CPT code 96110 represents a developmental screening service typically performed during pediatric visits to evaluate a child's acquisition of age-appropriate developmental milestones. The objective of this screening is to identify potential developmental delays across various domains, including gross and fine motor skills, expressive and receptive language development, cognitive abilities, and social-emotional functioning. This code is explicitly used when a standardized, validated screening instrument is administered, scored, and documented. Examples of such standardized tools include the Ages and Stages Questionnaire (ASQ), the Modified Checklist for Autism in Toddlers (M-CHAT), the Parents' Evaluation of Developmental Status (PEDS), and the Denver Developmental Screening Test. The process begins with the provision of the screening instrument to the patient's parent or caregiver, who may complete it independently or with the assistance of the healthcare staff. After completion, the healthcare provider or trained clinical staff scores the instrument using the specific standardized rubric associated with the tool. The provider then interprets the numerical or categorical score to determine if the child is progressing normally or falls into a risk category warranting further evaluation or early intervention services. Following the scoring, the physician or qualified healthcare professional integrates these findings into the patient's medical record, ensuring that both the name of the standardized instrument and the exact score or interpretation are clearly documented. Importantly, this screening procedure is distinct from more complex neurodevelopmental testing or comprehensive behavioral assessments, which involve direct face-to-face interaction and testing by a psychologist or specialized physician. CPT 96110 is often billed alongside a preventive medicine service, utilizing a modifier 25 on the Evaluation and Management code if appropriate, to reflect the additional work of utilizing the standardized tool above and beyond the standard clinical interview and physical examination. Early identification through CPT 96110 allows for timely referral to speech therapy, occupational therapy, physical therapy, or specialized developmental pediatricians, significantly improving long-term developmental outcomes for pediatric patients.