Subluxation of lens, bilateral

This code signifies a partial dislocation of the crystalline lens in both eyes. The lens remains partially within the pupillary aperture but is displaced from its normal position, often due to weakened or ruptured zonular fibers. This condition can lead to visual disturbances such as monocular diplopia or astigmatism.

Use this code when documentation clearly indicates a subluxation of the lens affecting both the right and left eyes. This diagnosis is typically made during an ophthalmological examination, often noting phacodonesis (trembling of the lens) or visible displacement. Supporting documentation should include findings from a slit lamp examination.

• Differentiate from luxation (complete dislocation) of the lens, which has separate codes.
• Ensure laterality is clearly documented as bilateral; unilateral subluxation codes exist.
• Code any underlying cause, such as Marfan syndrome or trauma, as an additional diagnosis.