Is K35.80 a billable code?
Yes. K35.80 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
K35.80: Unspecified acute appendicitis
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
K35.80 is a billable ICD-10-CM diagnosis code for unspecified acute appendicitis. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with K35.80 already added.Good Faith EstimateStart a cost estimate with K35.80 already added.CMS-1500 Claim FormFill a claim form with K35.80 in box 21.
Other codes in K35.8 Other and unspecified acute appendicitis
K35.80 questions
What does K35.80 mean?
K35.80 is the ICD-10-CM code for 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.