List of ICD-9 codes 320–389: diseases of the nervous system and sense organs
| Chapter | Block | Title |
|---|---|---|
| I | 001–139 | Infectious and Parasitic Diseases |
| II | 140–239 | Neoplasms |
| III | 240–279 | Endocrine, Nutritional and Metabolic Diseases, and Immunity Disorders |
| IV | 280–289 | Diseases of the Blood and Blood-forming Organs |
| V | 290–319 | Mental Disorders |
| VI | 320–389 | Diseases of the Nervous System and Sense Organs |
| VII | 390–459 | Diseases of the Circulatory System |
| VIII | 460–519 | Diseases of the Respiratory System |
| IX | 520–579 | Diseases of the Digestive System |
| X | 580–629 | Diseases of the Genitourinary System |
| XI | 630–679 | Complications of Pregnancy, Childbirth, and the Puerperium |
| XII | 680–709 | Diseases of the Skin and Subcutaneous Tissue |
| XIII | 710–739 | Diseases of the Musculoskeletal System and Connective Tissue |
| XIV | 740–759 | Congenital Anomalies |
| XV | 760–779 | Certain Conditions originating in the Perinatal Period |
| XVI | 780–799 | Symptoms, Signs and Ill-defined Conditions |
| XVII | 800–999 | Injury and Poisoning |
| E800–E999 | Supplementary Classification of External Causes of Injury and Poisoning | |
| V01–V82 | Supplementary Classification of Factors influencing Health Status and Contact with Health Services | |
| Morphology of Neoplasms |
This is a shortened version of the sixth chapter of the ICD-9: Diseases of the Nervous System and Sense Organs. It covers ICD codes 320 to 389. The full chapter can be found on pages 215 to 258 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1. Both volumes can be downloaded for free from the website of the World Health Organization.
In the ICD-9 system, a disease may have a cause listed in one chapter, and its manifestations listed in another. For example, Tuberculous meningitis is caused by a bacterial infection, and is therefore listed in Chapter 1, Infectious and parasitic diseases. However, as it results in a disorder of the nervous system, it is also listed in this chapter. An asterisk (*) means that a disease has an underlying cause which can be found elsewhere in the ICD. A code referring to such an underlying cause may be right next to the name, in parenthesis, and marked with a dagger symbol of the Times New Roman font (†).
Inflammatory diseases of the central nervous system (320–326)[]
- 320 Bacterial meningitis
- 320.0 Haemophilus meningitis
- 320.1 Pneumococcal meningitis
- 320.2
- 320.3
- 320.4* Tuberculous meningitis (013.0†)
- 320.5* Meningococcal meningitis (036.0†)
- 320.7* Meningitis in other bacterial diseases classified elsewhere
- 320.8 Meningitis due to other specified bacteria
- 320.9 Meningitis due to unspecified bacterium
- 321* Meningitis due to other organisms
- 321.0* Fungal meningitis (110–118†)
- 321.1* Meningitis due to Coxsackie virus (047.0†)
- 321.2* Meningitis due to ECHO virus (047.1†)
- 321.3* Meningitis due to herpes zoster virus (053.0†)
- 321.4* Meningitis due to herpes simplex virus (054.7†)
- 321.5* Meningitis due to mumps virus (072.1†)
- 321.6* Meningitis due to lymphocytic choriomeningitis virus (049.0†)
- 321.7* Meningitis due to other and unspecified viruses
- 321.8* Other
- 322 Meningitis of unspecified cause
- 322.0 Nonpyogenic meningitis
- 322.1 Eosinophilic meningitis
- 322.2 Chronic meningitis
- 322.9 Meningitis, unspecified
- 323 Encephalitis, myelitis and encephalomyelitis
- 323.0* Kuru (046.0†)
- 323.1* Subacute sclerosing panencephalitis (046.2†)
- 323.2* Poliomyelitis (045.–†)
- 323.3* Arthropod-borne viral encephalitis (062-064†)
- 323.4* Other encephalitis due to infection
- 323.5 Encephalitis following immunization procedures
- 323.6* Postinfectious encephalitis
- 323.7*
- 323.8 Other
- 323.9 Unspecified cause
- 324 Intracranial and intraspinal abscess
- 325 Phlebitis and thrombophlebitis of
- 326 Late effects of intracranial abscess or pyogenic infection
Hereditary and Degenerative diseases of the central nervous system (330–337)[]
- 330 Cerebral degenerations usually manifest in childhood
- 331 Other cerebral degenerations
- 331.0 Alzheimer's disease
- 331.1 Pick's disease
- 331.2 Senile degeneration of brain
- 331.3 Communicating hydrocephalus
- 331.4 Obstructive hydrocephalus
- 331.5* Jakob-Creutzfeldt disease (046.1†)
- 331.6* Progressive multifocal leucoencephalopathy (046.3†)
- 331.7* Cerebral degeneration in other diseases classified elsewhere
- 331.8 Other cerebral degeneration
- 331.9 Unspecified
- 332 Parkinson's disease
- 333 Other extrapyramidal disease and abnormal movement disorders
