2020 ICD-10-CM Diagnosis Code K57.21

Diverticulitis of large intestine with perforation and abscess with bleeding

    2016 2017 2018 2019 2020 Billable/Specific Code
  • K57.21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Dvtrcli of lg int w perforation and abscess w bleeding
  • The 2020 edition of ICD-10-CM K57.21 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K57.21 - other international versions of ICD-10 K57.21 may differ.
The following code(s) above K57.21 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 K57.21:
  • K00-K95
    2020 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
  • K57
    ICD-10-CM Diagnosis Code K57

    Diverticular disease of intestine

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code Also
    • if applicable peritonitis K65.-
    Type 1 Excludes
    • congenital diverticulum of intestine (Q43.8)
    • Meckel's diverticulum (Q43.0)
    Type 2 Excludes
    • diverticulum of appendix (K38.2)
    Diverticular disease of intestine
  • K57.2
    ICD-10-CM Diagnosis Code K57.2

    Diverticulitis of large intestine with perforation and abscess

      2016 2017 2018 2019 2020 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-)
    Diverticulitis of large intestine with perforation and abscess
Approximate Synonyms
  • Abscess, hemorrhage and perforation due to diverticulitis of large intestine
  • Diverticulitis of cecum w hemorrhage, with abscess
  • Diverticulitis of cecum w hemorrhage, with perforation
  • Diverticulitis of cecum with hemorrhage and abscess
  • Diverticulitis of cecum with hemorrhage and perforation
  • Diverticulitis of colon with hemorrhage and perforation
  • Diverticulitis of colon with hemorrhage, abscess
  • Diverticulitis of colon with hemorrhage, perforation
  • Diverticulitis of sigmoid colon with hemorrhage and abscess
  • Diverticulitis of sigmoid colon with hemorrhage and perforation
  • Diverticulitis of sigmoid with hemorrhage, abscess
  • Diverticulitis of sigmoid with hemorrhage, perforation
ICD-10-CM K57.21 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 377 G.i. Hemorrhage with mcc
  • 378 G.i. Hemorrhage with cc
  • 379 G.i. Hemorrhage without cc/mcc

Convert K57.21 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to K57.21:
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) L02.91
    ICD-10-CM Diagnosis Code L02.91

    Cutaneous abscess, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • with
      • 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 2020 Billable/Specific Code
        • 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 2020 Billable/Specific Code
          • with
            • bleeding K57.21
  • Diverticulitis (acute) K57.92
    ICD-10-CM Diagnosis Code K57.92

    Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding

      2016 2017 2018 2019 2020 Billable/Specific Code
    • intestine K57.92
      ICD-10-CM Diagnosis Code K57.92

      Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding

        2016 2017 2018 2019 2020 Billable/Specific Code
      • large K57.32
        ICD-10-CM Diagnosis Code K57.32

        Diverticulitis of large intestine without perforation or abscess without bleeding

          2016 2017 2018 2019 2020 Billable/Specific Code
        • with
          • abscess, perforation or peritonitis K57.20
            ICD-10-CM Diagnosis Code K57.20

            Diverticulitis of large intestine with perforation and abscess without bleeding

              2016 2017 2018 2019 2020 Billable/Specific Code
            • with bleeding K57.21
  • Perforation, perforated (nontraumatic) (of)
    • diverticulum (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 2020 Billable/Specific Code
      • 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 2020 Billable/Specific Code
        • with
          • bleeding K57.21
  • 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 2020 Billable/Specific Code
    Applicable To
    • Bacterial peritonitis NOS
    • with or following
      • 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 2020 Billable/Specific Code
        • 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 2020 Billable/Specific Code
          • with
            • bleeding K57.21
  • Rupture, ruptured
    • diverticulum (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 2020 Billable/Specific Code
      • 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 2020 Billable/Specific Code
        • with
          • bleeding K57.21

ICD-10-CM Codes Adjacent To K57.21
K57.0 Diverticulitis of small intestine with perforation and abscess
K57.00 …… without bleeding
K57.01 …… with bleeding
K57.1 Diverticular disease of small intestine without perforation or abscess
K57.10 Diverticulosis of small intestine without perforation or abscess without bleeding
K57.11 Diverticulosis of small intestine without perforation or abscess with bleeding
K57.12 Diverticulitis of small intestine without perforation or abscess without bleeding
K57.13 Diverticulitis of small intestine without perforation or abscess with bleeding
K57.2 Diverticulitis of large intestine with perforation and abscess
K57.20 …… without bleeding
K57.21 …… with bleeding
K57.3 Diverticular disease of large intestine without perforation or abscess
K57.30 Diverticulosis of large intestine without perforation or abscess without bleeding
K57.31 Diverticulosis of large intestine without perforation or abscess with bleeding
K57.32 Diverticulitis of large intestine without perforation or abscess without bleeding
K57.33 Diverticulitis of large intestine without perforation or abscess with bleeding
K57.4 Diverticulitis of both small and large intestine with perforation and abscess
K57.40 …… without bleeding
K57.41 …… with bleeding
K57.5 Diverticular disease of both small and large intestine without perforation or abscess
K57.50 Diverticulosis of both small and large intestine without perforation or abscess without bleeding

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