• Peritonitis (adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion) K65.9
    ICD-10-CM Diagnosis Code K65.9

    Peritonitis, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Bacterial peritonitis NOS

    • acute K65.0
      (generalized)
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • aseptic T81.61
      ICD-10-CM Diagnosis Code T81.61

      Aseptic peritonitis due to foreign substance accidentally left during a procedure

        2016 2017 2018 2019 Non-Billable/Non-Specific Code
      Applicable To
      • Chemical peritonitis
    • bile, biliary K65.3
      ICD-10-CM Diagnosis Code K65.3

      Choleperitonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Peritonitis due to bile
    • chemical T81.61
      ICD-10-CM Diagnosis Code T81.61

      Aseptic peritonitis due to foreign substance accidentally left during a procedure

        2016 2017 2018 2019 Non-Billable/Non-Specific Code
      Applicable To
      • Chemical peritonitis
    • chlamydial A74.81
      ICD-10-CM Diagnosis Code A74.81

      Chlamydial peritonitis

        2016 2017 2018 2019 Billable/Specific Code
    • chronic proliferative K65.8
      ICD-10-CM Diagnosis Code K65.8

      Other peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Chronic proliferative peritonitis
      • Peritonitis due to urine
    • complicating abortion - see Abortion, by type, complicated by, pelvic peritonitis
    • congenital P78.1
      ICD-10-CM Diagnosis Code P78.1

      Other neonatal peritonitis

        2016 2017 2018 2019 Billable/Specific Code Code on Newborn Record
      Applicable To
      • Neonatal peritonitis NOS
    • diaphragmatic K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • diffuse K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • diphtheritic A36.89
      ICD-10-CM Diagnosis Code A36.89

      Other diphtheritic complications

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Diphtheritic peritonitis
    • disseminated K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • due to
      • bile K65.3
        ICD-10-CM Diagnosis Code K65.3

        Choleperitonitis

          2016 2017 2018 2019 Billable/Specific Code
        Applicable To
        • Peritonitis due to bile
      • foreign
        • body or object accidentally left during a procedure T81.599
          (instrument) (sponge) (swab)
          ICD-10-CM Diagnosis Code T81.599

          Other complications of foreign body accidentally left in body following unspecified procedure

            2016 2017 2018 2019 Non-Billable/Non-Specific Code
        • substance accidentally left during a procedure T81.61
          (chemical) (powder) (talc)
          ICD-10-CM Diagnosis Code T81.61

          Aseptic peritonitis due to foreign substance accidentally left during a procedure

            2016 2017 2018 2019 Non-Billable/Non-Specific Code
          Applicable To
          • Chemical peritonitis
      • talc T81.61
        ICD-10-CM Diagnosis Code T81.61

        Aseptic peritonitis due to foreign substance accidentally left during a procedure

          2016 2017 2018 2019 Non-Billable/Non-Specific Code
        Applicable To
        • Chemical peritonitis
      • urine K65.8
        ICD-10-CM Diagnosis Code K65.8

        Other peritonitis

          2016 2017 2018 2019 Billable/Specific Code
        Applicable To
        • Chronic proliferative peritonitis
        • Peritonitis due to urine
    • eosinophilic K65.8
      ICD-10-CM Diagnosis Code K65.8

      Other peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Chronic proliferative peritonitis
      • Peritonitis due to urine
      • acute K65.0
        ICD-10-CM Diagnosis Code K65.0

        Generalized (acute) peritonitis

          2016 2017 2018 2019 Billable/Specific Code
        Applicable To
        • Pelvic peritonitis (acute), male
        • Subphrenic peritonitis (acute)
        • Suppurative peritonitis (acute)
    • fibrocaseous A18.31
      (tuberculous)
      ICD-10-CM Diagnosis Code A18.31

      Tuberculous peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Tuberculous ascites
    • fibropurulent K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • following ectopic or molar pregnancy O08.0
      ICD-10-CM Diagnosis Code O08.0

      Genital tract and pelvic infection following ectopic and molar pregnancy

        2016 2017 2018 2019 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)
    • general K65.0
      (ized)
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • gonococcal A54.85
      ICD-10-CM Diagnosis Code A54.85