- 333.0 Other degenerative diseases of the basal ganglia
- 333.1 Essential and other specified forms of tremor
- 333.2 Myoclonus
- 333.3 Tics of organic origin
- 333.4 Huntington's chorea
- 333.5 Other choreas
- 333.6 Idiopathic torsion dystonia
- 333.7 Symptomatic torsion dystonia
- 333.8 Fragments of torsion dystonia
- 333.9 Other and unspecified
- 334 Spinocerebellar disease
- 334.0 Friedreich's ataxia
- 334.1 Hereditary spastic paraplegia
- 334.2
- 334.3 Other cerebellar ataxia
- 334.4* Cerebellar ataxia in diseases classified elsewhere
- 334.8 Other
- 334.9 Unspecified
- 335 Anterior horn cell disease
- 336 Other diseases of spinal cord
- 337 Disorders of the autonomic nervous system
Other disorders of the central nervous system (340–349)[]
- 340 Multiple sclerosis
- 341 Other demyelinating diseases of central nervous system
- 342 Hemiplegia
- 343
- 344 Other paralytic syndromes
- 345 Epilepsy
- 346 Migraine
- 347 Cataplexy and narcolepsy
- 348 Other conditions of brain
- 349 Other and unspecified disorders of the nervous system
Disorders of the peripheral nervous system (350–359)[]
- 350 Trigeminal nerve disorders
- 351 Facial nerve disorders
- 351.0 Bell's palsy
- 351.1 Geniculate ganglionitis
- 351.8 Other
- 351.9 Unspecified
- 352 Disorders of other cranial nerves
- 353 Nerve root and plexus disorders
- 354 Mononeuritis of upper limb and mononeuritis multiplex
- 355 Mononeuritis of lower limb
- 356 Hereditary and idiopathic peripheral neuropathy
- 357 Inflammatory and toxic neuropathy
- 357.0 Acute infective polyneuritis
- 357.1* Polyneuropathy in collagen vascular disease
- 357.2* Polyneuropathy in diabetes (250.5†)
- 357.3* Polyneuropathy in malignant disease (140–208†)
- 357.4* Polyneuropathy in other diseases classified elsewhere
- 357.5 Alcoholic polyneuropathy
- 357.6 Polyneuropathy due to drugs
- 357.7 Polyneuropathy due to other toxic agents
- 357.8 Other
- 357.9 Unspecified
- 358 Myoneural disorders
- 359 Muscular dystrophies and other myopathies
Disorders of the eye and adnexa (360–379)[]
- 360 Disorders of the globe
- 360.0 Purulent endophthalmitis
- 360.1 Other endophthalmitis
- 360.2 Degenerative disorders of globe
- 360.3 of eye
- 360.4 Degenerated conditions of globe
- 360.5 Retained (old) intraocular foreign body, magnetic
- 360.6 Retained (old) intraocular foreign body, nonmagnetic
- 360.8 Other disorders of globe
- 360.9 Unspecified
- 361 Retinal detachments and defects
- 362 Other retinal disorders
- 362.0* Diabetic retinopathy (250.4†)
- 362.1 Other background retinopathy and retinal vascular changes
- 362.2 Other proliferative retinopathy
- 362.3 Retinal vascular occlusion
- 362.4 Separation of retinal layers
- 362.5 Degeneration of macula and posterior pole
- 362.6 Peripheral retinal degenerations
- 362.7 Hereditary retinal dystrophies
- 362.8 Other retinal disorders
- 362.9 Unspecified
- 363 Chorioretinal inflammations and scars and other disorders of choroid
- 363.0 Focal chorioretinitis and focal
- 363.1 Disseminated chorioretinitis and disseminated retinochoroiditis
- 363.2 Other and unspecified forms of chorioretinitis and retinochoroiditis
- 363.3 Chorioretinal scars
- 363.4 Choroidal degenerations
- 363.6 Choroidal haemorrhage and rupture
- 363.7 Choroidal detachment
- 363.8 Other disorders of choroid
- 363.9 Unspecified
- 364 Disorders of iris and ciliary body
- 364.0 Acute and subacute iridocyclitis
- 364.1 Chronic iridocyclitis
- 364.2 Certain types of iridocyclitis
- 364.3 Unspecified iridocyclitis
- 364.4 Vascular disorders of iris and ciliary body
- 364.5 Degenerations of iris and ciliary body
- 364.6 Cysts of iris, ciliary body and anterior chamber
- 364.7 Adhesions and disruptions of iris and ciliary body
- 364.8 Other disorders of iris and ciliary body
- 364.9 Unspecified
- 365 Glaucoma
- 365.0 Borderline glaucoma
- 365.1 Open-angle glaucoma
- 365.2 Primary angle-closure glaucoma
- 365.3 Corticosteroid-induced glaucoma
- 365.4 Glaucoma associated with congenital anomalies, with dystrophies and with systemic syndromes
- 365.5 Glaucoma associated with disorders of the lens
- 365.6 Glaucoma associated with other ocular disorders
- 365.8 Other glaucoma
- 365.9 Unspecified
- 366 Cataract
- 367 Disorders of refraction and accommodation
- 368 Visual disturbances
- 369 Blindness and low vision
- 369.0 Blindness, both eyes
- 369.1 Blindness, one eye, low vision other eye
- 369.2 Low vision, both eyes
- 369.3 Unqualified visual loss, both eyes
- 369.4 Legal blindness, as defined in U.S.A.
