G90.2 - Horner's syndrome

The ICD 10 Code for Horner's syndrome is listed as G90.2.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field	Value
Diagnosis Code:	G90.2
Description:	Horner's syndrome Bernard (-Horner) syndrome Cervical sympathetic dystrophy or paralysis
Diagnostic Related Groups (MS-DRG v30.0)	073 - Cranial & Peripheral Nerve Disorders W Mcc 074 - Cranial & Peripheral Nerve Disorders W/o Mcc

Chapter	Diseases of the nervous system (G00-G99)
Block	Other disorders of the nervous system (G89-G99)
Parent	G90 - Disorders of autonomic nervous system
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code:	337.9 - Unspecified disorder of autonomic nervous system (approximate)
ICD-10-CM Siblings (same level / similar specificity) of G90.2:
G90.0 - Idiopathic peripheral autonomic neuropathy
G90.1 - Familial dysautonomia [Riley-Day]
G90.3 - Multi-system degeneration of the autonomic nervous system
G90.4 - Autonomic dysreflexia
G90.5 - Complex regional pain syndrome I (CRPS I)
G90.8 - Other disorders of autonomic nervous system
G90.9 - Disorder of the autonomic nervous system, unspecified