Summary & Overview
HCPCS G9964: Well-Child Visit with Primary Care Provider
HCPCS Level II code G9964 documents that a patient received at least one well-child visit with a primary care provider during the performance period. As a preventive-care measure, this code is used nationally to capture delivery of routine pediatric wellness services that support early identification of health issues and adherence to recommended care schedules. Tracking well-child visits has implications for quality measurement, population health management, and value-based payment programs.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the code’s clinical intent and common use cases, benchmarks and performance contexts where available, and relevant policy considerations affecting how payers recognize and report the measure. The publication also outlines service-line implications for primary care practices and pediatric clinics, typical sites of service, and areas where coding documentation influences quality reporting.
Data not available in the input for associated taxonomies, specific ICD-10 diagnoses, related codes, and detailed payer-specific billing rules. The content focuses on the code’s definition, national relevance, and the practical contexts in which primary care providers record well-child visits.
Billing Code Overview
HCPCS Level II code G9964 indicates that a patient received at least one well-child visit with a primary care provider (PCP) during the performance period. This measure documents preventive pediatric care delivered by a PCP and is typically used to track delivery of recommended well-child services.
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Service type: Preventive pediatric well-child visit
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Typical site of service: Primary care clinic or pediatric practice
Clinical & Coding Specifications
Clinical Context
A 2-year-old child attends a scheduled well-child visit with their primary care clinician (pediatrician or family medicine physician) during the measurement period. The visit includes age-appropriate preventive services: interval history, developmental and behavioral screening, physical examination, anticipatory guidance, immunization review and administration if due, and parent counseling. Vital signs, growth measurements, and assessment of nutrition and sleep are documented. If any acute concerns arise, they are addressed within the same encounter and documented separately. The electronic health record documents that the patient received at least one well-child visit during the performance period, enabling reporting under billing code G9964. Typical workflow: appointment scheduling by family, pre-visit intake forms completed, nurse rooming with height/weight/vitals, clinician encounter for preventive services, coding/billing staff assign G9964 for quality reporting, and immunizations or referrals ordered as needed.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the well-child visit required substantially greater physician work than typically required and documentation supports this. |