1. G12 Spinal muscular atrophy and related syndromes

    1. G12.0 Infantile spinal muscular atrophy, type I [Werdnig-Hoffman]

    2. G12.1 Other inherited spinal muscular atrophy

      Inclusion term(s):

      • Adult form spinal muscular atrophy
      • Childhood form, type II spinal muscular atrophy
      • Distal spinal muscular atrophy
      • Juvenile form, type III spinal muscular atrophy [Kugelberg-Welander]
      • Progressive bulbar palsy of childhood [Fazio-Londe]
      • Scapuloperoneal form spinal muscular atrophy
    3. G12.2 Motor neuron disease

      1. G12.20 Motor neuron disease, unspecified

      2. G12.21 Amyotrophic lateral sclerosis

      3. G12.22 Progressive bulbar palsy

      4. G12.23 Primary lateral sclerosis

      5. G12.24 Familial motor neuron disease

      6. G12.25 Progressive spinal muscle atrophy

      7. G12.29 Other motor neuron disease

    4. G12.8 Other spinal muscular atrophies and related syndromes

    5. G12.9 Spinal muscular atrophy, 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.