G0378 HCPCS Level II code: Hospital observation service, per hour

G0378 is the HCPCS code for “Hospital observation service, per hour” in CMS’s October 2026 release, in effect from Oct 1, 2026.

Official description

G0378

Hospital observation service, per hour

Short description: Hospital observation per hr

HCPCS · United States

Notes for G0378

As CMS prints them, with any note G0378 takes from the headings above it.

Note

CMS processing note 0107: PAYMENT IS FOR HOSPITAL OUTPATIENT ONLY. NOT PAYABLE UNDER THE PHYSICIAN FEE SCHEDULE; IN ACCORDANCE WITH FR DATE 8/9/2002 (HOPPS), PAGE 52105.

Medicare details

The indicators CMS publishes with G0378 in its October 2026 file. They describe Medicare’s handling, not another payer’s.

Medicare coverage: Special coverage instructions apply
Medicare pricing: Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
Type of service: Medical care
BETOS category: Hospital visit - initial
Added: Jan 1, 2006

Where G0378 sits

1G codesProcedures and professional services
2Active code G0378Hospital observation service, per hour

Source and release

Data release: HCPCS Level II · October 2026
Effective date: Oct 1, 2026
Publisher: CMS

This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See G0378 in the CMS source

Frequently asked questions

What does HCPCS code G0378 mean?

G0378 is the HCPCS code for “Hospital observation service, per hour” in CMS’s HCPCS Level II October 2026 release.

Does Medicare cover G0378?

CMS lists G0378’s Medicare coverage as “Special coverage instructions apply” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.

Which HCPCS Level II release does this page use?

It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

All G codes