Other peritonitis
Diseases of the Digestive System·Peritonitis·subcategory·FY 2027
Peritoneal Disorders: Your peritoneum is the tissue that lines your abdominal wall and covers most of the organs in your abdomen. A liquid, peritoneal fluid, lubricates the surface of this tissue.
Read more about peritoneal disorders on MedlinePlus · Source: MedlinePlus, National Library of Medicine
Also indexed as: Capsulitis, hepatic; Cecitis, with perforation, peritonitis, or rupture; Perihepatitis; Peritonitis, chronic proliferative; Peritonitis, due to, urine; Peritonitis, eosinophilic; Peritonitis, proliferative, chronic; Peritonitis, specified NEC; Peritonitis, urine; Saponification; Serositis; Serositis, peritoneal
Instructional notes
Includes: conditions that are coded here
- Chronic proliferative peritonitis
- Peritonitis due to urine
Also applies, from K65: Peritonitis
These notes sit on K65 and apply to every code under it, including K65.8.
Excludes1: not coded here, use a different code
- 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 also: add a code for this too, order depends on the encounter
- if applicable diverticular disease of intestine (K57.-)
Use additional code: add a second code for this, listed after this one
- code (B95-B97), to identify infectious agent, if known
Where K65.8 sits
- K65-K6A Diseases of peritoneum, retroperitoneum and pelvis (K65-K6A)
- K65 Peritonitis
- K65.8 Other peritonitis
MS-DRGs
As the principal diagnosis, this code groups to these MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 371 Major Gastrointestinal Disorders and Peritoneal Infections with MCC
- DRG 372 Major Gastrointestinal Disorders and Peritoneal Infections with CC
- DRG 373 Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC
- DRG 791 Prematurity with Major Problems
- DRG 793 Full Term Neonate with Major Problems
ICD-9-CM equivalent
Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).
- 567.89 Other specified peritonitis (approximate)