      Gonococcal peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Type 1 Excludes
      • gonococcal pelviperitonitis (A54.24)
    • meconium P78.0
      (newborn)
      ICD-10-CM Diagnosis Code P78.0

      Perinatal intestinal perforation

        2016 2017 2018 2019 Billable/Specific Code Code on Newborn Record
      Applicable To
      • Meconium peritonitis
    • neonatal P78.1
      ICD-10-CM Diagnosis Code P78.1

      Other neonatal peritonitis

        2016 2017 2018 2019 Billable/Specific Code Code on Newborn Record
      Applicable To
      • Neonatal peritonitis NOS
      • meconium P78.0
        ICD-10-CM Diagnosis Code P78.0

        Perinatal intestinal perforation

          2016 2017 2018 2019 Billable/Specific Code Code on Newborn Record
        Applicable To
        • Meconium peritonitis
    • pancreatic K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • paroxysmal, familial E85.0
      ICD-10-CM Diagnosis Code E85.0

      Non-neuropathic heredofamilial amyloidosis

        2016 2017 2018 2019 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)
      • benign E85.0
        ICD-10-CM Diagnosis Code E85.0

        Non-neuropathic heredofamilial amyloidosis

          2016 2017 2018 2019 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)
    • pelvic
      • female N73.5
        ICD-10-CM Diagnosis Code N73.5

        Female pelvic peritonitis, unspecified

          2016 2017 2018 2019 Billable/Specific Code Female Dx
        • acute N73.3
          ICD-10-CM Diagnosis Code N73.3

          Female acute pelvic peritonitis

            2016 2017 2018 2019 Billable/Specific Code Female Dx
        • chronic N73.4
          ICD-10-CM Diagnosis Code N73.4

          Female chronic pelvic peritonitis

            2016 2017 2018 2019 Billable/Specific Code Female Dx
          Type 1 Excludes
          • tuberculous pelvic (female) peritonitis (A18.17)
          • with adhesions N73.6
            ICD-10-CM Diagnosis Code N73.6

            Female pelvic peritoneal adhesions (postinfective)

              2016 2017 2018 2019 Billable/Specific Code Female Dx
            Type 2 Excludes
            • postprocedural pelvic peritoneal adhesions (N99.4)
      • male K65.0
        ICD-10-CM Diagnosis Code K65.0

        Generalized (acute) peritonitis

          2016 2017 2018 2019 Billable/Specific Code
        Applicable To
        • Pelvic peritonitis (acute), male
        • Subphrenic peritonitis (acute)
        • Suppurative peritonitis (acute)
    • periodic, familial E85.0
      ICD-10-CM Diagnosis Code E85.0

      Non-neuropathic heredofamilial amyloidosis

        2016 2017 2018 2019 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)
    • proliferative, chronic K65.8
      ICD-10-CM Diagnosis Code K65.8

      Other peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Chronic proliferative peritonitis
      • Peritonitis due to urine
    • puerperal, postpartum, childbirth O85
      ICD-10-CM Diagnosis Code O85

      Puerperal sepsis

        2016 2017 2018 2019 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
    • purulent K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • septic K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • specified NEC K65.8
      ICD-10-CM Diagnosis Code K65.8

      Other peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Chronic proliferative peritonitis
      • Peritonitis due to urine
    • spontaneous bacterial K65.2
      ICD-10-CM Diagnosis Code K65.2

      Spontaneous bacterial peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Type 1 Excludes
      • bacterial peritonitis NOS (K65.9)
    • subdiaphragmatic K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • subphrenic K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • suppurative K65.0
      ICD-10-CM Diagnosis Code K65.0

      Generalized (acute) peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Pelvic peritonitis (acute), male
      • Subphrenic peritonitis (acute)
      • Suppurative peritonitis (acute)
    • syphilitic A52.74
      ICD-10-CM Diagnosis Code A52.74

      Syphilis of liver and other viscera

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Late syphilitic peritonitis
      • congenital A50.08
        (early)
        ICD-10-CM Diagnosis Code A50.08

        Early visceral congenital syphilis

          2016 2017 2018 2019 Billable/Specific Code
    • talc T81.61
      ICD-10-CM Diagnosis Code T81.61

