K59.03 Drug induced constipation

Name of the Condition

• Drug induced constipation
• Medical term: Drug induced constipation (ICD-10-CM Code: K59.03)

Summary

Drug induced constipation is a type of constipation caused by the use of certain medications. It is characterized by infrequent or difficult bowel movements resulting from the effects of drugs on gastrointestinal motility or fluid absorption.

Causes

Medications that can slow intestinal transit or reduce stool moisture, such as opioids, anticholinergics, iron supplements, calcium channel blockers, or certain antidepressants, may lead to drug induced constipation. Other drugs, including some antacids containing aluminum or calcium, can also contribute to this condition.

Risk Factors

• Use of medications known to affect bowel function
• Prolonged or high-dose medication regimens
• Concurrent use of multiple drugs with constipating effects
• Pre-existing gastrointestinal conditions that may be exacerbated by medications

Symptoms

• Fewer than three bowel movements per week
• Hard or lumpy stools
• Straining during bowel movements
• Sensation of incomplete evacuation
• Abdominal discomfort or bloating

Diagnosis

Diagnosis involves a review of the patient's medication history to identify potential causative drugs. A physical examination and assessment of bowel habits are performed. If symptoms persist after discontinuing or adjusting the suspected medication, further evaluation may include stool studies or imaging to rule out other causes.

Treatment Options

• Medication Adjustment: Discontinuing or substituting the offending drug, if possible.
• Laxatives: Short-term use of osmotic or stimulant laxatives to relieve symptoms.
• Stool Softeners: To ease passage of hard stools.
• Increased Fluid and Fiber Intake: To support regular bowel movements.

Prognosis and Follow-Up

Prognosis is generally good once the causative medication is addressed. Symptoms often resolve with discontinuation or adjustment of the drug. Follow-up may be needed to monitor bowel function and ensure the underlying condition is managed without recurrence of constipation.

Complications

Prolonged drug induced constipation can lead to fecal impaction, hemorrhoids, or anal fissures. In severe cases, it may cause bowel obstruction or diverticulitis.

Lifestyle & Prevention

• Stay hydrated by drinking adequate fluids.
• Maintain a diet high in fiber (fruits, vegetables, whole grains).
• Engage in regular physical activity to promote intestinal motility.
• Discuss potential constipating side effects with healthcare providers when starting new medications.

When to Seek Professional Help

Seek medical attention if constipation is severe, persistent, or accompanied by symptoms like rectal bleeding, unexplained weight loss, or abdominal pain. Prompt evaluation is needed if bowel movements stop entirely or if there are signs of obstruction.

Tips for Medical Coders

Document the specific medication or drug class associated with the constipation, as this supports the diagnosis of drug induced constipation (K59.03). Include details about the timing of symptom onset relative to medication use and any adjustments made to the regimen. Ensure the medical record links the constipation directly to the drug to justify the code assignment.