Mononeuropathies of lower limb (G57)
Clinical Information
Femoral Neuropathy - Disease involving the femoral nerve. The femoral nerve may be injured by ISCHEMIA (e.g., in association with DIABETIC NEUROPATHIES), nerve compression, trauma, COLLAGEN DISEASES, and other disease processes. Clinical features include MUSCLE WEAKNESS or PARALYSIS of hip flexion and knee extension, ATROPHY of the QUADRICEPS MUSCLE, reduced or absent patellar reflex, and impaired sensation over the anterior and medial thigh.
Sciatic Neuropathy - Disease or damage involving the SCIATIC NERVE, which divides into the PERONEAL NERVE and TIBIAL NERVE (see also PERONEAL NEUROPATHIES and TIBIAL NEUROPATHY). Clinical manifestations may include SCIATICA or pain localized to the hip, PARESIS or PARALYSIS of posterior thigh muscles and muscles innervated by the peroneal and tibial nerves, and sensory loss involving the lateral and posterior thigh, posterior and lateral leg, and sole of the foot. The sciatic nerve may be affected by trauma; ISCHEMIA; COLLAGEN DISEASES; and other conditions. (From Adams et al., Principles of Neurology, 6th ed, p1363)
Tarsal Tunnel Syndrome - Entrapment of the distal branches of the posterior TIBIAL NERVE (which divides into the medial plantar, lateral plantar, and calcanial nerves) in the tarsal tunnel, which lies posterior to the internal malleolus and beneath the retinaculum of the flexor muscles of the foot. Symptoms include ankle pain radiating into the foot which tends to be aggravated by walking. Examination may reveal Tinel's sign (radiating pain following nerve percussion) over the tibial nerve at the ankle, weakness and atrophy of the small foot muscles, or loss of sensation in the foot. (From Foot Ankle 1990;11(1):47-52)
Tibial Nerve - The medial terminal branch of the sciatic nerve. The tibial nerve fibers originate in lumbar and sacral spinal segments (L4 to S2). They supply motor and sensory innervation to parts of the calf and foot.
Tibial Neuropathy - Disease of the TIBIAL NERVE (also referred to as the posterior tibial nerve). The most commonly associated condition is the TARSAL TUNNEL SYNDROME. However, LEG INJURIES; ISCHEMIA; and inflammatory conditions (e.g., COLLAGEN DISEASES) may also affect the nerve. Clinical features include PARALYSIS of plantar flexion, ankle inversion and toe flexion as well as loss of sensation over the sole of the foot. (From Joynt, Clinical Neurology, 1995, Ch51, p32)
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.
- current traumatic nerve disorder - see nerve injury by body region
Diseases of the nervous system (G00–G99)
Nerve, nerve root and plexus disorders (G50-G59)
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)