Diseases of the nervous system (G00–G99)
ICD-10-CM Chapter 6 (G00–G99) codes cover a wide range of diseases and disorders of the nervous system. These codes are used to classify conditions affecting the brain, spinal cord, peripheral nerves, and associated structures.
This chapter includes diagnoses related to infections like meningitis and encephalitis, degenerative diseases such as Parkinson’s and Alzheimer’s, demyelinating diseases including multiple sclerosis, and nerve root disorders like radiculopathy. It also encompasses various neuropathies, epileptic disorders, and neurovascular conditions like stroke. The codes help healthcare professionals accurately document nervous system diseases, aiding in effective treatment planning and tracking of neurological health conditions.
- Inflammatory diseases of the central nervous system (G00-G09
- Systemic atrophies primarily affecting the central nervous s
- Extrapyramidal and movement disorders (G20-G26)
- Other degenerative diseases of the nervous system (G30-G32)
- Demyelinating diseases of the central nervous system (G35-G3
- Episodic and paroxysmal disorders (G40-G47)
- Nerve, nerve root and plexus disorders (G50-G59)
- Polyneuropathies and other disorders of the peripheral nervo
- Diseases of myoneural junction and muscle (G70-G73)
- Cerebral palsy and other paralytic syndromes (G80-G83)
- Other disorders of the nervous system (G89-G99)
Diseases of the nervous system (G00–G99)
Excludes2: 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)
Inflammatory diseases of the central nervous system (G00-G09)
- Bacterial meningitis, not elsewhere classified (G00)
- Meningitis in bacterial diseases classified elsewhere (G01)
- Meningitis in other infectious and parasitic diseases classified elsewhere (G02)
- Meningitis due to other and unspecified causes (G03)
- Encephalitis, myelitis and encephalomyelitis (G04)
- Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere (G05)
- Intracranial and intraspinal abscess and granuloma (G06)
- Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere (G07)
- Intracranial and intraspinal phlebitis and thrombophlebitis (G08)
- Sequelae of inflammatory diseases of central nervous system (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)
- Disorders of trigeminal nerve (G50)
- Facial nerve disorders (G51)
- Disorders of other cranial nerves (G52)
- Cranial nerve disorders in diseases classified elsewhere (G53)
- Nerve root and plexus disorders (G54)
- Nerve root and plexus compressions in diseases classified elsewhere (G55)
- Mononeuropathies of upper limb (G56)
- Mononeuropathies of lower limb (G57)
- Other mononeuropathies (G58)
- Mononeuropathy in diseases classified elsewhere (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)
- Cerebral palsy (G80)
- Hemiplegia and hemiparesis (G81)
- Paraplegia (paraparesis) and quadriplegia (quadriparesis) (G82)
- Other paralytic syndromes (G83)
Other disorders of the nervous system (G89-G99)
- Pain, not elsewhere classified (G89)
- Disorders of autonomic nervous system (G90)
- Hydrocephalus (G91)
- Toxic encephalopathy (G92)
- Other disorders of brain (G93)
- Other disorders of brain in diseases classified elsewhere (G94)
- Other and unspecified diseases of spinal cord (G95)
- Other disorders of central nervous system (G96)
- Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified (G97)
- Other disorders of nervous system not elsewhere classified (G98)
- Other disorders of nervous system in diseases classified elsewhere (G99)
