Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess
Billable / specific
K35.33 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Applicable to
- (Acute) appendicitis with (peritoneal) abscess NOS
- Ruptured appendix with localized peritonitis and abscess
Excludes2
Not included here — may be reported together when both conditions exist.
- certain conditions originating in the perinatal period (P04-P96) (from K35)
- certain infectious and parasitic diseases (A00-B99) (from K35)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from K35)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) (from K35)
- endocrine, nutritional and metabolic diseases (E00-E88) (from K35)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from K35)
- neoplasms (C00-D49) (from K35)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from K35)
Also known as
- (Acute) appendicitis with (peritoneal) abscess NOS
- Ruptured appendix with localized peritonitis and abscess
- Abscess, appendix
- Abscess, cecum
- Abscess, ileocecal
- Abscess, iliac, fossa
- Abscess, periappendicular
- Abscess, pericecal
- Abscess, peritoneum, peritoneal, with appendicitis
- Abscess, perityphlic
- Abscess, postcecal
- Abscess, subcecal
- Abscess, vermiform appendix
- Appendicitis, with peritoneal abscess
- Appendicitis, with peritonitis NEC
- Appendicitis, acute, with peritoneal abscess
- Appendicitis, acute, with peritonitis NEC
Parent code
- K35.3Acute appendicitis with localized peritonitisHeader