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lüll Methacholine challenge testing: identifying its diagnostic role, testing, coding, and reimbursement Birnbaum S; Barreiro TJChest 2007[Jun]; 131 (6): 1932-5Methacholine challenge testing (MCT), also sometimes described as bronchoprovocation testing, is widely performed for both research and diagnostic purposes. MCT is clinically useful when the patient presents with a history of symptoms suggesting asthma, but spirometry findings are normal. Typically, MCT is performed in a pulmonary function laboratory, a clinic, or a physician's office. MCT requires time, effort, and understanding. Two standard testing regimes are identified along with proper coding and reimbursement methodologies.|*Methacholine Chloride/adverse effects[MESH]|Asthma/classification/diagnosis[MESH]|Bronchial Provocation Tests/adverse effects/*economics/*methods[MESH]|Forms and Records Control[MESH]|Humans[MESH]|Insurance, Health, Reimbursement/economics[MESH]|Sensitivity and Specificity[MESH]|Spirometry[MESH] |