G98.8 – Other disorders of nervous system
ICD-10-CM 2027 diagnosis code · Other disorders of the nervous system
ICD-10-CM code
G98.8
- Code
G98.8(claims format:G988)- Description
- Other disorders of nervous system
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 6. Diseases of the nervous system (G00-G99)
- Block
- G89-G99 Other disorders of the nervous system
- Parent codes
- G98
Notes for G98.8
Applicable to:
- Nervous system disorder NOS
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
G98 – Other disorders of nervous system not elsewhere classified
Includes:
- nervous system disorder NOS
Index terms for G98.8
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in G98
Frequently asked questions
What is ICD-10 code G98.8?
G98.8 is the ICD-10-CM code for other disorders of nervous system, in the block G89-G99 (Other disorders of the nervous system).
Is G98.8 a billable code?
Yes. G98.8 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does G98.8 belong to?
It belongs to category G98 – Other disorders of nervous system not elsewhere classified.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.