K65Peritonitis
ICD-10-CM category (non-billable header) code — part of Diseases of peritoneum, retroperitoneum and pelvis (K65-K6A)
Coding Notes
Excludes1 (never code both together)
- 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.-)
Use Additional Code
- code (B95-B97), to identify infectious agent, if known
Code Also
- if applicable diverticular disease of intestine (K57.-)
Subcategories (7)
- K65.0 Generalized (acute) peritonitis
- K65.1 Peritoneal abscess
- K65.2 Spontaneous bacterial peritonitis
- K65.3 Choleperitonitis
- K65.4 Sclerosing mesenteritis
- K65.8 Other peritonitis
- K65.9 Peritonitis, unspecified