Chapter VI

Diseases of the nervous system
(G00-G99)

Nerve, nerve root and plexus disorders
(G50-G59)

Excludes: current traumatic nerve, nerve root and plexus disorders - see nerve injury by body region
neuralgia
neuritis
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NOS ( M79.2 )
peripheral neuritis in pregnancy ( O26.8 )
radiculitis NOS ( M54.1 )

G50 Disorders of trigeminal nerve
Includes: disorders of 5th cranial nerve
G50.0 Trigeminal neuralgia
Syndrome of paroxysmal facial pain
Tic douloureux
G50.1 Atypical facial pain
G50.8 Other disorders of trigeminal nerve
G50.9 Disorder of trigeminal nerve, unspecified

G51 Facial nerve disorders
Includes: disorders of 7th cranial nerve
G51.0 Bell's palsy
Facial palsy
G51.1 Geniculate ganglionitis
Excludes: postherpetic geniculate ganglionitis ( B02.2 )
G51.2 Melkersson's syndrome
Melkersson-Rosenthal syndrome
G51.3 Clonic hemifacial spasm
G51.4 Facial myokymia
G51.8 Other disorders of facial nerve
G51.9 Disorder of facial nerve, unspecified

G52 Disorders of other cranial nerves
Excludes: disorders of:
· acoustic [8th] nerve ( H93.3 )
· optic [2nd] nerve ( H46 , H47.0 )
paralytic strabismus due to nerve palsy ( H49.0-H49.2 )
G52.0 Disorders of olfactory nerve
Disorder of 1st cranial nerve
G52.1 Disorders of glossopharyngeal nerve
Disorder of 9th cranial nerve
Glossopharyngeal neuralgia
G52.2 Disorders of vagus nerve
Disorder of pneumogastric [10th] nerve
G52.3 Disorders of hypoglossal nerve
Disorder of 12th cranial nerve
G52.7 Disorders of multiple cranial nerves
Polyneuritis cranialis
G52.8 Disorders of other specified cranial nerves
G52.9 Cranial nerve disorder, unspecified

G53* Cranial nerve disorders in diseases classified elsewhere
G53.0* Postzoster neuralgia ( B02.2+ )
Postherpetic:
· geniculate ganglionitis
· trigeminal neuralgia
G53.1* Multiple cranial nerve palsies in infectious and parasitic diseases classified elsewhere ( A00-B99+ )
G53.2* Multiple cranial nerve palsies in sarcoidosis ( D86.8+ )
G53.3* Multiple cranial nerve palsies in neoplastic disease ( C00-D48+ )
G53.8* Other cranial nerve disorders in other diseases classified elsewhere

G54 Nerve root and plexus disorders
Excludes: current traumatic nerve root and plexus disorders - see nerve injury by body region
intervertebral disc disorders ( M50-M51 )
neuralgia or neuritis NOS ( M79.2 )
neuritis or radiculitis:
· brachial NOS
· lumbar NOS
· lumbosacral NOS
· thoracic NOS
radiculitis NOS
radiculopathy NOS
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( M54.1 )
spondylosis ( M47.- )
G54.0 Brachial plexus disorders
Thoracic outlet syndrome
G54.1 Lumbosacral plexus disorders
G54.2 Cervical root disorders, not elsewhere classified
G54.3 Thoracic root disorders, not elsewhere classified
G54.4 Lumbosacral root disorders, not elsewhere classified
G54.5 Neuralgic amyotrophy
Parsonage-Aldren-Turner syndrome
Shoulder-girdle neuritis
G54.6 Phantom limb syndrome with pain
G54.7 Phantom limb syndrome without pain
Phantom limb syndrome NOS
G54.8 Other nerve root and plexus disorders
G54.9 Nerve root and plexus disorder, unspecified

G55* Nerve root and plexus compressions in diseases classified elsewhere
G55.0* Nerve root and plexus compressions in neoplastic disease ( C00-D48+ )
G55.1* Nerve root and plexus compressions in intervertebral disc disorders ( M50-M51+ )
G55.2* Nerve root and plexus compressions in spondylosis ( M47.-+ )
G55.3* Nerve root and plexus compressions in other dorsopathies ( M45-M46+ , M48.-+ , M53-M54+ )
G55.8* Nerve root and plexus compressions in other diseases classified elsewhere

G56 Mononeuropathies of upper limb
Excludes: current traumatic nerve disorder - see nerve injury by body region
G56.0 Carpal tunnel syndrome
G56.1 Other lesions of median nerve
G56.2 Lesion of ulnar nerve
Tardy ulnar nerve palsy
G56.3 Lesion of radial nerve
G56.4 Causalgia
G56.8 Other mononeuropathies of upper limb
Interdigital neuroma of upper limb
G56.9 Mononeuropathy of upper limb, unspecified

G57 Mononeuropathies of lower limb
Excludes: current traumatic nerve disorder - see nerve injury by body region
G57.0 Lesion of sciatic nerve
Excludes: sciatica:
· NOS ( M54.3 )
· attributed to intervertebral disc disorder ( M51.1 )
G57.1 Meralgia paraesthetica
Lateral cutaneous nerve of thigh syndrome
G57.2 Lesion of femoral nerve
G57.3 Lesion of lateral popliteal nerve
Peroneal nerve palsy
G57.4 Lesion of medial popliteal nerve
G57.5 Tarsal tunnel syndrome
G57.6 Lesion of plantar nerve
Morton's metatarsalgia
G57.8 Other mononeuropathies of lower limb
Interdigital neuroma of lower limb
G57.9 Mononeuropathy of lower limb, unspecified

G58 Other mononeuropathies
G58.0 Intercostal neuropathy
G58.7 Mononeuritis multiplex
G58.8 Other specified mononeuropathies
G58.9 Mononeuropathy, unspecified

G59* Mononeuropathy in diseases classified elsewhere
G59.0* Diabetic mononeuropathy (E10-E14+ with common fourth character .4)
G59.8* Other mononeuropathies in diseases classified elsewhere


Processed on 29.10.2004 M.S. Source: World Health Organization © Copyright WHO/DIMDI 1994/2005