Refractive amblyopia, left eye

This code describes a type of amblyopia (lazy eye) in the left eye caused by an uncorrected refractive error, such as significant farsightedness, nearsightedness, or astigmatism. The brain favors the clearer image from the other eye, leading to reduced vision development in the affected left eye despite no underlying structural abnormality.

Use this code when documentation clearly indicates amblyopia in the left eye is due to a refractive error. This diagnosis is typically made after a comprehensive eye examination, including refraction, confirms the presence of a significant refractive difference between the eyes or a high refractive error in the left eye alone, and other causes of vision loss have been ruled out.

• Ensure the documentation specifies "refractive" amblyopia and clearly identifies the "left eye."
• Do not confuse with other types of amblyopia (e.g., strabismic, deprivation) or with uncorrected refractive errors themselves.
• Code any underlying refractive error (e.g., hyperopia, myopia, astigmatism) separately as a co-diagnosis.