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Free Medical Coding > ICD10 CM > 2025 ICD-10-CM Codes > 2025 ICD-10-CM Codes K00-K95 – Diseases of the digestive system (K00-K95) > 2025 ICD-10-CM Codes K35-K38 – Diseases of appendix (K35-K38) > 2025 ICD-10-CM Codes K35 – Acute appendicitis (K35) > 2025 ICD-10-CM Codes K35.3 – Acute appendicitis with localized peritonitis (K35.3) > 2025 ICD-10-CM Diagnosis Code K35.32 – Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess (K35.32)

2025 ICD-10-CM Diagnosis Code K35.32 – Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess (K35.32)

2019 – New Code2019202020212022202320242025Billable/Specific Code
  • K35.32 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM K35.32 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of K35.32 – other international versions of ICD-10 K35.32 may differ.

ICD-10-CM K35.32 is grouped within Diagnostic Related Group(s):

  • 338 Appendectomy with complicated principal diagnosis with mcc
  • 339 Appendectomy with complicated principal diagnosis with cc
  • 340 Appendectomy with complicated principal diagnosis without cc/mcc
  • 371 Major gastrointestinal disorders and peritoneal infections with mcc
  • 372 Major gastrointestinal disorders and peritoneal infections with cc
  • 373 Major gastrointestinal disorders and peritoneal infections without cc/mcc

Applicable To

  • (Acute) appendicitis with perforation NOS
  • Perforated appendix NOS
  • Ruptured appendix (with localized peritonitis) NOS

Code History

  • 2019 (effective 10/1/2018): New code
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to K35.32:

  • perforation NOS > with K35.891
  • perforation > with K35.31
  • rupture (with localized peritonitis) > peritonitis NEC K35.33
  • perforation > with K35.31
  • ruptured NOS (with localized peritonitis) > Appendicitis (pneumococcal) (retrocecal) K37
  • appendix > Perforation, perforated (nontraumatic) (of)
  • with localized peritonitis > appendix K35.32
  • cecum > Perforation, perforated (nontraumatic) (of)
  • with localized peritonitis > cecum K35.32
  • appendicitis > with or following K65.1
  • with perforation or rupture > appendicitis K35.32
  • appendix (with peritonitis) > Rupture, ruptured
  • with localized peritonitis > appendix (with peritonitis) K35.32

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