Other specified diseases of appendix

This code signifies a diagnosed condition affecting the appendix that is not appendicitis, an appendiceal abscess, or a specific other listed disease. It covers various less common or atypical pathologies of the appendix that are clearly documented by a physician.

Use this code when documentation specifies a disease of the appendix that doesn't fit more specific ICD-10-CM codes, such as a mucocele, diverticulosis, or endometriosis of the appendix. The physician's notes must clearly identify the specific, non-appendicitis related appendiceal pathology.

• Ensure the documentation explicitly states a specified appendiceal disease that is not acute or chronic appendicitis.
• Avoid using this code for vague or unspecified appendiceal findings; use K38.9 for unspecified diseases.
• Always review the full clinical picture to rule out more specific codes within the K38 category before assigning this code.