The incision for an ICD implant is typically around 5–7cm long and is usually made just below the collarbone. It does leave a scar, and the ICD itself creates a small visible or palpable bulge under the skin.
Everyone heals differently. In most people the scar fades and becomes less noticeable over time, though it rarely disappears completely. How prominent the bulge is depends on the size of the device and your individual build.
Some people find the visible reminder of the device emotionally difficult at first. This is entirely understandable and, for most people, becomes easier to live with over time. If you have significant concerns about the appearance of the scar or device, your GP or cardiac nurse can discuss options and refer you for support if needed.