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ICD11

Diseases of the visual system (H00–H59)

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Diseases of the visual system is a chapter in ICD-11 that includes conditions affecting the eyes and visual pathways, which are essential for vision and visual perception. These disorders may involve the eyelids, conjunctiva, cornea, lens, retina, optic nerve, or associated structures, and can result from congenital anomalies, infections, inflammation, trauma, degenerative changes, or systemic diseases.

This chapter covers a wide range of visual conditions such as refractive errors, cataracts, glaucoma, retinal disorders, and disorders of the optic nerve. Proper classification within this chapter supports accurate diagnosis, appropriate treatment, and prevention of visual impairment and blindness, while also contributing to public health planning, research, and strategies aimed at preserving and improving visual health.

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Frequently asked questions

This chapter includes disorders affecting the eyes, visual pathways, and structures involved in vision.

It includes conditions such as cataracts, glaucoma, retinal disorders, refractive errors, and inflammatory eye diseases.

Eye conditions are coded here, while the underlying systemic disease is coded separately when applicable.

Yes. Both congenital and acquired disorders of the visual system are classified in this chapter.

It provides updated ophthalmic terminology and clearer differentiation between anatomical structures.

It supports appropriate eye care, prevention of visual impairment, and ophthalmic research.

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