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CPT 99427: Clinical Staff Chronic Care Management, Additional 30 Minutes
CPT code 99427 denotes additional time-based chronic care management services delivered by clinical staff under the direction of a physician or qualified healthcare professional for patients with complex chronic conditions expected to persist for three months or longer and who are at substantial risk for hospitalization, exacerbation, or functional decline. Nationally, this code supports structured care coordination that can reduce acute events and align resources for high-risk patients.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an explanation of the clinical context for use of CPT code 99427, the service model and typical sites of service, and what to consider when documenting time-based, staff-delivered care. The publication outlines common billing and coding considerations for time increments, summarizes payer coverage patterns and policy updates where available, and highlights operational impacts on ambulatory care teams and care management programs.
This brief provides national-level context for clinical, administrative, and policy audiences seeking to understand where CPT code 99427 fits within chronic care management workflows and payer coverage landscapes. Data not available in the input will be noted where specific payer policies, benchmarks, or associated taxonomies are not provided.
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Billing Code Overview
CPT code 99427 describes care management and care plan services performed by clinical staff members directed by a physician or other qualified healthcare professional for a patient with a complex chronic condition expected to last at least three months and placing the patient at significant risk of hospitalization, acute exacerbation, decompensation, functional decline, or death. The code applies to each additional 30 minutes of clinical staff time beyond the first 30 minutes in a calendar month.
Service type: Clinical staff–provided chronic care management and care plan services
Typical site of service: Outpatient or ambulatory settings, including clinic-based care management and telehealth-enabled care coordination, where directed clinical staff deliver ongoing management and care plan activities for patients with complex chronic conditions.