ICD-10-CM G99.8: Other specified disorders of nervous system in diseases classified elsewhere

ICD-10-CM Diagnosis Code (2025)

Official Description for G99.8

Other specified disorders of nervous system in diseases classified elsewhere

Coding Notes & Guidelines for G99.8

Excludes1: Not Coded Here
  • nervous system involvement in:
  • cysticercosis (B69.0)
  • rubella (B06.0-)
  • syphilis (A52.1-)
Code First
  • underlying disorder, such as:
  • amyloidosis (E85.-)
  • avitaminosis (E56.-)

Parent Code (Less Specific):

About ICD-10-CM Code G99.8 (Other specified disorders of nervous system in diseases classified elsewhere)

ICD-10-CM code G99.8 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM G99.8 became effective on October 1, 2024.

This page provides detailed information about G99.8 - Other specified disorders of nervous system in diseases classified elsewhere. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Other specified disorders of nervous system in diseases classified elsewhere.