Nerve, nerve root and plexus disorders (G50-G59)
ICD-10 codes G50-G59 cover disorders affecting nerve structures including the trigeminal nerve, facial nerve, other cranial nerves, nerve roots, plexuses, and mononeuropathies of limbs. These codes specify various nerve-related conditions from facial paralysis to nerve compression syndromes in upper and lower limbs.
This range includes conditions like G50.0 for trigeminal neuralgia, also known as fifth cranial nerve disorders, where severe facial pain occurs. Facial nerve issues such as G51.0 for Bell's palsy are included with synonyms like acute facial paralysis. Disorders of other cranial nerves (G52) like glossopharyngeal neuralgia and vagus nerve dysfunction are also coded here. Plexus disorders appear in codes like G54.0 for brachial plexus disorders, covering syndromes such as thoracic outlet syndrome. Mononeuropathies affecting individual nerves in limbs are detailed in codes G56 and G57, including conditions like G56.0 for carpal tunnel syndrome and G57.0 for sciatic nerve lesions. Codes also address complex pain syndromes such as causalgia (G56.4, G57.7). Unspecified and other specified nerve disorders are available to capture less clearly defined cases, assisting in accurate medical coding for nerve-related diagnoses.
- Disorders of trigeminal nerve (G50)
- Facial nerve disorders (G51)
- Disorders of other cranial nerves (G52)
- Cranial nerve disorders in diseases classified elsewhere (G5
- Nerve root and plexus disorders (G54)
- Nerve root and plexus compressions in diseases classified el
- Mononeuropathies of upper limb (G56)
- Mononeuropathies of lower limb (G57)
- Other mononeuropathies (G58)
- Mononeuropathy in diseases classified elsewhere (G59)
Diseases of the nervous system (G00–G99)
Nerve, nerve root and plexus disorders (G50-G59)
G51 Facial nerve disorders
- G51.0 Bell's palsy
- G51.1 Geniculate ganglionitis
- G51.2 Melkersson's syndrome
G51.3 Clonic hemifacial spasm
- G51.31 Clonic hemifacial spasm, right
- G51.32 Clonic hemifacial spasm, left
- G51.33 Clonic hemifacial spasm, bilateral
- G51.39 Clonic hemifacial spasm, unspecified
- G51.4 Facial myokymia
- G51.8 Other disorders of facial nerve
- G51.9 Disorder of facial nerve, unspecified
Facial nerve disorders (G51)
G52 Disorders of other cranial nerves
- G52.0 Disorders of olfactory nerve
- G52.1 Disorders of glossopharyngeal nerve
- G52.2 Disorders of vagus nerve
- G52.3 Disorders of hypoglossal nerve
- G52.7 Disorders of multiple cranial nerves
- G52.8 Disorders of other specified cranial nerves
- G52.9 Cranial nerve disorder, unspecified
Disorders of other cranial nerves (G52)
- G53 Cranial nerve disorders in diseases classified elsewhere
Cranial nerve disorders in diseases classified elsewhere (G53)
G54 Nerve root and plexus disorders
- G54.0 Brachial plexus disorders
- 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
- G54.6 Phantom limb syndrome with pain
- G54.7 Phantom limb syndrome without pain
- G54.8 Other nerve root and plexus disorders
- G54.9 Nerve root and plexus disorder, unspecified
Nerve root and plexus disorders (G54)
- G55 Nerve root and plexus compressions in diseases classified elsewhere
Nerve root and plexus compressions in diseases classified elsewhere (G55)
G56 Mononeuropathies of upper limb
G56.0 Carpal tunnel syndrome
- G56.00 Carpal tunnel syndrome, unspecified upper limb
- G56.01 Carpal tunnel syndrome, right upper limb
- G56.02 Carpal tunnel syndrome, left upper limb
- G56.03 Carpal tunnel syndrome, bilateral upper limbs
G56.1 Other lesions of median nerve
- G56.10 Other lesions of median nerve, unspecified upper limb
- G56.11 Other lesions of median nerve, right upper limb
- G56.12 Other lesions of median nerve, left upper limb
- G56.13 Other lesions of median nerve, bilateral upper limbs
G56.2 Lesion of ulnar nerve
- G56.20 Lesion of ulnar nerve, unspecified upper limb
- G56.21 Lesion of ulnar nerve, right upper limb
- G56.22 Lesion of ulnar nerve, left upper limb
