L98: Other disorders of skin and subcutaneous tissue, not elsewhere classified

L98.6: Other infiltrative disorders of skin and subcutaneous tissue

L98.6, or Other infiltrative disorders of skin and subcutaneous tissue, refer to a group of conditions where the skin or the layers beneath it become filled with substances that shouldn't ordinarily be present in such amounts. These infiltrates could be fluids, cells, or other materials like fats or proteins. As the skin is the frontline barrier of the body, it continuously interacts with the environment, and these interactions can sometimes lead to disruptive conditions. The infiltration might lead to changes in the skin's normal appearance, giving it a darker, thicker, or uneven texture. Symptoms of these conditions can vary and may include inflammation, itching, pain or discomfort in certain areas. Since these disorders entail an unusual accumulation of various substances in the skin, they could potentially affect multiple systems in the body depending upon the nature of infiltrative material involved.