G99..8 Other specified disorders of nervous system in diseases classified elsewhere

Billable

Excludes 1 (cannot be coded together)

  • nervous system involvement in:
  • cysticercosis (B69.0)
  • rubella (B06.0-)
  • syphilis (A52.1-)

Code First

  • underlying disorder, such as:
  • amyloidosis (E85.-)
  • avitaminosis (E56.-)

Last reviewed: September 2026