1. Q01 Encephalocele

    Includes:

    • Arnold-Chiari syndrome, type III
    • encephalocystocele
    • encephalomyelocele
    • hydroencephalocele
    • hydromeningocele, cranial
    • meningocele, cerebral
    • meningoencephalocele

    Excludes1

    • Meckel-Gruber syndrome (Q61.9)
    1. Q01.0 Frontal encephalocele

    2. Q01.1 Nasofrontal encephalocele

    3. Q01.2 Occipital encephalocele

    4. Q01.8 Encephalocele of other sites

    5. Q01.9 Encephalocele, 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.