K65 is the ICD-10 code for Peritonitis. It is a three-character category divided into 3 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block K65–K67 (Diseases of peritoneum) in Chapter XI, Diseases of the digestive system.
- Code type
- Category (3 characters)
- Chapter
- XI · K00–K93
- Classification
- WHO ICD-10, 2019 version
What K65 excludes
Conditions that look similar but belong under another code.
- peritonitis:
- aseptic T81.6
- benign paroxysmal E85.0
- chemical T81.6
- due to talc or other foreign substance T81.6
- neonatal P78.0-P78.1
- pelvic, female N73.3-N73.5
- periodic familial E85.0
- puerperal O85
- with or following: abortion or ectopic or molar pregnancy O00-O07, O08.0
- with or following: appendicitis K35.-
- with or following: diverticular disease of intestine K57.-
Subcodes of K65
K65 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
K65Peritonit
DK65Bughindebetændelse
K65Vatsakalvotulehdus
K65Peritonitis
K65Péritonite
K65peritonitis
Listed through more specific codes:
- K65.1Peritoneal abscess
- K65.2Spontaneous bacterial peritonitis
- K65.3Choleperitonitis
- K65.4Sclerosing mesenteritis
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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