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2025 ICD-10-CM code E84

Cystic fibrosis

Code E84 should be used as the primary diagnosis for encounters where cystic fibrosis is the main reason for the visit. Any related conditions or complications, such as respiratory infections, should be coded as secondary diagnoses. It is important to document the specific CFTR gene mutations identified in the patient.

Medical necessity for CF treatment is established by the diagnosis of cystic fibrosis, confirmed through diagnostic testing. Treatment is medically necessary to manage the symptoms, prevent complications like lung infections and malnutrition, and improve the patient's quality of life. Documentation of the severity of the disease and the rationale for specific treatments is crucial.

Diagnosis and management of CF is complex, requiring a multidisciplinary approach involving pulmonologists, gastroenterologists, geneticists, dietitians, respiratory therapists, and other healthcare professionals. Physicians are responsible for diagnosing the condition through sweat tests, genetic tests, and clinical evaluation. They prescribe medications to manage infections, improve lung function, and aid digestion. Ongoing monitoring and follow-up care are essential.

IMPORTANT:Code also exocrine pancreatic insufficiency (K86.81)

In simple words: Cystic fibrosis (CF) is a genetic disease that makes your body produce thick, sticky mucus. This mucus can clog up your lungs, making it hard to breathe and causing lung infections.It also affects your digestive system, making it difficult to absorb nutrients from food.CF can affect other organs as well, like the liver, sinuses, and reproductive organs.

Cystic fibrosis (CF) is a genetic disorder characterized by the buildup of thick mucus, primarily affecting the lungs, pancreas, liver, intestines, sinuses, and sex organs.It is inherited in an autosomal recessive manner, meaning both parents must carry a defective gene for a child to inherit the disease. This mucus buildup leads to blockages and infections in various organ systems. The most common CFTR gene mutation is ΔF508.

Example 1: A newborn infant fails a cystic fibrosis screening test and subsequently is diagnosed with CF via sweat test and genetic testing, showing the common ΔF508 mutation. The infant begins treatment to manage mucus buildup and prevent infections., A teenager with CF experiences recurrent lung infections, difficulty breathing, and poor weight gain despite a good appetite. They receive antibiotic treatment, airway clearance therapy, and nutritional support., An adult with CF develops severe lung disease and is considered for a lung transplant. They manage their symptoms with medication and therapies but require increasing levels of medical care.

Documentation should include patient history, family history of CF, symptoms (e.g., respiratory issues, digestive problems), results of diagnostic tests (e.g., sweat test, genetic testing), imaging studies (e.g., chest X-rays, CT scans), pulmonary function tests, and details of treatment and management strategies.

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