Is G90 a billable code?
No. G90 is a header code that groups 21 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
G90: Disorders of autonomic nervous system
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
G90 groups related diagnoses under disorders of autonomic nervous system. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under G90
- G90.01Carotid sinus syncope
- G90.09Other idiopathic peripheral autonomic neuropathy
- G90.1Familial dysautonomia [Riley-Day]
- G90.2Horner's syndrome
- G90.3Multi-system degeneration of the autonomic nervous system
- G90.4Autonomic dysreflexia
- G90.50Complex regional pain syndrome I, unspecified
- G90.511Complex regional pain syndrome I of right upper limb
- G90.512Complex regional pain syndrome I of left upper limb
- G90.513Complex regional pain syndrome I of upper limb, bilateral
- G90.519Complex regional pain syndrome I of unspecified upper limb
- G90.521Complex regional pain syndrome I of right lower limb
- G90.522Complex regional pain syndrome I of left lower limb
- G90.523Complex regional pain syndrome I of lower limb, bilateral
- G90.529Complex regional pain syndrome I of unspecified lower limb
- G90.59Complex regional pain syndrome I of other specified site
- G90.81Serotonin syndrome
- G90.89Other disorders of autonomic nervous system
- G90.9Disorder of the autonomic nervous system, unspecified
- G90.APostural orthostatic tachycardia syndrome [POTS]
- G90.BLMNB1-related autosomal dominant leukodystrophy
G90 questions
What does G90 mean?
G90 is the ICD-10-CM code for Disorders of autonomic nervous system. It is in chapter 6, Diseases of the nervous system (G00-G99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.