2021 ICD-10-CM Codes for Mononeuropathies of lower limb (G57)

Clinical Terms for Mononeuropathies of lower limb (G57)

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.

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.

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.

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.

Morton's Disease-. A nerve inflammation in the foot caused by chronic compression of the plantar nerve between the METATARSAL BONES.

Instructional Notations

Type 1 Excludes 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
    • ICD-10 Index

      • Diseases of the nervous system (G00–G99)

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

            • Mononeuropathies of lower limb (G57)
            • G57 - Mononeuropathies of lower limb NON-BILLABLE CODE
            • G57.0 - Lesion of sciatic nerve NON-BILLABLE CODE
            • G57.00 - Lesion of sciatic nerve, unspecified lower limb BILLABLE CODE
            • G57.01 - Lesion of sciatic nerve, right lower limb BILLABLE CODE
            • G57.02 - Lesion of sciatic nerve, left lower limb BILLABLE CODE
            • G57.03 - Lesion of sciatic nerve, bilateral lower limbs BILLABLE CODE
            • G57.1 - Meralgia paresthetica NON-BILLABLE CODE
            • G57.10 - Meralgia paresthetica, unspecified lower limb BILLABLE CODE
            • G57.11 - Meralgia paresthetica, right lower limb BILLABLE CODE
            • G57.12 - Meralgia paresthetica, left lower limb BILLABLE CODE
            • G57.13 - Meralgia paresthetica, bilateral lower limbs BILLABLE CODE
            • G57.2 - Lesion of femoral nerve NON-BILLABLE CODE
            • G57.20 - Lesion of femoral nerve, unspecified lower limb BILLABLE CODE
            • G57.21 - Lesion of femoral nerve, right lower limb BILLABLE CODE
            • G57.22 - Lesion of femoral nerve, left lower limb BILLABLE CODE
            • G57.23 - Lesion of femoral nerve, bilateral lower limbs BILLABLE CODE
            • G57.3 - Lesion of lateral popliteal nerve NON-BILLABLE CODE
            • G57.30 - Lesion of lateral popliteal nerve, unspecified lower limb BILLABLE CODE
            • G57.31 - Lesion of lateral popliteal nerve, right lower limb BILLABLE CODE
            • G57.32 - Lesion of lateral popliteal nerve, left lower limb BILLABLE CODE
            • G57.33 - Lesion of lateral popliteal nerve, bilateral lower limbs BILLABLE CODE
            • G57.4 - Lesion of medial popliteal nerve NON-BILLABLE CODE
            • G57.40 - Lesion of medial popliteal nerve, unspecified lower limb BILLABLE CODE
            • G57.41 - Lesion of medial popliteal nerve, right lower limb BILLABLE CODE
            • G57.42 - Lesion of medial popliteal nerve, left lower limb BILLABLE CODE
            • G57.43 - Lesion of medial popliteal nerve, bilateral lower limbs BILLABLE CODE
            • G57.5 - Tarsal tunnel syndrome NON-BILLABLE CODE
            • G57.50 - Tarsal tunnel syndrome, unspecified lower limb BILLABLE CODE
            • G57.51 - Tarsal tunnel syndrome, right lower limb BILLABLE CODE
            • G57.52 - Tarsal tunnel syndrome, left lower limb BILLABLE CODE
            • G57.53 - Tarsal tunnel syndrome, bilateral lower limbs BILLABLE CODE
            • G57.6 - Lesion of plantar nerve NON-BILLABLE CODE
            • G57.60 - Lesion of plantar nerve, unspecified lower limb BILLABLE CODE
            • G57.61 - Lesion of plantar nerve, right lower limb BILLABLE CODE
            • G57.62 - Lesion of plantar nerve, left lower limb BILLABLE CODE
            • G57.63 - Lesion of plantar nerve, bilateral lower limbs BILLABLE CODE
            • G57.7 - Causalgia of lower limb NON-BILLABLE CODE
            • G57.70 - Causalgia of unspecified lower limb BILLABLE CODE
            • G57.71 - Causalgia of right lower limb BILLABLE CODE
            • G57.72 - Causalgia of left lower limb BILLABLE CODE
            • G57.73 - Causalgia of bilateral lower limbs BILLABLE CODE
            • G57.8 - Other specified mononeuropathies of lower limb NON-BILLABLE CODE
            • G57.80 - Other specified mononeuropathies of unspecified lower limb BILLABLE CODE
            • G57.81 - Other specified mononeuropathies of right lower limb BILLABLE CODE
            • G57.82 - Other specified mononeuropathies of left lower limb BILLABLE CODE
            • G57.83 - Other specified mononeuropathies of bilateral lower limbs BILLABLE CODE
            • G57.9 - Unspecified mononeuropathy of lower limb NON-BILLABLE CODE
            • G57.90 - Unspecified mononeuropathy of unspecified lower limb BILLABLE CODE
            • G57.91 - Unspecified mononeuropathy of right lower limb BILLABLE CODE
            • G57.92 - Unspecified mononeuropathy of left lower limb BILLABLE CODE
            • G57.93 - Unspecified mononeuropathy of bilateral lower limbs BILLABLE CODE