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Official Description

Moderate sedation services (other than those services described by codes 00100-01999) provided by the same physician or other qualified health care professional performing the diagnostic or therapeutic service that the sedation supports, requiring the presence of an independent trained observer to assist in the monitoring of the patient's level of consciousness and physiological status; each additional 15 minutes intra-service time (List separately in addition to code for primary service)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

Moderate sedation services, as defined by CPT® Code 99145, are specialized medical services provided by the same physician or qualified healthcare professional who is conducting a diagnostic or therapeutic procedure that necessitates sedation. This service is characterized by the requirement of an independent trained observer who assists in monitoring the patient's level of consciousness and physiological status throughout the procedure. The process begins with a thorough patient assessment, which is crucial for determining the appropriate sedation level and ensuring patient safety. An intravenous line is typically inserted to facilitate the administration of fluids and sedative agents as needed. The administration of the sedative agent is carefully managed to maintain the patient under moderate sedation, allowing for a balance between sedation and responsiveness. During the procedure, vital signs such as oxygen saturation, heart rate, and blood pressure are continuously monitored to ensure the patient's safety and well-being. After the procedure is completed, the physician or qualified healthcare professional remains vigilant in monitoring the patient until they have sufficiently recovered from the effects of sedation. Only then can the patient be safely handed over to nursing staff for ongoing care. It is important to note that for patients younger than five years old, CPT® Code 99143 is used for the first 30 minutes of moderate sedation, while CPT® Code 99144 is applicable for patients aged five years or older for the same duration. CPT® Code 99145 is specifically designated for billing each additional 15 minutes of intra-service time for patients of any age, ensuring that the complexity and duration of sedation services are accurately captured in the medical coding process.

© Copyright 2026 Coding Ahead. All rights reserved.

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