K65 — Peritonitis
Part of Chapter 11: Diseases of the digestive system , block Diseases of peritoneum, retroperitoneum and pelvis (K65-K6A) .
Official Notes
Use Additional Code
code (B95-B97), to identify infectious agent, if known
Code Also
if applicable diverticular disease of intestine ( K57 .-)
Excludes1
acute appendicitis with generalized peritonitis ( K35.2- )
Excludes1
aseptic peritonitis ( T81.6 )
Excludes1
benign paroxysmal peritonitis ( E85.0 )
Excludes1
chemical peritonitis ( T81.6 )
Excludes1
gonococcal peritonitis ( A54.85 )
Excludes1
neonatal peritonitis (P78.0-P78.1)
Excludes1
pelvic peritonitis, female (N73.3-N73.5)
Excludes1
periodic familial peritonitis ( E85.0 )
Excludes1
peritonitis due to talc or other foreign substance ( T81.6 )
Excludes1
peritonitis in chlamydia ( A74.81 )
Excludes1
peritonitis in diphtheria ( A36.89 )
Excludes1
peritonitis in syphilis (late) ( A52.74 )
Excludes1
peritonitis in tuberculosis ( A18.31 )
Excludes1
peritonitis with or following abortion or ectopic or molar pregnancy (O00-O07, O08.0 )
Excludes1
peritonitis with or following appendicitis ( K35 .-)
Excludes1
puerperal peritonitis ( O85 )
Excludes1
retroperitoneal infections ( K68 .-)
Child Codes
Referenced By
Official notes on these codes cite K65.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS