K65-K67: Diseases of peritoneum

K66: Other disorders of peritoneum

The category of "Other disorders of the peritoneum" (K66) encapsulates a range of conditions affecting the peritoneum, a continuous, thin layer of tissue that lines the abdominal cavity and covers the majority of the organs within it. These conditions can occur due to a number of causes - such as infection, surgery, physical injury, or a previous medical condition - and may include peritoneal adhesions, peritoneal abscesses, or peritoneal cysts, for example. Symptoms can vary significantly based on the specific disorder, but they often encompass abdominal pain or discomfort, bloating, changes in bowel habits, or unexplained weight loss. These disorders may not immediately reveal themselves and might only be diagnosed via imaging tests or laparoscopic procedures. The progress of these diseases is highly variable and depends largely on the underlying cause and individual patient health factors.