All ICD10 Codes
Chapter 6

G00–G99: Diseases of the Nervous System

Diseases of the Nervous System diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
All CodesBillable Only
Internal Codes
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  • 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

  • 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

  • G60—

    Hereditary and idiopathic neuropathy

  • G60.0—

    Hereditary motor and sensory neuropathy

  • G60.1—

    Refsum's disease

  • G60.2—

    Neuropathy in association with hereditary ataxia

  • G60.3—

    Idiopathic progressive neuropathy

  • G60.8—

    Other hereditary and idiopathic neuropathies

  • G60.9—

    Hereditary and idiopathic neuropathy, unspecified

  • G61—

    Inflammatory polyneuropathy

  • G61.0—

    Guillain-Barre syndrome

  • G61.1—

    Serum neuropathy

  • G61.8—

    Other inflammatory polyneuropathies

  • G61.81—

    Chronic inflammatory demyelinating polyneuritis

  • G61.82—

    Multifocal motor neuropathy

  • G61.89—

    Other inflammatory polyneuropathies

  • G61.9—

    Inflammatory polyneuropathy, unspecified

  • G62—

    Other and unspecified polyneuropathies

  • G62.0—

    Drug-induced polyneuropathy

  • G62.1—

    Alcoholic polyneuropathy

  • G62.2—

    Polyneuropathy due to other toxic agents

  • G62.8—

    Other specified polyneuropathies

  • G62.81—

    Critical illness polyneuropathy

  • G62.82—

    Radiation-induced polyneuropathy

  • G62.89—

    Other specified polyneuropathies

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