ICD-10-CM · FY2027
Chapter 6: Diseases of the nervous system (G00-G99)
Chapter 6 of the ICD-10-CM Tabular List covers G00-G99 and contains 932 codes across 68 categories, of which 700 are billable for FY2027.
Excludes2 — not included here
The conditions below are not part of this code, but a patient may have both at the same time. When documentation supports it, this code and the excluded code may both be reported.
- 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)
G00-G09 — Inflammatory diseases of the central nervous system
- G00Bacterial meningitis, not elsewhere classified
- G01Meningitis in bacterial diseases classified elsewhere
- G02Meningitis in other infectious and parasitic diseases classified elsewhere
- G03Meningitis due to other and unspecified causes
- G04Encephalitis, myelitis and encephalomyelitis
- G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
- G06Intracranial and intraspinal abscess and granuloma
- G07Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere
- G08Intracranial and intraspinal phlebitis and thrombophlebitis
- G09Sequelae of inflammatory diseases of central nervous system
G10-G14 — Systemic atrophies primarily affecting the central nervous system
G20-G26 — Extrapyramidal and movement disorders
G30-G32 — Other degenerative diseases of the nervous system
G35-G37 — Demyelinating diseases of the central nervous system
G40-G47 — Episodic and paroxysmal disorders
G50-G59 — Nerve, nerve root and plexus disorders
- G50Disorders of trigeminal nerve
- G51Facial nerve disorders
- G52Disorders of other cranial nerves
- G53Cranial nerve disorders in diseases classified elsewhere
- G54Nerve root and plexus disorders
- G55Nerve root and plexus compressions in diseases classified elsewhere
- G56Mononeuropathies of upper limb
- G57Mononeuropathies of lower limb
- G58Other mononeuropathies
- G59Mononeuropathy in diseases classified elsewhere
G60-G65 — Polyneuropathies and other disorders of the peripheral nervous system
G70-G73 — Diseases of myoneural junction and muscle
G80-G83 — Cerebral palsy and other paralytic syndromes
G89-G99 — Other disorders of the nervous system
- G89Pain, not elsewhere classified
- G90Disorders of autonomic nervous system
- G91Hydrocephalus
- G92Toxic encephalopathy
- G93Other disorders of brain
- G94Other disorders of brain in diseases classified elsewhere
- G95Other and unspecified diseases of spinal cord
- G96Other disorders of central nervous system
- G97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified
- G98Other disorders of nervous system not elsewhere classified
- G99Other disorders of nervous system in diseases classified elsewhere