Mononeuropathy

Alphabetical Index

Use the alphabetical index for the main term mononeuropathy to review the available sub terms and properly select the ICD-10 code with the highest degree of specificity. Instructional notations will guide the coder with information such as "see", "see also", "with", "without", "due to", and "code by site".

  • Mononeuropathy - G58.9 Mononeuropathy, unspecified
    • carpal tunnel syndrome - See: Syndrome, carpal tunnel;
    • diabetic NEC - See: E08-E13 with .41;
    • femoral nerve - See: Lesion, nerve, femoral;
    • ilioinguinal nerve - G57.8 Other specified mononeuropathies of lower limb
    • in diseases classified elsewhere
    • intercostal - G58.0 Intercostal neuropathy
    • lower limb - G57.9 Unspecified mononeuropathy of lower limb
      • causalgia - See: Causalgia, lower limb;
      • femoral nerve - See: Lesion, nerve, femoral;
      • meralgia paresthetica - G57.1 Meralgia paresthetica
      • plantar nerve - See: Lesion, nerve, plantar;
      • popliteal nerve - See: Lesion, nerve, popliteal;
      • sciatic nerve - See: Lesion, nerve, sciatic;
      • specified NEC - G57.8 Other specified mononeuropathies of lower limb
      • tarsal tunnel syndrome - See: Syndrome, tarsal tunnel;
    • median nerve - See: Lesion, nerve, median;
    • multiplex - G58.7 Mononeuritis multiplex
    • obturator nerve - G57.8 Other specified mononeuropathies of lower limb
    • popliteal nerve - See: Lesion, nerve, popliteal;
    • radial nerve - See: Lesion, nerve, radial;
    • saphenous nerve - G57.8 Other specified mononeuropathies of lower limb
    • specified NEC - G58.8 Other specified mononeuropathies
    • tarsal tunnel syndrome - See: Syndrome, tarsal tunnel;
    • tuberculous - A17.83 Tuberculous neuritis
    • ulnar nerve - See: Lesion, nerve, ulnar;
    • upper limb - G56.9 Unspecified mononeuropathy of upper limb
      • carpal tunnel syndrome - See: Syndrome, carpal tunnel;
      • causalgia - See: Causalgia;
      • median nerve - See: Lesion, nerve, median;
      • radial nerve - See: Lesion, nerve, radial;
      • specified site NEC - G56.8 Other specified mononeuropathies of upper limb
      • ulnar nerve - See: Lesion, nerve, ulnar;

Clinical Terms

The following are some of the clinical term definitions related or applicable to mononeuropathy within the ICD-10 index for Diseases and Injuries.

Carpal Tunnel Syndrome: Entrapment of the MEDIAN NERVE in the carpal tunnel, which is formed by the flexor retinaculum and the CARPAL BONES. This syndrome may be associated with repetitive occupational trauma (CUMULATIVE TRAUMA DISORDERS); wrist injuries; AMYLOID NEUROPATHIES; rheumatoid arthritis (see ARTHRITIS, RHEUMATOID); ACROMEGALY; PREGNANCY; and other conditions. Symptoms include burning pain and paresthesias involving the ventral surface of the hand and fingers which may radiate proximally. Impairment of sensation in the distribution of the median nerve and thenar muscle atrophy may occur. (Joynt, Clinical Neurology, 1995, Ch51, p45)

Causalgia: A complex regional pain syndrome characterized by burning pain and marked sensitivity to touch (HYPERESTHESIA) in the distribution of an injured peripheral nerve. Autonomic dysfunction in the form of sudomotor (i.e., sympathetic innervation to sweat glands), vasomotor, and trophic skin changes may also occur. (Adams et al., Principles of Neurology, 6th ed, p1359)

Femoral Nerve: A nerve originating in the lumbar spinal cord (usually L2 to L4) and traveling through the lumbar plexus to provide motor innervation to extensors of the thigh and sensory innervation to parts of the thigh, lower leg, and foot, and to the hip and knee joints.

Lower Extremity: The region of the lower limb in animals, extending from the gluteal region to the FOOT, and including the BUTTOCKS; HIP; and LEG.

Median Nerve: A major nerve of the upper extremity. In humans, the fibers of the median nerve originate in the lower cervical and upper thoracic spinal cord (usually C6 to T1), travel via the brachial plexus, and supply sensory and motor innervation to parts of the forearm and hand.

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.

Mononeuropathies: Disease or trauma involving a single peripheral nerve in isolation, or out of proportion to evidence of diffuse peripheral nerve dysfunction. Mononeuropathy multiplex refers to a condition characterized by multiple isolated nerve injuries. Mononeuropathies may result from a wide variety of causes, including ISCHEMIA; traumatic injury; compression; CONNECTIVE TISSUE DISEASES; CUMULATIVE TRAUMA DISORDERS; and other conditions.

Radial Nerve: A major nerve of the upper extremity. In humans the fibers of the radial nerve originate in the lower cervical and upper thoracic spinal cord (usually C5 to T1), travel via the posterior cord of the brachial plexus, and supply motor innervation to extensor muscles of the arm and cutaneous sensory fibers to extensor regions of the arm and hand.

Sciatic Nerve: A nerve which originates in the lumbar and sacral spinal cord (L4 to S3) and supplies motor and sensory innervation to the lower extremity. The sciatic nerve, which is the main continuation of the sacral plexus, is the largest nerve in the body. It has two major branches, the TIBIAL NERVE and the PERONEAL NERVE.

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)

Ulnar Nerve: A major nerve of the upper extremity. In humans, the fibers of the ulnar nerve originate in the lower cervical and upper thoracic spinal cord (usually C7 to T1), travel via the medial cord of the brachial plexus, and supply sensory and motor innervation to parts of the hand and forearm.

Upper Extremity: The region of the upper limb in animals, extending from the deltoid region to the HAND, and including the ARM; AXILLA; and SHOULDER.