2017/18 ICD-10-CM Diagnosis Code K65

Peritonitis

Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • code (B95-B97
    ICD-10-CM Range B95-B97

    Bacterial and viral infectious agents

    Note
    • These categories are provided for use as supplementary or additional codes to identify the infectious agent(s) in diseases classified elsewhere.
    • B95 Streptococcus, Staphylococcus, and Enter...
    • B96 Other bacterial agents as the cause of d...
    • B97 Viral agents as the cause of diseases cl...
    ), to identify infectious agent
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K65. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • acute appendicitis with generalized peritonitis (
    ICD-10-CM Diagnosis Code K35.2

    Acute appendicitis with generalized peritonitis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Appendicitis (acute) with generalized (diffuse) peritonitis following rupture or perforation of appendix
    • Perforated appendix NOS
    • Ruptured appendix NOS
    K35.2
    )
  • aseptic peritonitis (
    ICD-10-CM Diagnosis Code T81.6

    Acute reaction to foreign substance accidentally left during a procedure

      2016 2017 2018 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • complications of foreign body accidentally left in body cavity or operation wound following procedure (T81.5-)
    T81.6
    )
  • benign paroxysmal peritonitis (
    ICD-10-CM Diagnosis Code E85.0

    Non-neuropathic heredofamilial amyloidosis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Hereditary amyloid nephropathy
    Code Also
    • associated disorders, such as:
    • autoinflammatory syndromes (M04.-)
    Type 2 Excludes
    • Transthyretin-related (ATTR) familial amyloid cardiomyopathy (E85.4)
    E85.0
    )
  • chemical peritonitis (
    ICD-10-CM Diagnosis Code T81.6

    Acute reaction to foreign substance accidentally left during a procedure

      2016 2017 2018 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • complications of foreign body accidentally left in body cavity or operation wound following procedure (T81.5-)
    T81.6
    )
  • diverticulitis of both small and large intestine with peritonitis (
    ICD-10-CM Diagnosis Code K57.4

    Diverticulitis of both small and large intestine with perforation and abscess

      2016 2017 2018 Non-Billable/Non-Specific Code
    Applicable To
    • Diverticulitis of both small and large intestine with peritonitis
    K57.4-
    )
  • diverticulitis of colon with peritonitis (
    ICD-10-CM Diagnosis Code K57.2

    Diverticulitis of large intestine with perforation and abscess

      2016 2017 2018 Non-Billable/Non-Specific Code
    Applicable To
    • Diverticulitis of colon with peritonitis
    Type 1 Excludes
    • diverticulitis of both small and large intestine with perforation and abscess (K57.4-)
    K57.2-
    )
  • diverticulitis of intestine, NOS, with peritonitis (
    ICD-10-CM Diagnosis Code K57.8

    Diverticulitis of intestine, part unspecified, with perforation and abscess

      2016 2017 2018 Non-Billable/Non-Specific Code
    Applicable To
    • Diverticulitis of intestine NOS with peritonitis
    K57.8-
    )
  • diverticulitis of small intestine with peritonitis (
    ICD-10-CM Diagnosis Code K57.0

    Diverticulitis of small intestine with perforation and abscess

      2016 2017 2018 Non-Billable/Non-Specific Code
    Applicable To
    • Diverticulitis of small intestine with peritonitis
    Type 1 Excludes
    • diverticulitis of both small and large intestine with perforation and abscess (K57.4-)
    K57.0-
    )
  • gonococcal peritonitis (
    ICD-10-CM Diagnosis Code A54.85

    Gonococcal peritonitis

      2016 2017 2018 Billable/Specific Code
    Type 1 Excludes
    • gonococcal pelviperitonitis (A54.24)
    A54.85
    )
  • neonatal peritonitis (
    ICD-10-CM Diagnosis Code P78.0

    Perinatal intestinal perforation

      2016 2017 2018 Billable/Specific Code Code on Newborn Record
    Applicable To
    • Meconium peritonitis
    P78.0-
    ICD-10-CM Diagnosis Code P78.1

