G0378 - Hourly billing for hospital observation services

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 is used by hospitals to bill for observation services on an hourly basis. Hospital observation is a type of outpatient service where you are monitored in the hospital for a specific medical condition or after a procedure, but you are not formally admitted as an inpatient. The hospital uses this code to charge for each hour you spend under observation care, which includes nursing supervision, monitoring of your condition, and medical oversight by healthcare staff.

Additional Information

This is a billing code used per hour of observation time. Observation status is different from inpatient admission - you remain an outpatient even while being observed in the hospital. The total cost depends on the number of hours spent in observation.

Category

Hospital Outpatient Services

Medical Specialty

Hospital Medicine

Expected Costs

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

What's Required Before This

  • Medical condition requiring observation
  • Physician order for observation status

What to Expect After

  • Follow-up with primary care physician or specialist as directed
  • Monitoring of condition that required observation

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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