ICD-11 classes
09 Diseases of the visual system
Impairment of visual functions
9D45 — Impairment of light sensitivity
5B55.0 — Vitamin A deficiency with night blindness

ICD-11 5B55.0 — Vitamin A deficiency with night blindness

Night blindness (poor adaptation to darkness) is generally the earliest manifestation of vitamin A deficiency. In mild cases, night blindness is apparent only after photic stress. Affected children no longer move around after dusk and prefer to sit in a secure corner, often unable to find their food or toys. Night blindness of recent onset in a preschool child is practically pathognomonic of vitamin A deficiency. All patients respond rapidly to therapy with vitamin A, usually within 48 hours.

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.

The diagnosis is coded elsewhere:

• Vitamin A deficiency #4499