G90.89 Other disorders of autonomic nervous system
✓ Billable
ICD-10-CM 2026
The ICD-10-CM code for Other disorders of autonomic nervous system is G90.89 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- G89-G99: Other disorders of the nervous system (G89-G99)
- Category G90
- 27 codes (21 billable)
- FY2026 Status
- Introduced in FY2025
Also Known As
ICD-10-CM Alphabetic Index entries that lead to G90.89:
- Sympatheticotonia
- Steinbrocker's syndrome
- Compression › sympathetic nerve NEC
- Imbalance › sympathetic
- Irritation › sympathetic nerve NEC
- Irritation › peripheral autonomic nervous system
- Imbalance › autonomic
- Irritable, irritability › sympathetic
Official Coding Guidelines
Dominant/nondominant side (TOC entry)a. Dominant/nondominant side ................................................................................................. 45
Pain - Category G89 (TOC entry)b. Pain - Category G89.............................................................................................................. 45
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026