ICD-10-CM Billable Code

K52.831

Collagenous colitis

Clinical Classification Guidelines

Medical Intelligence & Overview

Collagenous colitis is a type of inflammatory bowel disease characterized by chronic inflammation of the colon. It is a form of microscopic colitis, which means that the inflammation is only visible under a microscope during a biopsy. This condition primarily affects the lining of the colon, leading to persistent or intermittent diarrhea and other gastrointestinal symptoms. Although the exact cause remains unclear, collagenous colitis is considered an autoimmune-related disorder that can significantly impact quality of life if left untreated.

Causes & Symptoms

Clinical Causes: Autoimmune reactions where the body's immune system mistakenly attacks the colon tissue. Genetic predisposition, as a family history may increase the risk. Use of certain medications, such as nonsteroidal anti-inflammatory drugs (NSAIDs), proton pump inhibitors, and selective serotonin reuptake inhibitors (SSRIs). Exposure to smoking, which has been associated with increased incidence. Environmental factors that trigger immune responses, although these are not well understood.

Key Symptoms: Chronic or recurrent diarrhea, often watery and non-bloody Abdominal pain or cramping Unintentional weight loss Fatigue or weakness due to dehydration and nutrient malabsorption Nausea Sometimes, urgency to have a bowel movement Occasional bloating or gas

Diagnostic & Treatment

Diagnosis Path: Diagnosing collagenous colitis involves a combination of medical history review, physical examination, and laboratory tests. Key diagnostic steps include: - **Colonoscopy**: Typically shows a normal-appearing colon but may reveal subtle inflammation. - **Biopsy**: Tissue samples taken during colonoscopy reveal characteristic features under a microscope, including increased collagen layer beneath the lining and inflammatory cell infiltration. - **Laboratory tests**: Stool samples may be tested to rule out infections. - **Imaging studies**: Not usually necessary but can be used to exclude other conditions.

Treatment Protocols: Managing collagenous colitis aims to reduce symptoms and induce remission. Treatments include: - **Medications**: - **Anti-diarrheal agents** to control diarrhea, such as loperamide. - **Budesonide**: A corticosteroid effective in reducing inflammation with fewer systemic side effects. - **Aminosalicylates**: Might be used to decrease inflammation. - **Immunosuppressants or biologics**: Considered in resistant cases. - **Dietary adjustments**: Identifying and avoiding food triggers to lessen symptoms. - **Lifestyle modifications**: Staying hydrated and managing stress. - **Monitoring and follow-up**: Regular follow-up to assess treatment response and manage relapses.

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

Clinical Advice & FAQs

Billing Guidance

Is K52.831 a billable ICD-10 code?
Yes, K52.831 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report K52.831?
Clinical documentation must specify the nature of Collagenous colitis and any associated comorbidities for accurate reporting.

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