    Other neonatal peritonitis

      2016 2017 2018 Billable/Specific Code Code on Newborn Record
    Applicable To
    • Neonatal peritonitis NOS
    P78.1
    )
  • pelvic peritonitis, female (
    ICD-10-CM Diagnosis Code N73.3

    Female acute pelvic peritonitis

      2016 2017 2018 Billable/Specific Code Female Dx
    N73.3-
    ICD-10-CM Diagnosis Code N73.5

    Female pelvic peritonitis, unspecified

      2016 2017 2018 Billable/Specific Code Female Dx
    N73.5
    )
  • periodic familial peritonitis (
    ICD-10-CM Diagnosis Code E85.0

    Non-neuropathic heredofamilial amyloidosis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Hereditary amyloid nephropathy
    Code Also
    • associated disorders, such as:
    • autoinflammatory syndromes (M04.-)
    Type 2 Excludes
    • Transthyretin-related (ATTR) familial amyloid cardiomyopathy (E85.4)
    E85.0
    )
  • peritonitis due to talc or other foreign substance (
    ICD-10-CM Diagnosis Code T81.6

    Acute reaction to foreign substance accidentally left during a procedure

      2016 2017 2018 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • complications of foreign body accidentally left in body cavity or operation wound following procedure (T81.5-)
    T81.6
    )
  • peritonitis in chlamydia (
    ICD-10-CM Diagnosis Code A74.81

    Chlamydial peritonitis

      2016 2017 2018 Billable/Specific Code
    A74.81
    )
  • peritonitis in diphtheria (
    ICD-10-CM Diagnosis Code A36.89

    Other diphtheritic complications

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Diphtheritic peritonitis
    A36.89
    )
  • peritonitis in syphilis (late) (
    ICD-10-CM Diagnosis Code A52.74

    Syphilis of liver and other viscera

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Late syphilitic peritonitis
    A52.74
    )
  • peritonitis in tuberculosis (
    ICD-10-CM Diagnosis Code A18.31

    Tuberculous peritonitis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Tuberculous ascites
    A18.31
    )
  • peritonitis with or following abortion or ectopic or molar pregnancy (
    ICD-10-CM Diagnosis Code O00

    Ectopic pregnancy

      2016 2017 2018 Non-Billable/Non-Specific Code
    Includes
    • ruptured ectopic pregnancy
    Use Additional
    • code from category O08 to identify any associated complication
    O00
    -
    ICD-10-CM Diagnosis Code O07

    Failed attempted termination of pregnancy

      2016 2017 2018 Non-Billable/Non-Specific Code
    Includes
    • failure of attempted induction of termination of pregnancy
    • incomplete elective abortion
    Type 1 Excludes
    • incomplete spontaneous abortion (O03.0-)
    O07
    ,
    ICD-10-CM Diagnosis Code O08.0

