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    v1.0.28
    OpenPayerBilling CodesOther diseases of intestinesICD-10-CM k57-diverticular-disease-of-intestine
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    ICD-10-CM Code For Diverticular Disease Of Intestine: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group K57 includes diagnoses for diverticulosis and diverticulitis of the intestine, capturing variants with complications such as bleeding, perforation, abscess, fistula, and obstruction. These ICD-10-CM diagnosis codes are used to document clinical scenarios ranging from asymptomatic diverticulosis to acute complicated diverticulitis requiring hospitalization, capturing disease severity, organ involvement, and clinical complexity relevant to this group. Accurate coding within the ICD-10-CM K57 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM K57: Diverticular Disease Of Intestine Overview

    The ICD-10-CM K57 group represents diagnoses for diverticular disease of the intestine, including diverticulosis and diverticulitis with or without bleeding and with or without perforation. These conditions affect the large intestine and sometimes the small intestine, involving outpouchings of the bowel wall and potential complications such as abscess, fistula, obstruction, or perforation. Accurate coding is important for complete clinical documentation and to support appropriate reimbursement based on disease complexity and care intensity.

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    When to Use

    Use a code from the ICD-10-CM K57 group when a patient is diagnosed with diverticulosis or diverticulitis of the intestine, including cases with documented complications like bleeding, abscess, fistula, perforation, or obstruction. Select the specific code that reflects the clinical presentation, anatomic site, and presence or absence of complications as documented in the medical record.

    ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    K57.00Diverticulitis of small intestine with perforation and abscess without bleeding
    K57.01Diverticulitis of small intestine with perforation and abscess with bleeding
    K57.10Diverticulosis of small intestine without perforation or abscess without bleeding
    K57.11Diverticulosis of small intestine without perforation or abscess with bleeding
    K57.12Diverticulitis of small intestine without perforation or abscess without bleeding
    K57.13Diverticulitis of small intestine without perforation or abscess with bleeding
    K57.20Diverticulitis of large intestine with perforation and abscess without bleeding
    K57.21Diverticulitis of large intestine with perforation and abscess with bleeding
    K57.30Diverticulosis of large intestine without perforation or abscess without bleeding
    K57.31Diverticulosis of large intestine without perforation or abscess with bleeding
    K57.32Diverticulitis of large intestine without perforation or abscess without bleeding
    K57.33Diverticulitis of large intestine without perforation or abscess with bleeding
    K57.40Diverticulitis of both small and large intestine with perforation and abscess without bleeding
    K57.41Diverticulitis of both small and large intestine with perforation and abscess with bleeding
    K57.50Diverticulosis of both small and large intestine without perforation or abscess without bleeding
    K57.51Diverticulosis of both small and large intestine without perforation or abscess with bleeding
    K57.52Diverticulitis of both small and large intestine without perforation or abscess without bleeding
    K57.53Diverticulitis of both small and large intestine without perforation or abscess with bleeding
    K57.80Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding
    K57.81Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding

    Showing 1–20 of 24

    DRG Codes

    5 rows

    DRG CodeDescription
    377Gastrointestinal Hemorrhage with MCC
    378Gastrointestinal Hemorrhage with CC
    379Gastrointestinal Hemorrhage without CC/MCC
    391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC
    392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC

    Typical Clinical Scenarios

    • An elderly patient presents to the emergency department with sudden onset of left lower quadrant abdominal pain, fever, and leukocytosis. CT abdomen shows localized colonic diverticular inflammation with a contained pericolic abscess and localized perforation without generalized peritonitis; the patient is admitted for IV antibiotics and possible percutaneous drainage. A code from this group is assigned to capture diverticulitis with localized perforation/abscess. Typical codes: K57.32, K57.33
    • A middle-aged patient with recurrent episodes of crampy lower abdominal pain and alternating constipation who is seen in primary care for evaluation; prior imaging documented diverticulosis and the clinician documents chronic symptomatic diverticular disease without acute inflammation. A chronic/ongoing diagnosis from this group is used to reflect symptomatic diverticular disease managed conservatively in the outpatient setting. Typical codes: K57.50, K57.51
    • A hospitalized patient with diverticular disease who develops acute colonic bleeding and hemodynamic instability requiring transfusion and endoscopic evaluation. The diverticular disease is coded to indicate the presence of diverticulitis with hemorrhage or diverticulosis with bleeding as a complicating condition driving inpatient care. Typical codes: K57.20, K57.21

    Related Codes

    K55-VASCULAR-DISORDERS-OF-INTESTINE

    ICD-10-CM Code For Vascular Disorders Of Intestine: Group Overview

    K56-PARALYTIC-ILEUS-AND-INTESTINAL-OBSTRUCTION

    ICD-10-CM Code For Paralytic Ileus And Intestinal Obstruction Without Hernia: Group Overview

    K58-IRRITABLE-BOWEL-SYNDROME

    ICD-10-CM Code For Irritable Bowel Syndrome: Group Overview

    K59-OTHER-FUNCTIONAL-INTESTINAL-DISORDERS

    ICD-10-CM Code For Other Functional Intestinal Disorders: Group Overview

    K60-FISSURE-AND-FISTULA-ANAL-RECTAL

    ICD-10-CM Code For Fissure And Fistula Of Anal And Rectal Regions: Group Overview

    K61-ABSCESS-OF-ANAL-AND-RECTAL-REGIONS

    ICD-10-CM Code For Abscess Of Anal And Rectal Regions: Group Overview

    K62-OTHER-DISEASES-OF-ANUS-AND-RECTUM

    ICD-10-CM Code For Other Diseases Of Anus And Rectum: Group Overview

    K63-OTHER-DISEASES-OF-INTESTINE

    ICD-10-CM Code For Other Diseases Of Intestine: Group Overview

    K64-HEMORRHOIDS-AND-PERIANAL-VENOUS-THROMBOSIS

    ICD-10-CM Code For Hemorrhoids And Perianal Venous Thrombosis: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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