G90.01 Carotid sinus syncope

Billable ICD-10-CM code, FY2026.

Applicable to

• Carotid sinus syndrome

Applies from G90 Disorders of autonomic nervous system

Excludes1 (never code together)

• dysfunction of the autonomic nervous system due to alcohol (G31.2)

MS-DRG index

Defines the logic of DRG(s) 073-074 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 337.01 Carotid sinus syndrome (approximate)

Code annotations containing back-references to G90.01

Back-references to G90.01

• Type 1 Excludes: R55 Syncope and collapse ("carotid sinus syncope (G90.01)")

Diagnosis Index entries for G90.01

• Carotid body or sinus syndrome
• Carotidynia
• Hypersensitive, hypersensitiveness, hypersensitivity › carotid sinus
• Sensitive, sensitivity › carotid sinus
• Syncope (near) (pre-) › carotid sinus
• Syndrome › carotid › body
• Syndrome › carotid › sinus

Nearby codes

• G90 Disorders of autonomic nervous system
• G90.0 Idiopathic peripheral autonomic neuropathy
• G90.01 Carotid sinus syncope (this code)
• G90.09 Other idiopathic peripheral autonomic neuropathy
• G90.1 Familial dysautonomia [Riley-Day]
• G90.2 Horner's syndrome
• G90.3 Multi-system degeneration of the autonomic nervous system
• G90.4 Autonomic dysreflexia