- 369.6 Blindness, one eye
- 369.7 Low vision, one eye
- 369.8 Unqualified visual loss, one eye
- 369.9 Unspecified visual loss
- 370 Keratitis
- 370.0 Corneal ulcer
- 370.1* (054.4†)
- 370.2 Other superficial keratitis without conjunctivitis
- 370.3 Certain types of keratoconjunctivitis
- 370.4 Other and unspecified keratoconjunctivitis
- 370.5 Interstitial and deep keratitis
- 370.6 Corneal neovascularization
- 370.8 Other forms of keratitis
- 370.9 Unspecified
- 371 Corneal opacity and other disorders of cornea
- 372 Disorders of conjunctiva
- 372.0 Acute conjunctivitis
- 372.1 Chronic conjunctivitis
- 372.2 Blepharoconjunctivitis
- 372.3 Other and unspecified conjunctivitis
- 372.4 Pterygium
- 372.5 Conjunctival degenerations and deposits
- 372.6 Conjunctival scars
- 372.7 Conjunctival vascular disorders and cysts
- 372.8 Other disorders of conjunctiva
- 372.9 Unspecified
- 373 Inflammation of eyelids
- 374 Other disorders of eyelids
- 375 Disorders of lacrimal system
- 375.0 Dacryoadenitis
- 375.1 Other disorders of lacrimal gland
- 375.2 Epiphora
- 375.3 Acute and unspecified inflammation of lacrimal passages
- 375.4 Chronic inflammation of
- 375.5 Stenosis and insufficiency of lacrimal passages
- 375.6 Other changes of lacrimal passages
- 375.8 Other disorders of lacrimal system
- 375.9 Unspecified
- 376 Disorders of the orbit
- 376.0 Acute inflammation of orbit
- 376.1 Chronic inflammatory disorders of orbit
- 376.2* Endocrine exophthalmos
- 376.3 Other exophthalmic conditions
- 376.4 Deformity of orbit
- 376.5 Enophthalmos
- 376.6 Retained (old) foreign body following penetrating wound of orbit
- 376.8 Other disorders of orbit
- 376.9 Unspecified
- 377 Disorders of optic nerve and visual pathways
- 378 Strabismus and other disorders of binocular eye movements
- 379 Other disorders of eye
Diseases of the ear and mastoid process (380–389)[]
- 380 Disorders of external ear
- 381 Nonsuppurative otitis media and Eustachian tube disorders
- 381.0 Acute nonsuppurative otitis media
- 381.1 Chronic serous otitis media
- 381.2 Chronic mucoid otitis media
- 381.3 Other and unspecified chronic nonsuppurative otitis media
- 381.4 Nonsuppurative otitis media, not specified as acute or chronic
- 381.5
- 381.6 Obstruction of Eustachian tube
- 381.7 Patulous Eustachian tube
- 381.8 Other disorders of Eustachian tube
- 381.9 Unspecified Eustachian tube disorder
- 382 Suppurative and unspecified otitis media
- 383 Mastoiditis and related conditions
- 384 Other disorders of tympanic membrane
- 385 Other disorders of middle ear and mastoid
- 386 and other disorders of vestibular system
- 387 Otosclerosis
- 388 Other disorders of ear
- 389 Deafness
Categories:
- International Classification of Diseases