From Wikipedia, the free encyclopedia
ICD-9 chapters
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
M8000–M9970
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 parentheses, and marked with a
dagger symbol of the
Times New Roman font († ).
Inflammatory diseases of the central nervous system (320–326)
Hereditary and Degenerative diseases of the central nervous system (330–337)
Other disorders of the central nervous system (340–349)
Disorders of the peripheral nervous system (350–359)
Disorders of the eye and adnexa (360–379)
360 Disorders of the
globe
361
Retinal detachments and defects
362 Other retinal disorders
363 Chorioretinal inflammations and scars and other disorders of
choroid
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
366.0 Infantile, juvenile and presenile cataract
366.1 Senile cataract
366.2 Traumatic cataract
366.3 Cataract secondary to ocular disorders
366.4 Cataract associated with other disorders
366.5 After-cataract
366.8 Other cataract
366.9 Unspecified
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
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
376 Disorders of the
orbit
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)
Diseases of the nervous system
Signs and symptoms Investigations and diagnosis
Clinical
Serological and CSF
Radiological
Frexalimab
Approved treatment Other treatments Demyelinating diseases
Other