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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Semin Pediatr Neurol. 2012 Dec;19(4):219–223. doi: 10.1016/j.spen.2012.10.001

Table 1.

ICD-9 codes used to identify CNMC cases in the PPM and PHIS databases

Heritable White Matter Disorders Acquired White Matter Disorders
ICD-9 Code Description ICD-9 Code Description
330.00 Leukodystrophy 341.20 Acute ‘transverse’ myelitis
330.10 Cerebral lipidoses 341.21 Acute ‘transverse’ myelitis in conditions classified elsewhere
330.20 Cerebral degeneration in generalized lipidoses 341.22 Idiopathic transverse myelitis
330.30 Cerebral degeneration of childhood in other diseases classified elsewhere 323.82 Other cases of myelitis
330.80 Other specified cerebral degenerations in childhood 340.00 Multiple sclerosis
330.90 Unspecified cerebral degeneration in childhood 341.00 Neuromyelitis optica
349.89 Other specified disorders of nervous system 377.30 Optic neuritis
323.90 Unspecified cause of encephalitis, myelitis, and encephalomyelitis) 377.32 Retro bulbar neuritis ‘acute’
341.90 Demyelinating disease of central nervous system, unspecified 323.61 Infectious acute disseminated encephalomyelitis ‘ADEM’
323.63 Post infectious myelitis
323.81 Other causes of encephalitis and encephalomyelitis