Billable / Specific Code
ICD-10-CM K35.33 is the diagnosis code for Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess. This code falls under the section "Diseases of appendix" within Chapter 11 — Diseases of the digestive system (K00-K95). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where K35.33 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, K35.33 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
K35.33 is the ICD-10-CM diagnosis code for "Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of K35.33 is K35.3 ("Acute appendicitis with localized peritonitis"). K35.33 provides a more specific classification within this category.
K35.33 is located in Section K35-K38 — "Diseases of appendix" within Chapter 11 of the ICD-10-CM Tabular List.
Use K35.33 when the patients documented diagnosis matches "Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess is K35.33.
Yes, K35.33 can be used as a primary diagnosis code since it is billable and specific.
K35.33 is in Chapter 11 of the ICD-10-CM Tabular List.
Yes, K35.33 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.