1. ICD-10-CM Codes
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2. K00-K95
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3. K35-K38
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4. K35-
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5. 2023 ICD-10-CM Diagnosis Code K35.32

2023 ICD-10-CM Diagnosis Code K35.32

Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess

2019 - New Code 2020 2021 2022 2023 - Revised Code Billable/Specific Code

• K35.32 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• Short description: Ac appendicitis w perf, loc peritonitis, & gangr, w/o abscs
• ICD-10-CM K35.32 is a revised 2023 ICD-10-CM code that 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.

• 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

• 2019 (effective 10/1/2018): New code
• 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): Revised code
  • New description: Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess
  • 2022 description: Acute appendicitis with perforation and localized peritonitis, without abscess

• Appendicitis (pneumococcal) (retrocecal) K37
  ICD-10-CM Diagnosis Code K37

  Unspecified appendicitis

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Type 1 Excludes

  • unspecified appendicitis with peritonitis (K35.2-, K35.3-)
  • with
    • peritonitis NEC K35.33
      ICD-10-CM Diagnosis Code K35.33

      Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess

      2019 - New Code 2020 2021 2022 2023 - Revised Code Billable/Specific Code

      Applicable To

      • (Acute) appendicitis with (peritoneal) abscess NOS
      • Ruptured appendix with localized peritonitis and abscess
      • localized K35.30
        ICD-10-CM Diagnosis Code K35.30

        Acute appendicitis with localized peritonitis, without perforation or gangrene

        2019 - New Code 2020 2021 2022 2023 Billable/Specific Code

        Applicable To

        • Acute appendicitis with localized peritonitis NOS
        • with
          • perforation K35.32
      • rupture K35.32 (with localized peritonitis)
    • perforation NOS K35.32
  • acute (catarrhal) (fulminating) (obstructive) (retrocecal) (suppurative) K35.80
    ICD-10-CM Diagnosis Code K35.80

    Unspecified acute appendicitis

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Acute appendicitis NOS
    • Acute appendicitis without (localized) (generalized) peritonitis
    • with
      • peritonitis NEC K35.33
        ICD-10-CM Diagnosis Code K35.33

        Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess

        2019 - New Code 2020 2021 2022 2023 - Revised Code Billable/Specific Code

        Applicable To

        • (Acute) appendicitis with (peritoneal) abscess NOS
        • Ruptured appendix with localized peritonitis and abscess
        • localized K35.30
          ICD-10-CM Diagnosis Code K35.30

          Acute appendicitis with localized peritonitis, without perforation or gangrene

          2019 - New Code 2020 2021 2022 2023 Billable/Specific Code

          Applicable To

          • Acute appendicitis with localized peritonitis NOS
          • with
            • perforation K35.32
  • ruptured NOS K35.32 (with localized peritonitis)
• Perforation, perforated (nontraumatic) (of)
  • appendix K35.32
    • with localized peritonitis K35.32
  • cecum K35.32
    • with localized peritonitis K35.32
• Peritonitis (adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion) K65.9
  ICD-10-CM Diagnosis Code K65.9

  Peritonitis, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Applicable To

  • Bacterial peritonitis NOS
  • with or following
    • appendicitis
      • with perforation or rupture K35.32
• Rupture, ruptured
  • appendix (with peritonitis) K35.32 - see also Appendicitis
    • with localized peritonitis K35.32 - see also Appendicitis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.