CPT code 94012 represents a pediatric pulmonary function test that measures forced expiratory flow after bronchodilation in infants and children up to age 2. This specialized diagnostic procedure evaluates airway function, identifies lung dysfunction and disease, and assesses response to therapeutic interventions. As a narrowly targeted pediatric test, it matters nationally for ensuring appropriate diagnosis and management of early-life respiratory disorders, for informing quality measures in pediatric pulmonology, and for aligning coverage policies across major payers.

Key payers addressed in this publication include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, an outline of typical sites of care, and a summary of common billing considerations tied to pediatric pulmonary function testing. The report identifies typical modifiers used in billing (where provided), specifies that clinical use is for infants and toddlers up to age 2, and notes where input data are not available.

This publication equips clinicians, billing staff, and policy analysts with clear, actionable information on what CPT code 94012 represents, how it is used clinically, and which national payers are commonly involved in coverage and reimbursement discussions. Data not available in the input are explicitly noted where applicable.