    Genital tract and pelvic infection following ectopic and molar pregnancy

      2016 2017 2018 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
    Applicable To
    • Endometritis following ectopic and molar pregnancy
    • Oophoritis following ectopic and molar pregnancy
    • Parametritis following ectopic and molar pregnancy
    • Pelvic peritonitis following ectopic and molar pregnancy
    • Salpingitis following ectopic and molar pregnancy
    • Salpingo-oophoritis following ectopic and molar pregnancy
    Type 1 Excludes
    • sepsis following ectopic and molar pregnancy (O08.82)
    • urinary tract infection (O08.83)
    O08.0
    )
  • peritonitis with or following appendicitis (
    ICD-10-CM Diagnosis Code K35
    • K35 Acute appendicitis
      • K35.2 Acute appendicitis with generalized peritonit...
      • K35.3 Acute appendicitis with localized peritonitis...
      • K35.8 Other and unspecified acute appendicitis
        • K35.80 Unspecified acute appendicitis
        • K35.89 Other acute appendicitis
    K35.-
    )
  • peritonitis with or following diverticular disease of intestine (
    ICD-10-CM Diagnosis Code K57
    • K57 Diverticular disease of intestine
      • K57.0 Diverticulitis of small intestine with perfor...
        • K57.00 Diverticulitis of small intestine with perfor...
        • K57.01 Diverticulitis of small intestine with perfor...
      • K57.1 Diverticular disease of small intestine witho...
        • K57.10 Diverticulosis of small intestine without per...
        • K57.11 Diverticulosis of small intestine without per...
        • K57.12 Diverticulitis of small intestine without per...
        • K57.13 Diverticulitis of small intestine without per...
      • K57.2 Diverticulitis of large intestine with perfor...
        • K57.20 Diverticulitis of large intestine with perfor...
        • K57.21 Diverticulitis of large intestine with perfor...
      • K57.3 Diverticular disease of large intestine witho...
        • K57.30 Diverticulosis of large intestine without per...
        • K57.31 Diverticulosis of large intestine without per...
        • K57.32 Diverticulitis of large intestine without per...
        • K57.33 Diverticulitis of large intestine without per...
      • K57.4 Diverticulitis of both small and large intest...
        • K57.40 Diverticulitis of both small and large intest...
        • K57.41 Diverticulitis of both small and large intest...
      • K57.5 Diverticular disease of both small and large ...
        • K57.50 Diverticulosis of both small and large intest...
        • K57.51 Diverticulosis of both small and large intest...
        • K57.52 Diverticulitis of both small and large intest...
        • K57.53 Diverticulitis of both small and large intest...
      • K57.8 Diverticulitis of intestine, part unspecified...
        • K57.80 Diverticulitis of intestine, part unspecified...
        • K57.81 Diverticulitis of intestine, part unspecified...
      • K57.9 Diverticular disease of intestine, part unspe...
        • K57.90 Diverticulosis of intestine, part unspecified...
        • K57.91 Diverticulosis of intestine, part unspecified...
        • K57.92 Diverticulitis of intestine, part unspecified...
        • K57.93 Diverticulitis of intestine, part unspecified...
    K57.-
    )
  • puerperal peritonitis (
    ICD-10-CM Diagnosis Code O85

    Puerperal sepsis

      2016 2017 2018 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
    Applicable To
    • Postpartum sepsis
    • Puerperal peritonitis
    • Puerperal pyemia
    Type 1 Excludes
    • fever of unknown origin following delivery (O86.4)
    • genital tract infection following delivery (O86.1-)
    • obstetric pyemic and septic embolism (O88.3-)
    • puerperal septic thrombophlebitis (O86.81)
    • urinary tract infection following delivery (O86.2-)
    Type 2 Excludes
    • sepsis during labor (O75.3)
    Use Additional
    • code (B95-B97), to identify infectious agent
    O85
    )
  • retroperitoneal infections (
    ICD-10-CM Diagnosis Code K68
    • K68 Disorders of retroperitoneum
      • K68.1 Retroperitoneal abscess
        • K68.11 Postprocedural retroperitoneal abscess
        • K68.12 Psoas muscle abscess
        • K68.19 Other retroperitoneal abscess
      • K68.9 Other disorders of retroperitoneum
    K68.-
    )
The following code(s) above K65 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K65:
  • K00-K95
    2018 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • 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)
    Diseases of the digestive system
Clinical Information Code History
ICD-10-CM Codes Adjacent To K65
K63.9 Disease of intestine, unspecified
K64 Hemorrhoids and perianal venous thrombosis
K64.0 First degree hemorrhoids
K64.1 Second degree hemorrhoids
K64.2 Third degree hemorrhoids
K64.3 Fourth degree hemorrhoids
K64.4 Residual hemorrhoidal skin tags
K64.5 Perianal venous thrombosis
K64.8 Other hemorrhoids
K64.9 Unspecified hemorrhoids
K65 Peritonitis
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
K66 Other disorders of peritoneum
K66.0 Peritoneal adhesions (postprocedural) (postinfection)
K66.1 Hemoperitoneum

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.