Acute appendicitis with localized peritonitis
ICD-10 K35.3 is a used to indicate a diagnosis of acute appendicitis with localized peritonitis.
Acute appendicitis with localized peritonitis is characterized by inflammation of the appendix, often due to obstruction by fecaliths, lymphoid hyperplasia, or malignancy. The clinical presentation typically includes acute abdominal pain, often starting around the umbilicus and migrating to the right lower quadrant, accompanied by nausea, vomiting, and fever. Localized peritonitis indicates that the inflammatory process has extended to the peritoneum, leading to localized tenderness and guarding in the right lower quadrant. Anatomically, the appendix is a small, tube-like structure attached to the cecum, and its inflammation can lead to complications such as abscess formation or perforation if not treated promptly. Diagnosis is primarily clinical, supported by imaging studies such as ultrasound or CT scans, which can reveal an enlarged, fluid-filled appendix and localized fluid collections indicative of peritonitis. Laboratory tests may show leukocytosis. Early diagnosis and intervention are crucial to prevent complications, and treatment typically involves surgical removal of the appendix (appendectomy) and management of any associated peritoneal infection.
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
K35.3 covers cases of acute appendicitis that are specifically complicated by localized peritonitis. This includes situations where the inflammation has spread to the peritoneal cavity but has not resulted in generalized peritonitis or perforation.
K35.3 should be used when there is clear evidence of localized peritonitis associated with acute appendicitis. If there is no peritonitis, K35.0 should be used instead. Accurate imaging and clinical findings are essential for differentiation.
Documentation should include a detailed clinical assessment, imaging results showing localized peritoneal involvement, laboratory findings indicating infection, and a clear treatment plan outlining surgical intervention.
