Posterior dislocation of lens, bilateral

This code signifies a condition where the crystalline lens of both eyes has dislocated posteriorly, meaning it has moved backward into the vitreous cavity. This displacement impairs vision and can lead to secondary complications like glaucoma or retinal detachment.

Use this code when documentation explicitly states a posterior dislocation of the lens affecting both eyes. This often occurs due to trauma, connective tissue disorders (e.g., Marfan syndrome), or advanced pseudoexfoliation syndrome. The physician's notes should clearly indicate the laterality as bilateral and specify the posterior direction of the dislocation.

• Ensure documentation specifies "posterior" dislocation; other directions (e.g., anterior, subluxation) have different codes.
• Verify laterality is explicitly stated as "bilateral" to avoid using unilateral codes.
• Consider coding any underlying systemic conditions (e.g., Marfan syndrome) as a primary diagnosis if they are the cause of the lens dislocation.