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HomeICD-10 CodesK65
ICD-10-CM
Non-billable

K65

Classification
Category:Diseases of the digestive system
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Coding Guidance
K65 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail.
Excludes 1
K35.2
acute appendicitis with generalized peritonitis
T81.6
aseptic peritonitis
E85.0
benign paroxysmal peritonitis
T81.6
chemical peritonitis
A54.85
gonococcal peritonitis
P78.0
neonatal peritonitis
P78.1
neonatal peritonitis
N73.3
pelvic peritonitis, female
N73.5
pelvic peritonitis, female
E85.0
periodic familial peritonitis
T81.6
peritonitis due to talc or other foreign substance
A74.81
peritonitis in chlamydia
A36.89
peritonitis in diphtheria
A52.74
peritonitis in syphilis (late)
A18.31
peritonitis in tuberculosis
O00-O07
peritonitis with or following abortion or ectopic or molar pregnancy
O08.0
peritonitis with or following abortion or ectopic or molar pregnancy
K35
peritonitis with or following appendicitis
O85
puerperal peritonitis
K68
retroperitoneal infections
Excludes 2
Use Additional Code
code to identify infectious agent, if known

More Specific Codes

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

External Resources

2025 ICD-10 guidelines from CMS.gov