Is K35.8 a billable code?
No. K35.8 is a header code that groups 3 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
K35.8: Other and unspecified acute appendicitis
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
K35.8 groups related diagnoses under other and unspecified acute appendicitis. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under K35.8
- K35.80Unspecified acute appendicitis
- K35.890Other acute appendicitis without perforation or gangrene
- K35.891Other acute appendicitis without perforation, with gangrene
Other codes in K35 Acute appendicitis
K35.8 questions
What does K35.8 mean?
K35.8 is the ICD-10-CM code for Other and unspecified acute appendicitis. It is in chapter 11, Diseases of the digestive system (K00-K95).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.