UB04 Admission Hour Code 09: 09:00 AM - 09:59 AM

Introduction

Admission Hour Code 09 indicates that a patient was formally admitted to the facility between the hours of 9:00 AM and 9:59 AM. This code is reported in Field 13: Admission Hour.

Usage

This code is used by institutional providers to document the specific hour of a patient's admission for inpatient, observation, or emergency department encounters. It is particularly common for scheduled elective surgeries or diagnostic procedures where the patient is required to check in during the morning shift.

Billing Impact

While the admission hour itself does not typically change the DRG assignment, it is essential for calculating the length of stay and validating the medical necessity of an overnight stay versus an outpatient observation period.