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K57.5 – Diverticulitis of the Large Intestine | ICD-10
K57.5 is an ICD-10 diagnosis code for diverticulitis of the large intestine without perforation or abscess, without bleeding.
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K57.5 is an ICD-10 diagnosis code for diverticulitis of the large intestine without perforation or abscess, without bleeding.
What Does the ICD-10 Code K57.5 Mean?
The diagnosis code K57.5 is part of the International Classification of Diseases (ICD-10) and stands for diverticulitis of the large intestine without perforation or abscess, without bleeding. It is used by physicians and healthcare facilities to document and bill for this specific condition of the colon.
What Is Diverticulitis?
Diverticulitis is an inflammation of diverticula – small, pouch-like protrusions that can form in the wall of the large intestine (colon). When these pouches are present but not inflamed, the condition is called diverticulosis. When they become inflamed or infected, the result is diverticulitis.
Causes
The exact causes of diverticulum formation are not entirely understood. Contributing risk factors include:
- Low-fiber diet: Insufficient dietary fiber leads to hard stools and increased pressure within the colon.
- Age: The prevalence of diverticula increases with age.
- Physical inactivity: Lack of exercise can reduce bowel motility.
- Genetic predisposition: A familial tendency has been observed.
- Obesity: Being overweight is considered a risk factor.
Symptoms
Typical symptoms of diverticulitis coded as K57.5 include:
- Pain in the lower left abdomen (most common location)
- Fever and elevated inflammatory markers in the blood
- Changes in bowel habits (constipation or diarrhea)
- Nausea and vomiting
- Tenderness of the abdomen on palpation
Unlike more severe forms (e.g., K57.4), the K57.5 classification specifies that there is no perforation (bowel rupture) or abscess, and no bleeding is reported.
Diagnosis
Diverticulitis is typically confirmed through the following assessments:
- Clinical examination: Physical palpation and localized tenderness
- Blood tests: Elevated inflammatory markers (CRP, leukocytes)
- CT scan of the abdomen: Gold standard for assessing the extent of inflammation and ruling out complications
- Ultrasound: Often used as the initial imaging method
Treatment
Treatment depends on severity. For uncomplicated cases classified as K57.5, the following approaches are standard:
- Dietary modification: Temporary low-fiber or liquid diet to rest the bowel
- Antibiotic therapy: Oral or intravenous depending on severity (e.g., amoxicillin-clavulanate or ciprofloxacin combined with metronidazole)
- Pain management: Appropriate analgesics to relieve discomfort
- Rest: Mild cases can often be managed on an outpatient basis
- Hospitalization: Required for severe symptoms or high-risk patients
Surgery is generally not required for uncomplicated diverticulitis (K57.5), but may be considered in cases of frequent recurrence.
ICD-10 Classification and Related Codes
The code K57.5 belongs to the group K57 – Diverticular disease of the intestine. Related codes include:
- K57.0: Diverticulitis of small intestine without perforation or abscess, without bleeding
- K57.2: Diverticulitis of small intestine with perforation and abscess, without bleeding
- K57.3: Diverticular disease of small intestine, unspecified
- K57.4: Diverticulitis of large intestine with perforation and abscess, without bleeding
- K57.5: Diverticulitis of large intestine without perforation or abscess, without bleeding
- K57.9: Diverticular disease of intestine, unspecified, without bleeding
References
- World Health Organization (WHO): International Statistical Classification of Diseases and Related Health Problems, 10th Revision (ICD-10). Geneva: WHO, 2019. Available at: www.who.int/classifications/icd
- Stollman N, Smalley W, Hirano I; AGA Institute Clinical Guidelines Committee: American Gastroenterological Association Institute Guideline on the Management of Acute Diverticulitis. Gastroenterology, 2015; 149(7): 1944–1949.
- Feingold D et al.: Practice parameters for the treatment of sigmoid diverticulitis. Diseases of the Colon & Rectum, 2014; 57(3): 284–294.
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