Chapter 6: Diseases of the nervous system (G00-G99)

ICD-10-CM 2027 chapter 6 contains 11 code blocks with 700 billable codes.

Code blocks

Block	Title	Billable
`G00-G09`	Inflammatory diseases of the central nervous system	35
`G10-G14`	Systemic atrophies primarily affecting the central nervous system	28
`G20-G26`	Extrapyramidal and movement disorders	46
`G30-G32`	Other degenerative diseases of the nervous system	21
`G35-G37`	Demyelinating diseases of the central nervous system	21
`G40-G47`	Episodic and paroxysmal disorders	205
`G50-G59`	Nerve, nerve root and plexus disorders	106
`G60-G65`	Polyneuropathies and other disorders of the peripheral nervous system	24
`G70-G73`	Diseases of myoneural junction and muscle	48
`G80-G83`	Cerebral palsy and other paralytic syndromes	54
`G89-G99`	Other disorders of the nervous system	112

Excludes2 (not included here):

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)