      Aseptic peritonitis due to foreign substance accidentally left during a procedure

        2016 2017 2018 2019 Non-Billable/Non-Specific Code
      Applicable To
      • Chemical peritonitis
    • tuberculous A18.31
      ICD-10-CM Diagnosis Code A18.31

      Tuberculous peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Tuberculous ascites
    • urine K65.8
      ICD-10-CM Diagnosis Code K65.8

      Other peritonitis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Chronic proliferative peritonitis
      • Peritonitis due to urine
    • with or following
      • abscess K65.1
        ICD-10-CM Diagnosis Code K65.1

        Peritoneal abscess

          2016 2017 2018 2019 Billable/Specific Code
        Applicable To
        • Abdominopelvic abscess
        • Abscess (of) omentum
        • Abscess (of) peritoneum
        • Mesenteric abscess
        • Retrocecal abscess
        • Subdiaphragmatic abscess
        • Subhepatic abscess
        • Subphrenic abscess
      • appendicitis
        • generalized K35.20
          - see also Appendicitis
          ICD-10-CM Diagnosis Code K35.20

          Acute appendicitis with generalized peritonitis, without abscess

            2019 - New Code Billable/Specific Code
          Applicable To
          • (Acute) appendicitis with generalized peritonitis NOS
        • localized K35.30
          - see also Appendicitis
          ICD-10-CM Diagnosis Code K35.30

          Acute appendicitis with localized peritonitis, without perforation or gangrene

            2019 - New Code Billable/Specific Code
          Applicable To
          • Acute appendicitis with localized peritonitis NOS
        • with perforation or rupture K35.32
          ICD-10-CM Diagnosis Code K35.32

          Acute appendicitis with perforation and localized peritonitis, without abscess

            2019 - New Code Billable/Specific Code
          Applicable To
          • (Acute) appendicitis with perforation NOS
          • Perforated appendix NOS
          • Ruptured appendix (with localized peritonitis) NOS
      • diverticular disease (intestine) K57.80
        ICD-10-CM Diagnosis Code K57.80

        Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding

          2016 2017 2018 2019 Billable/Specific Code
        • ectopic or molar pregnancy O08.0
          ICD-10-CM Diagnosis Code O08.0

          Genital tract and pelvic infection following ectopic and molar pregnancy

            2016 2017 2018 2019 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)
        • large intestine K57.20
          ICD-10-CM Diagnosis Code K57.20

          Diverticulitis of large intestine with perforation and abscess without bleeding

            2016 2017 2018 2019 Billable/Specific Code
          • with
            • bleeding K57.21
              ICD-10-CM Diagnosis Code K57.21

              Diverticulitis of large intestine with perforation and abscess with bleeding

                2016 2017 2018 2019 Billable/Specific Code
            • small intestine K57.40
              ICD-10-CM Diagnosis Code K57.40

              Diverticulitis of both small and large intestine with perforation and abscess without bleeding

                2016 2017 2018 2019 Billable/Specific Code
              • with bleeding K57.41
                ICD-10-CM Diagnosis Code K57.41

                Diverticulitis of both small and large intestine with perforation and abscess with bleeding

                  2016 2017 2018 2019 Billable/Specific Code
        • small intestine K57.00
          ICD-10-CM Diagnosis Code K57.00

          Diverticulitis of small intestine with perforation and abscess without bleeding

            2016 2017 2018 2019 Billable/Specific Code
          • with
            • bleeding K57.01
              ICD-10-CM Diagnosis Code K57.01

              Diverticulitis of small intestine with perforation and abscess with bleeding

                2016 2017 2018 2019 Billable/Specific Code
            • large intestine K57.40
              ICD-10-CM Diagnosis Code K57.40

              Diverticulitis of both small and large intestine with perforation and abscess without bleeding

                2016 2017 2018 2019 Billable/Specific Code
              • with bleeding K57.41
                ICD-10-CM Diagnosis Code K57.41

                Diverticulitis of both small and large intestine with perforation and abscess with bleeding

                  2016 2017 2018 2019 Billable/Specific Code
        • with bleeding K57.81
          ICD-10-CM Diagnosis Code K57.81

          Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding

            2016 2017 2018 2019 Billable/Specific Code