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Negative pressure wound therapy (NPWT) is a specialized treatment method designed to facilitate the healing process of both acute and chronic wounds, as well as to enhance the recovery of first- and second-degree burns. This therapy involves the controlled application of sub-atmospheric pressure to a localized area of the wound, which is sealed with a bio-occlusive dressing and connected to a vacuum pump. The primary goal of NPWT is to maintain a moist wound environment while simultaneously providing protection from external contaminants. This method effectively removes excess fluid from the wound site, reduces edema, and promotes increased blood circulation, all of which are critical factors in the healing process. The dressing used in NPWT typically consists of a foam or gauze filler material that is shaped to fit the contours of the wound. This filler is then covered with a transparent bio-occlusive film that creates a sealed environment. A drainage tube is inserted into the wound through a small slit in the film, allowing for the connection to the vacuum pump. The dressing is usually changed two to three times per week, during which the old dressing material and drainage tubing are disposed of in biohazard bags to ensure safety and compliance with health regulations. During each dressing change, the wound is assessed for signs of healing and infection. If necessary, the wound may be irrigated and cleaned, and topical medications can be applied to further support the healing process. After the wound is redressed, the patient or caregiver receives detailed instructions for ongoing care to ensure proper management of the wound. It is important to note that CPT® Code 97605 is specifically utilized when the total surface area of the wound(s) is less than or equal to 50 square centimeters, while CPT® Code 97606 is designated for wounds exceeding this size.
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