K65
Non-billablePeritonitis
Peritonitis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- 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.-)
Excludes 2
Conditions not included here, but the patient may have both
- 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)
Use Additional Code
Additional codes that should follow this code
- code (B95-B97), to identify infectious agent, if known
Code Also
A second code may be required; sequencing depends on circumstances
- if applicable diverticular disease of intestine (K57.-)
Child Codes (7)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code K65?
ICD-10-CM code K65 represents "Peritonitis". It is a non-billable header code — use a more specific child code for billing purposes.
Is K65 a billable code?
No, K65 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 7 child codes under K65.
What chapter is K65 in?
K65 is in Chapter 11: Diseases of the Digestive System (codes K00-K95).
What codes cannot be used with K65?
K65 has Excludes1 notes indicating codes that cannot be used together with it, including: acute appendicitis with generalized peritonitis (K35.2-); aseptic peritonitis (T81.6); benign paroxysmal peritonitis (E85.0); and 14 more.
What are the subcategories under K65?
K65 has 7 child codes, including: K65.0 (Generalized (acute) peritonitis), K65.1 (Peritoneal abscess), K65.2 (Spontaneous bacterial peritonitis), K65.3 (Choleperitonitis), and 3 more.
Are additional codes required with K65?
Yes, when using K65 you should also code: code (B95-B97), to identify infectious agent, if known.
What are the UMLS CUIs for K65?
K65 is linked to 1 UMLS Concept Unique Identifier: C0031154. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.