CPT® Code 25035

The procedure described by CPT® Code 25035 involves a surgical incision into the deep bone cortex of the forearm and/or wrist, specifically targeting the radius, ulna, or one of the carpal bones. This intervention is typically performed to address serious conditions such as osteomyelitis, which is an infection of the bone, or a bone abscess, which is a localized collection of pus within the bone. The process begins with an incision through the skin and soft tissue that overlays the infected area, allowing access to the underlying bone. Once the incision is made, the periosteum, which is the dense layer of vascular connective tissue enveloping the bones, is carefully elevated to expose the infected region of the bone cortex. A small section, referred to as a button of cortical bone, is then removed to access the bone marrow beneath. This step is crucial as it alleviates pressure that may have built up due to inflammation in the bone marrow, thereby restoring blood flow to the affected area. In cases where pus is present, the initial incision may be enlarged using specialized instruments such as a chisel or gouge, extending the opening along the bone for a distance of one to two inches to ensure complete drainage of the abscess. If the infection has spread to the epiphysis, a portion of the epiphyseal cortex may also be excised to facilitate thorough treatment of the infection. Overall, this procedure is essential for managing severe bone infections and preventing further complications.