. G93.4 Other and unspecified encephalopathy

      1. G93.40 Encephalopathy, unspecified

      2. G93.41 Metabolic encephalopathy

        Inclusion term(s):

        • Septic encephalopathy
      3. G93.42 Megaloencephalic leukoencephalopathy with subcortical cysts

      4. G93.43 Leukoencephalopathy with calcifications and cysts

      5. G93.44 Adult-onset leukodystrophy with axonal spheroids

        Inclusion term(s):

        • Adult-onset leukoencephalopathy with axonal spheroids and pigmented glia
      6. G93.49 Other encephalopathy

        Inclusion term(s):

        • Encephalopathy NEC
    6. G93.5 Compression of brain

      Inclusion term(s):

      • Arnold-Chiari type 1 compression of brain
      • Compression of brain (stem)
      • Herniation of brain (stem)
    7. G93.6 Cerebral edema

    8. G93.7 Reye's syndrome

    9. G93.8 Other specified disorders of brain

      1. G93.81 Temporal sclerosis

        Inclusion term(s):

        • Hippocampal sclerosis
        • Mesial temporal sclerosis
      2. G93.82 Brain death

      3. G93.89 Other specified disorders of brain

        Inclusion term(s):

        • Postradiation encephalopathy
    10. G93.9 Disorder of brain, unspecified

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.