G00–G99
Diseases of the Nervous System
Parkinson's, epilepsy, migraine, neuropathy
G50.9
Disorder of trigeminal nerve, unspecified
Billable
G51
Facial nerve disorders
Non-billable
G51.0
Bell's palsy
Billable
G51.1
Geniculate ganglionitis
Billable
G51.2
Melkersson's syndrome
Billable
G51.3
Clonic hemifacial spasm
Non-billable
G51.31
Clonic hemifacial spasm, right
Billable
G51.32
Clonic hemifacial spasm, left
Billable
G51.33
Clonic hemifacial spasm, bilateral
Billable
G51.39
Clonic hemifacial spasm, unspecified
Billable
G51.4
Facial myokymia
Billable
G51.8
Other disorders of facial nerve
Billable
G51.9
Disorder of facial nerve, unspecified
Billable
G52
Disorders of other cranial nerves
Non-billable
G52.0
Disorders of olfactory nerve
Billable
G52.1
Disorders of glossopharyngeal nerve
Billable
G52.2
Disorders of vagus nerve
Billable
G52.3
Disorders of hypoglossal nerve
Billable
G52.7
Disorders of multiple cranial nerves
Billable
G52.8
Disorders of other specified cranial nerves
Billable
G52.9
Cranial nerve disorder, unspecified
Billable
G53
Cranial nerve disorders in diseases classified elsewhere
Billable
G54
Nerve root and plexus disorders
Non-billable
G54.0
Brachial plexus disorders
Billable
G54.1
Lumbosacral plexus disorders
Billable
G54.2
Cervical root disorders, not elsewhere classified
Billable
G54.3
Thoracic root disorders, not elsewhere classified
Billable
G54.4
Lumbosacral root disorders, not elsewhere classified
Billable
G54.5
Neuralgic amyotrophy
Billable
G54.6
Phantom limb syndrome with pain
Billable
G54.7
Phantom limb syndrome without pain
Billable
G54.8
Other nerve root and plexus disorders
Billable
G54.9
Nerve root and plexus disorder, unspecified
Billable
G55
Nerve root and plexus compressions in diseases classified elsewhere
Billable
G56
Mononeuropathies of upper limb
Non-billable
G56.0
Carpal tunnel syndrome
Non-billable
G56.00
Carpal tunnel syndrome, unspecified upper limb
Billable
G56.01
Carpal tunnel syndrome, right upper limb
Billable
G56.02
Carpal tunnel syndrome, left upper limb
Billable
G56.03
Carpal tunnel syndrome, bilateral upper limbs
Billable
G56.1
Other lesions of median nerve
Non-billable
G56.10
Other lesions of median nerve, unspecified upper limb
Billable
G56.11
Other lesions of median nerve, right upper limb
Billable
G56.12
Other lesions of median nerve, left upper limb
Billable
G56.13
Other lesions of median nerve, bilateral upper limbs
Billable
G56.2
Lesion of ulnar nerve
Non-billable
G56.20
Lesion of ulnar nerve, unspecified upper limb
Billable
G56.21
Lesion of ulnar nerve, right upper limb
Billable
G56.22
Lesion of ulnar nerve, left upper limb
Billable
G56.23
Lesion of ulnar nerve, bilateral upper limbs
Billable
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