Specific code icon 2017 ICD-10-CM Diagnosis Code G31.9

Degenerative disease of nervous system, unspecified

    2016 2017 Billable/Specific Code

  • G31.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • This is the American ICD-10-CM version of G31.9. Other international versions of ICD-10 G31.9 may differ.
  • Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Information
  • A disorder of the central nervous system characterized by gradual and progressive loss of neural tissue and neurologic function.
  • Hereditary and sporadic conditions which are characterized by progressive nervous system dysfunction. These disorders are often associated with atrophy of the affected central or peripheral nervous system structures.
  • Neurologic disorders characterized by progressive nervous system dysfunction and loss of neural tissue.
Approximate Synonyms
  • Acquired cerebral atrophy
  • Cerebellar paraneoplastic degeneration
  • Cerebral atrophy, acquired
  • Cerebral degeneration in childhood
  • Degenerative brain disorder
  • Paraneoplastic cerebellar degeneration
ICD-10-CM G31.9 is grouped within Diagnostic Related Group(s) (MS-DRG v34.0):
  • 056 Degenerative nervous system disorders with mcc
  • 057 Degenerative nervous system disorders without mcc

Convert ICD-10-CM G31.9 to ICD-9-CM

The following ICD-10-CM Index entries contain back-references to ICD-10-CM G31.9: