K35.891 Other acute appendicitis without perforation, with gangrene

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• (Acute) appendicitis with gangrene NOS

MS-DRG index

Defines the logic of DRG(s) 371-373 in MDC 06.

Code annotations containing back-references to K35.891

Back-references to K35

• Type 1 Excludes: K65 Peritonitis ("peritonitis with or following appendicitis (K35.-)")

Diagnosis Index entries for K35.891

• Appendicitis (pneumococcal) (retrocecal) › with › gangrene
• Appendicitis (pneumococcal) (retrocecal) › acute (catarrhal) (fulminating) (obstructive) (retrocecal) (suppurative) › with › gangrene
• Appendicitis (pneumococcal) (retrocecal) › acute (catarrhal) (fulminating) (obstructive) (retrocecal) (suppurative) › specified NEC › with gangrene

Nearby codes

• K35.33 Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess
• K35.8 Other and unspecified acute appendicitis
• K35.80 Unspecified acute appendicitis
• K35.89 Other acute appendicitis
• K35.890 Other acute appendicitis without perforation or gangrene
• K35.891 Other acute appendicitis without perforation, with gangrene (this code)