G90.8 – Other disorders of autonomic nervous system
ICD-10-CM 2027 diagnosis code · Other disorders of the nervous system
ICD-10-CM code
G90.8
- Code
G90.8(claims format:G908)- Description
- Other disorders of autonomic nervous system
- Billable
- No – use a more specific code below
- 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
- G90
Billable codes under G90.8
G90.8 is a header code and cannot be used on claims. Choose the most specific code:
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
G90 – Disorders of autonomic nervous system
Excludes1 (not coded here):
- dysfunction of the autonomic nervous system due to alcohol (G31.2)
Related codes in G90
- G90.0 – Idiopathic peripheral autonomic neuropathyHeader
- G90.1 – Familial dysautonomia [Riley-Day]Billable
- G90.2 – Horner's syndromeBillable
- G90.3 – Multi-system degeneration of the autonomic nervous systemBillable
- G90.4 – Autonomic dysreflexiaBillable
- G90.5 – Complex regional pain syndrome I (CRPS I)Header
- G90.9 – Disorder of the autonomic nervous system, unspecifiedBillable
- G90.A – Postural orthostatic tachycardia syndrome [POTS]Billable
- G90.B – LMNB1-related autosomal dominant leukodystrophyBillable
Frequently asked questions
What is ICD-10 code G90.8?
G90.8 is the ICD-10-CM code for other disorders of autonomic nervous system, in the block G89-G99 (Other disorders of the nervous system).
Is G90.8 a billable code?
No. G90.8 is a header code with more specific child codes; report one of the billable codes listed above.
What category does G90.8 belong to?
It belongs to category G90 – Disorders of autonomic nervous system.
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.