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Code deleted. Use 99151, 99152, or 99153. See Guidelines below for more information.

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 2025 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 2025 Coding Ahead. All rights reserved.

1. Indications

The indications for moderate sedation services provided under CPT® Code 99145 include situations where a patient requires sedation during a diagnostic or therapeutic procedure. These procedures may involve various medical interventions that necessitate the patient to be in a state of moderate sedation to ensure comfort and cooperation. The following conditions may warrant the use of moderate sedation:

  • Diagnostic Procedures Procedures such as endoscopies, colonoscopies, or other imaging studies that may cause discomfort or anxiety to the patient.
  • Therapeutic Procedures Interventions that require the patient to remain still and relaxed, such as certain surgical procedures or minimally invasive techniques.
  • Patient Anxiety Situations where patients exhibit significant anxiety or fear regarding the procedure, making sedation necessary for successful completion.

2. Procedure

The procedure for administering moderate sedation services under CPT® Code 99145 involves several critical steps to ensure patient safety and comfort. Each step is essential for the effective management of sedation during the diagnostic or therapeutic service.

  • Step 1: Patient Assessment A comprehensive assessment of the patient is conducted prior to the procedure. This includes reviewing the patient's medical history, current medications, and any allergies to ensure that the sedation plan is tailored to the individual's needs.
  • Step 2: Intravenous Line Insertion An intravenous (IV) line is inserted to facilitate the administration of sedative agents and fluids. This step is crucial for ensuring that the sedation can be managed effectively throughout the procedure.
  • Step 3: Administration of Sedative Agent A sedative agent is administered through the IV line. The dosage and type of sedative are determined based on the patient's assessment and the requirements of the procedure. The goal is to achieve a state of moderate sedation where the patient is relaxed but still able to respond to verbal commands.
  • Step 4: Monitoring Continuous monitoring of the patient's vital signs, including oxygen saturation, heart rate, and blood pressure, is performed throughout the procedure. This monitoring is essential to ensure the patient's safety and to detect any adverse reactions to the sedation.
  • Step 5: Post-Procedure Monitoring After the procedure is completed, the physician or qualified healthcare professional continues to monitor the patient until they have recovered from the effects of sedation. This includes assessing the patient's level of consciousness and ensuring that they are stable before transferring them to nursing staff for ongoing care.

3. Post-Procedure

Post-procedure care following moderate sedation services involves careful monitoring of the patient as they recover from sedation. The healthcare professional must ensure that the patient is alert and stable before they can be safely handed over to nursing staff. This includes checking vital signs and assessing the patient's responsiveness. The patient may experience residual effects of sedation, such as drowsiness or confusion, which should be taken into account during the recovery phase. It is also important to provide the patient and their caregivers with instructions regarding post-sedation care, including any restrictions on activities, dietary recommendations, and signs of potential complications that should prompt immediate medical attention. The overall goal is to ensure a safe and smooth transition from the sedation state back to normal functioning.

Short Descr MOD SEDAT PHYS/QHP EA 15 MIN
Medium Descr MODERATE SEDATJ SAME PHYS/QHP EACH ADDL 15 MIN
Long Descr 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 therapeuti
Status Code Carriers Price the Code
Global Days ZZZ - Code Related to Another Service
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 9 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Items and Services Packaged into APC Rates
Type of Service (TOS) 7 - Anesthesia
Berenson-Eggers TOS (BETOS) P6C - Minor procedures - other (Medicare fee schedule)
MUE Not applicable/unspecified.
CCS Clinical Classification 232 - Anesthesia
Date
Action
Notes
2016-12-31 Deleted Code deleted. Use 99151, 99152, or 99153. See Guidelines below for more information.
2013-01-01 Changed Description Changed
2006-01-01 Added First appearance in code book in 2006.
Code
Description