G56.4 - Causalgia of upper limb

The ICD 10 Code for Causalgia of upper limb is listed as G56.4.
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:	G56.4
Description:	Causalgia of upper limb Complex regional pain syndrome II of upper limb Excludes1: complex regional pain syndrome I of lower limb (G90.52-) complex regional pain syndrome I of upper limb (G90.51-) complex regional pain syndrome II of lower limb (G57.7-) reflex sympathetic dystrophy of lower limb (G90.52-) reflex sympathetic dystrophy of upper limb (G90.51-)

Chapter	Diseases of the nervous system (G00-G99)
Block	Nerve, nerve root and plexus disorders (G50-G59)
Parent	G56 - Mononeuropathies of upper limb
ICD-10-CM Children (deeper level / typically more specific) of G56.4:
G56.40 - Causalgia of unspecified upper limb
G56.41 - Causalgia of right upper limb
G56.42 - Causalgia of left upper limb
ICD-10-CM Siblings (same level / similar specificity) of G56.4:
G56.0 - Carpal tunnel syndrome
G56.1 - Other lesions of median nerve
G56.2 - Lesion of ulnar nerve
G56.3 - Lesion of radial nerve
G56.8 - Other specified mononeuropathies of upper limb
G56.9 - Unspecified mononeuropathy of upper limb