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2. ICD-10 Codes
3. Chapter - G00-G99
4. Section - G89-G99
5. Category - G99
6. G99.8

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

• Applicable to Other specified disorders of nervous system in diseases classified elsewhere
• The 2025 edition of ICD10-CM G99.8 became effective on October 1, 2024.
• This is the American ICD10-CM version of G99.8 - other international versions of ICD10 G99.8 may differ.
• G99.8 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Type 1 Excludes

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

codefirst

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

The following codes above G99.8 contain annotation back-references that may be applicable to G99.8:

• Chapter: G00-G99 - Diseases of the nervous system
• Section: G89-G99 - Other disorders of the nervous system
• Category: G99 - Other disorders of nervous system in diseases classified elsewhere

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.