1. Q07 Other congenital malformations of nervous system

    Excludes2

    • congenital central alveolar hypoventilation syndrome (G47.35)
    • familial dysautonomia [Riley-Day] (G90.1)
    • neurofibromatosis (nonmalignant) (Q85.0-)
    1. Q07.0 Arnold-Chiari syndrome

      Inclusion term(s):

      • Arnold-Chiari syndrome, type II
      1. Q07.00 Arnold-Chiari syndrome without spina bifida or hydrocephalus

      2. Q07.01 Arnold-Chiari syndrome with spina bifida

      3. Q07.02 Arnold-Chiari syndrome with hydrocephalus

      4. Q07.03 Arnold-Chiari syndrome with spina bifida and hydrocephalus

    2. Q07.8 Other specified congenital malformations of nervous system

      Inclusion term(s):

      • Agenesis of nerve
      • Displacement of brachial plexus
      • Jaw-winking syndrome
      • Marcus Gunn's syndrome
    3. Q07.9 Congenital malformation of nervous system, unspecified

      Inclusion term(s):

      • Congenital anomaly NOS of nervous system
      • Congenital deformity NOS of nervous system
      • Congenital disease or lesion NOS of nervous system
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.