CPT code 99494 denotes an additional 30-minute unit of psychiatric collaborative care management (CoCM) delivered when a patient receiving behavioral health treatment requires regular psychiatric interspecialty consultation due to lack of clinical improvement. It functions as an add-on to the initial CoCM codes 99492 or 99493, permitting reporting for incremental time spent on psychiatric consultation and care coordination during the same calendar month. Nationally, this code supports integrated behavioral health models by enabling billing for sustained psychiatric involvement beyond base CoCM time thresholds. Key payers examined include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare and Medicare. Readers will find an overview of the code’s clinical role in CoCM, typical sites of service and service type, payer coverage considerations, and practical billing context such as common modifier usage and where this code fits relative to primary CoCM codes. The publication provides benchmarks and policy context relevant to adoption of CoCM billing, highlights documentation and time-tracking implications for additional units, and summarizes how payers commonly position add-on psychiatric care management time in reimbursement and prior authorization policies. Data not available in the input are noted where applicable.