Deprivation amblyopia, left eye

This code describes a type of amblyopia, commonly known as "lazy eye," specifically affecting the left eye, that results from visual deprivation during the critical period of visual development. This deprivation prevents the normal development of visual pathways, leading to reduced visual acuity that cannot be corrected by refractive means alone.

Use this code when documentation indicates amblyopia in the left eye caused by a condition that physically obstructed or severely blurred vision during early childhood, such as congenital cataract, ptosis, or corneal opacities. The patient's medical record should clearly state the laterality and the underlying cause of the deprivation.

• Always specify laterality; do not use unspecified codes when left eye is documented.
• Code the underlying cause of the visual deprivation (e.g., congenital cataract) in addition to this amblyopia code.
• Distinguish from other types of amblyopia, such as strabismic or refractive amblyopia, which have different ICD-10-CM codes.