K35.33
BillableAcute appendicitis with perforation, localized peritonitis, and gangrene, with abscess
K35.33 is the ICD-10-CM code for Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess. It is a billable, specific code valid for reimbursement.
K00-K95 Diseases of the digestive system
What this means — in plain language
MedlinePlus · NIHThe appendix is a small, tube-like organ attached to the first part of the large intestine. It is located in the lower right part of the abdomen. It has no known function. A blockage inside of the appendix causes appendicitis. The blockage leads to increased pressure, problems with blood flow, and inflammation. If the blockage is not treated, the appendix can burst and spread infection into the abdomen. This causes…
Read more about Appendicitis at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •(Acute) appendicitis with (peritoneal) abscess NOS
- •Ruptured appendix with localized peritonitis and abscess
Frequently asked questions
- What is ICD-10 code K35.33?
- K35.33 is the ICD-10-CM code for "Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess". It falls under K00-K95 Diseases of the digestive system.
- Is K35.33 a billable code?
- Yes — K35.33 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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