G0500 - Moderate sedation during endoscopy procedure for patients 5 years and older (first 15 minutes)

Healthcare Common Procedure Coding System

Last updated: 11/28/2025

What is a HCPCS Code?

HCPCS (Healthcare Common Procedure Coding System) codes are used to identify medical procedures, supplies, and services for billing purposes. These codes help standardize how healthcare services are reported and billed across different providers and insurance companies.

Detailed Description

This code represents moderate sedation services provided during a gastrointestinal endoscopic procedure (such as colonoscopy or upper endoscopy) for patients who are 5 years of age or older. The sedation is administered by the same doctor performing the endoscopy and requires a trained observer to monitor the patient's consciousness level and vital signs. This code covers the initial 15 minutes of sedation time during the procedure. Moderate sedation helps patients remain comfortable and relaxed while still being able to respond to verbal commands.

Additional Information

This is an add-on service to the main endoscopy procedure. Additional time beyond 15 minutes may be billed separately with code 99153. The sedation allows patients to be comfortable during the procedure while maintaining the ability to respond to instructions.

Category

Anesthesia/Sedation Services

Medical Specialty

Gastroenterology

Expected Costs

Your actual cost will depend on your insurance coverage, provider location, and specific circumstances.

What's Required Before This

  • Gastrointestinal endoscopic procedure scheduled
  • Patient age 5 years or older
  • Trained independent observer available for monitoring

What to Expect After

  • Post-sedation monitoring until fully alert
  • Recovery observation period
  • Discharge instructions regarding activities after sedation

Why Understanding This Code Matters

On Your Medical Bill

This code appears on your medical bills to identify the specific service, procedure, drug, or medical diagnosis you received. Understanding what it means helps you verify you're being charged correctly and know what to expect.

For Your Health

Knowing what this code represents helps you understand your treatment plan, ask better questions during appointments, and track your healthcare journey more effectively.

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