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Chapter 6

Diseases of the nervous system

G00–G99

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FY 2027 effective October 1, 2026 · 68 categories in this chapter

Blocks in This Chapter

ICD-10-CM groups this chapter's categories into 11 blocks of three-character categories.

  1. G00 –G09 Inflammatory diseases of the central nervous system
  2. G10 –G14 Systemic atrophies primarily affecting the central nervous system
  3. G20 –G26 Extrapyramidal and movement disorders
  4. G30 –G32 Other degenerative diseases of the nervous system
  5. G35 –G37 Demyelinating diseases of the central nervous system
  6. G40 –G47 Episodic and paroxysmal disorders
  7. G50 –G59 Nerve, nerve root and plexus disorders
  8. G60 –G65 Polyneuropathies and other disorders of the peripheral nervous system
  9. G70 –G73 Diseases of myoneural junction and muscle
  10. G80 –G83 Cerebral palsy and other paralytic syndromes
  11. G89 –G99 Other disorders of the nervous system

Categories

Inflammatory diseases of the central nervous system (G00-G09)

Systemic atrophies primarily affecting the central nervous system (G10-G14)

Extrapyramidal and movement disorders (G20-G26)

Other degenerative diseases of the nervous system (G30-G32)

Demyelinating diseases of the central nervous system (G35-G37)

Episodic and paroxysmal disorders (G40-G47)

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

Polyneuropathies and other disorders of the peripheral nervous system (G60-G65)

Diseases of myoneural junction and muscle (G70-G73)

Cerebral palsy and other paralytic syndromes (G80-G83)

Other disorders of the nervous system (G89-G99)