K65.4

Fat necrosis of peritoneum (Idiopathic) sclerosing mesenteric fibrosis Mesenteric lipodystrophy Mesenteric panniculitis Retractile mesenteritis

acute appendicitis with generalized peritonitis (K35.2-) aseptic peritonitis (T81.6) benign paroxysmal peritonitis (E85.0) chemical peritonitis (T81.6) gonococcal peritonitis (A54.85) neonatal peritonitis (P78.0-P78.1) pelvic peritonitis, female (N73.3-N73.5) periodic familial peritonitis (E85.0) peritonitis due to talc or other foreign substance (T81.6) peritonitis in chlamydia (A74.81) peritonitis in diphtheria (A36.89) peritonitis in syphilis (late) (A52.74) peritonitis in tuberculosis (A18.31) peritonitis with or following abortion or ectopic or molar pregnancy (O00-O07, O08.0) peritonitis with or following appendicitis (K35.-) puerperal peritonitis (O85) retroperitoneal infections (K68.-)

code (B95-B97), to identify infectious agent, if known

if applicable diverticular disease of intestine (K57.-)

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)