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CPT 95070: Bronchial Challenge Test, Technical Component
CPT code 95070 represents the technical component of a bronchial challenge test (histamine or methacholine challenge) used to evaluate airway hyperresponsiveness and assist in diagnosing asthma. As a technical-only code, 95070 covers the performance, monitoring, and data acquisition aspects of the provocation test rather than physician interpretation. This code is relevant nationally for hospital outpatient departments, pulmonary function laboratories, and ambulatory diagnostic clinics that perform pulmonary provocation testing.
Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the test, typical sites of service, and an explanation of the technical-versus-professional component distinction. The publication covers billing benchmarks and payer policy considerations where available, common modifier usage scenarios, and implications for coding workflows in pulmonary diagnostic services.
The document is intended to help coding professionals, revenue cycle staff, and clinical administrators understand the purpose of CPT code 95070, how it fits into the diagnostic pathway for suspected asthma, and what topics to review when aligning billing practices with payer policies. Data not available in the input is noted where applicable.
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Billing Code Overview
CPT code 95070 describes the technical component of a bronchial challenge test, also known as a histamine challenge test or methacholine challenge test, used to assist in the diagnosis of asthma. The service involves administration of an inhaled test substance in a controlled sequence to assess airway hyperresponsiveness.
Service type: Pulmonary function provocation testing (technical component only)
Typical site of service: Hospital outpatient departments, pulmonary function laboratories, or ambulatory care clinics where pulmonary diagnostic testing is performed.