1. ICD-10-CM Codes
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2. K00-K95
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3. K65-K68
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4. K65-
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5. 2023 ICD-10-CM Diagnosis Code K65.0

2023 ICD-10-CM Diagnosis Code K65.0

Generalized (acute) peritonitis

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

• K65.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2023 edition of ICD-10-CM K65.0 became effective on October 1, 2022.
• This is the American ICD-10-CM version of K65.0 - other international versions of ICD-10 K65.0 may differ.

• Acute bacterial peritonitis
• Acute generalized peritonitis
• Acute peritonitis
• Acute suppurative peritonitis
• Male pelvic peritonitis
• Peritoneal dialysis-associated peritonitis
• Peritonitis after surgery
• Peritonitis due to peritoneal dialysis
• Peritonitis, pelvic, male
• Peritonitis, subphrenic
• Postoperative peritonitis
• Subphrenic peritonitis

• 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
• 791 Prematurity with major problems
• 793 Full term neonate with major problems

Convert K65.0 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 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

• Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) L03.90
  ICD-10-CM Diagnosis Code L03.90

  Cellulitis, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • pelvis, pelvic (chronic)
    • male K65.0
• 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
  • eosinophilic K65.8
    ICD-10-CM Diagnosis Code K65.8

    Other peritonitis

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

    Applicable To

    • Chronic proliferative peritonitis
    • Peritonitis due to urine
    • acute K65.0
  • pelvic
    • male K65.0
  • acute K65.0 (generalized)
  • diaphragmatic K65.0
  • diffuse K65.0
  • disseminated K65.0
  • fibropurulent K65.0
  • general K65.0 (ized)
  • pancreatic K65.0
  • purulent K65.0
  • septic K65.0
  • subdiaphragmatic K65.0
  • subphrenic K65.0
  • suppurative K65.0
• Rupture, ruptured
  • cecum (with peritonitis) K65.0
• Suppuration, suppurative - see also condition
  • pelvis, pelvic
    • male K65.0

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