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K57.9 - Diverticulosis of the Colon | ICD-10
K57.9 is the ICD-10 code for diverticulosis of the large intestine without perforation or abscess, describing small pouches in the colon wall.
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K57.9 is the ICD-10 code for diverticulosis of the large intestine without perforation or abscess, describing small pouches in the colon wall.
What Does the ICD-10 Code K57.9 Mean?
The ICD-10 code K57.9 stands for diverticulosis of the large intestine (colon) without perforation or abscess. Diverticulosis refers to the presence of multiple small, pouch-like bulges (called diverticula) in the wall of the colon. When these pouches become inflamed or infected, the condition is called diverticulitis.
Causes
The exact causes of diverticulosis are not fully understood, but key risk factors include:
- Low-fiber diet: Insufficient fiber intake increases pressure inside the colon, promoting the formation of diverticula.
- Increasing age: The elasticity of the colon wall decreases with age. Diverticulosis is common in people over 60.
- Physical inactivity: Lack of exercise can slow intestinal transit.
- Genetic predisposition: A familial tendency has been observed.
- Obesity: Excess body weight is an additional risk factor.
Symptoms
Uncomplicated diverticulosis (K57.9) is often asymptomatic and is frequently discovered incidentally during a colonoscopy. Possible symptoms include:
- Dull abdominal pain, often in the lower left abdomen
- Rectal bleeding (less common)
- Changes in bowel habits (diarrhea or constipation)
- Bloating and general discomfort
When diverticula become inflamed (diverticulitis), additional symptoms such as fever, severe pain, and abdominal tenderness may develop.
Diagnosis
Diverticulosis is typically diagnosed using the following methods:
- Colonoscopy: The gold standard for direct visualization of diverticula
- CT scan of the abdomen: Especially useful when complications such as diverticulitis are suspected
- Abdominal ultrasound: Used as an initial assessment tool
- Contrast enema X-ray: Less commonly used today
Treatment
Asymptomatic Diverticulosis
If no inflammation is present, no specific treatment is usually required. However, dietary changes can help prevent complications:
- Increasing fiber intake (vegetables, whole grains, legumes)
- Adequate fluid intake (at least 1.5–2 liters of water per day)
- Regular physical activity
Diverticulitis (Inflammation)
When diverticula become inflamed, treatment with antibiotics may be required, or in severe cases, hospitalization. In rare cases involving serious complications such as perforation or abscess, surgery may be necessary.
Prognosis
The prognosis for uncomplicated diverticulosis (K57.9) is generally good. Most patients remain symptom-free. A high-fiber diet and a healthy lifestyle can significantly reduce the risk of complications.
References
- Leifeld L. et al. - S2k Guideline Diverticular Disease/Diverticulitis, AWMF Registration Number 021-020, 2022. Available at: www.awmf.org
- World Gastroenterology Organisation (WGO) - Global Guidelines: Diverticular Disease, 2007. Available at: www.worldgastroenterology.org
- Strate LL, Morris AM. - Epidemiology, Pathophysiology, and Treatment of Diverticulitis. Gastroenterology. 2019;156(5):1282-1298. doi:10.1053/j.gastro.2018.12.033
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