Billable / Specific Code
ICD-10-CM K35.891 is the diagnosis code for Other acute appendicitis without perforation, with gangrene. 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 K35.891 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, K35.891 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
K35.891 is the ICD-10-CM diagnosis code for "Other acute appendicitis without perforation, with gangrene". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of K35.891 is K35.89 ("Other acute appendicitis"). K35.891 provides a more specific classification within this category.
K35.891 is located in Section K35-K38 — "Diseases of appendix" within Chapter 11 of the ICD-10-CM Tabular List.
Use K35.891 when the patients documented diagnosis matches "Other acute appendicitis without perforation, with gangrene" 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 Other acute appendicitis without perforation, with gangrene is K35.891.
Yes, K35.891 can be used as a primary diagnosis code since it is billable and specific.
K35.891 is in Chapter 11 of the ICD-10-CM Tabular List.
Yes, K35.891 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.