- G56.23 Lesion of ulnar nerve, bilateral upper limbs
G56.3 Lesion of radial nerve
- G56.30 Lesion of radial nerve, unspecified upper limb
- G56.31 Lesion of radial nerve, right upper limb
- G56.32 Lesion of radial nerve, left upper limb
- G56.33 Lesion of radial nerve, bilateral upper limbs
G56.4 Causalgia of upper limb
- G56.40 Causalgia of unspecified upper limb
- G56.41 Causalgia of right upper limb
- G56.42 Causalgia of left upper limb
- G56.43 Causalgia of bilateral upper limbs
G56.8 Other specified mononeuropathies of upper limb
- G56.80 Other specified mononeuropathies of unspecified upper limb
- G56.81 Other specified mononeuropathies of right upper limb
- G56.82 Other specified mononeuropathies of left upper limb
- G56.83 Other specified mononeuropathies of bilateral upper limbs
G56.9 Unspecified mononeuropathy of upper limb
- G56.90 Unspecified mononeuropathy of unspecified upper limb
- G56.91 Unspecified mononeuropathy of right upper limb
- G56.92 Unspecified mononeuropathy of left upper limb
- G56.93 Unspecified mononeuropathy of bilateral upper limbs
Mononeuropathies of upper limb (G56)
G57 Mononeuropathies of lower limb
G57.0 Lesion of sciatic nerve
- G57.00 Lesion of sciatic nerve, unspecified lower limb
- G57.01 Lesion of sciatic nerve, right lower limb
- G57.02 Lesion of sciatic nerve, left lower limb
- G57.03 Lesion of sciatic nerve, bilateral lower limbs
G57.1 Meralgia paresthetica
- G57.10 Meralgia paresthetica, unspecified lower limb
- G57.11 Meralgia paresthetica, right lower limb
- G57.12 Meralgia paresthetica, left lower limb
- G57.13 Meralgia paresthetica, bilateral lower limbs
G57.2 Lesion of femoral nerve
- G57.20 Lesion of femoral nerve, unspecified lower limb
- G57.21 Lesion of femoral nerve, right lower limb
- G57.22 Lesion of femoral nerve, left lower limb
- G57.23 Lesion of femoral nerve, bilateral lower limbs
G57.3 Lesion of lateral popliteal nerve
- G57.30 Lesion of lateral popliteal nerve, unspecified lower limb
- G57.31 Lesion of lateral popliteal nerve, right lower limb
- G57.32 Lesion of lateral popliteal nerve, left lower limb
- G57.33 Lesion of lateral popliteal nerve, bilateral lower limbs
G57.4 Lesion of medial popliteal nerve
- G57.40 Lesion of medial popliteal nerve, unspecified lower limb
- G57.41 Lesion of medial popliteal nerve, right lower limb
- G57.42 Lesion of medial popliteal nerve, left lower limb
- G57.43 Lesion of medial popliteal nerve, bilateral lower limbs
G57.5 Tarsal tunnel syndrome
- G57.50 Tarsal tunnel syndrome, unspecified lower limb
- G57.51 Tarsal tunnel syndrome, right lower limb
- G57.52 Tarsal tunnel syndrome, left lower limb
- G57.53 Tarsal tunnel syndrome, bilateral lower limbs
G57.6 Lesion of plantar nerve
- G57.60 Lesion of plantar nerve, unspecified lower limb
- G57.61 Lesion of plantar nerve, right lower limb
- G57.62 Lesion of plantar nerve, left lower limb
- G57.63 Lesion of plantar nerve, bilateral lower limbs
G57.7 Causalgia of lower limb
- G57.70 Causalgia of unspecified lower limb
- G57.71 Causalgia of right lower limb
- G57.72 Causalgia of left lower limb
- G57.73 Causalgia of bilateral lower limbs
G57.8 Other specified mononeuropathies of lower limb
- G57.80 Other specified mononeuropathies of unspecified lower limb
- G57.81 Other specified mononeuropathies of right lower limb
- G57.82 Other specified mononeuropathies of left lower limb
- G57.83 Other specified mononeuropathies of bilateral lower limbs
G57.9 Unspecified mononeuropathy of lower limb
- G57.90 Unspecified mononeuropathy of unspecified lower limb
- G57.91 Unspecified mononeuropathy of right lower limb
- G57.92 Unspecified mononeuropathy of left lower limb
- G57.93 Unspecified mononeuropathy of bilateral lower limbs
Mononeuropathies of lower limb (G57)
- G59 Mononeuropathy in diseases classified elsewhere
Mononeuropathy in diseases classified elsewhere (G59)
Instructional Notations
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
