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What procedure does CPT code 66820 refer to?

  1. Posterior capsulotomy with membrane removed

  2. Posterior capsulotomy with membrane cut

  3. Lens material removal with aspiration

  4. Lens material removal via phacoemulsification

The correct answer is: Posterior capsulotomy with membrane cut

CPT code 66820 specifically refers to a posterior capsulotomy with the membrane cut. This procedure is performed when there is opacification of the posterior capsule after cataract surgery, a common complication known as secondary cataract. During a posterior capsulotomy, the surgeon makes an opening in the cloudy capsule behind the artificial lens, which allows light to pass through and restores vision. In this context, the term "cut" specifically indicates that the membrane is incised or opened to provide visual clarity, distinguishing it from other procedures such as complete removal of the membrane or other lens-related surgeries. Understanding the precise terminology is crucial for coding accurately and ensuring proper documentation of the procedure performed.