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 8 Other nerve root and plexus disorders
 * G54.9 Nerve root and plexus disorder, unspecified

G55 Nerve root and plexus compressions in diseases classified elsewhere

 * Code first underlying disease, such as:
 * neoplasm (C00-D48)
 * Excludes1: nerve root compression (due to) (in):
 * ankylosing spondylitis (M45.-)
 * dorsopathies (M53.-, M54.-)
 * intervertebral disc disorders (M50.1.-, M51.1.-)
 * spondylopathies (M46.-, M48.-)
 * spondylosis (M47.0-M47.2.-)

G56 Mononeuropathies of upper limb

 * Excludes1: current traumatic nerve disorder - see nerve injury by body region
 * G56.0 Carpal tunnel syndrome
 * G56.00 Carpal tunnel syndrome, unspecified side
 * G56.01 Carpal tunnel syndrome, right side
 * G56.02 Carpal tunnel syndrome, left side
 * G56.1 Other lesions of median nerve
 * G56.10 Other lesions of median nerve, unspecified side
 * G56.11 Other lesions of median nerve, right side
 * G56.12 Other lesions of median nerve, left side
 * G56.2 Lesion of ulnar nerve
 * Tardy ulnar nerve palsy
 * G56.20 Lesion of ulnar nerve, unspecified side
 * G56.21 Lesion of ulnar nerve, right side
 * G56.22 Lesion of ulnar nerve, left side
 * G56.3 Lesion of radial nerve
 * G56.30 Lesion of radial nerve, unspecified side
 * G56.31 Lesion of radial nerve, right side
 * G56.32 Lesion of radial nerve, left side
 * G56.4 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-)
 * G56.40 Causalgia of upper limb, unspecified side
 * G56.41 Causalgia of upper limb, right side
 * G56.42 Causalgia of upper limb, left side
 * G56.8 Other mononeuropathies of upper limb
 * Interdigital neuroma of upper limb
 * G56.80 Other mononeuropathies of upper limb, unspecified side
 * G56.