K65

Peritonitis

Non-billable header

K65 is a non-billable header code. Use one of the more specific codes below.

Excludes1

Not coded here — never report together with this 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.-)

Excludes2

Not included here — may be reported together when both conditions exist.

  • 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

Add a code to identify the following, if applicable.

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

Code also

An additional code may be needed.

  • if applicable diverticular disease of intestine (K57.-)

More specific codes K65

  • K65.0Generalized (acute) peritonitisBillable
  • K65.1Peritoneal abscessBillable
  • K65.2Spontaneous bacterial peritonitisBillable
  • K65.3CholeperitonitisBillable
  • K65.4Sclerosing mesenteritisBillable
  • K65.8Other peritonitisBillable
  • K65.9Peritonitis, unspecifiedBillable

Related codes

  • K6ADiseases of the pelvis, not elsewhere classifiedHeader
  • K66Other disorders of peritoneumHeader
  • K67Disorders of peritoneum in infectious diseases classified elsewhereBillable
  • K68Disorders of retroperitoneumHeader

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