L80-L99: Other disorders of the skin and subcutaneous tissue

L89: Decubitus ulcer and pressure area

Decubitus ulcers, also known as pressure ulcers or bedsores, are a group of conditions that occur when sustained pressure cut off the blood supply to the skin, particularly on body parts that are bony or lack adequate padding, like the heels, hips, or tailbones. This situation can occur especially in individuals with limited mobility, such as those bedridden or in wheelchairs. Common symptoms include changes in skin color or texture, the development of an open sore, or a seriously damaged or necrotic tissue in severe cases. The progression of the condition can be classified into four stages, from stage I (earliest signs) to stage IV (most severe), where damage has extended into muscle and bone. These ulcers primarily affect the integumentary system (skin and related tissues), but if left untreated, infection can spread impacting other body systems.