A medical coder writes in a patient’s insurance claim that the patient has pneumoconiosis. Which most likely caused the disease?

Pneumoconiosis is a lung disease caused by breathing in dust particles over a long period, usually in an occupational setting. Working in a hay field can expose someone to organic dust, including dust from hay. Office work and viral or bacterial infections are not the likely cause described here, so the best answer is working in a hay field.

AI-written and checked against the verified answer.