Summary & Overview
HCPCS G9851: One or Less ED Visits in Last 30 Days of Life
HCPCS Level II code G9851 documents that a patient had one or fewer emergency department visits in the last 30 days of life. As an end-of-life utilization measure, this code helps quantify acute care use during a highly resource-intensive period and is relevant for quality reporting, care coordination, and value-based payment arrangements. Nationally, tracking ED visits near the end of life informs efforts to align care with patient goals and to monitor acute care utilization patterns.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what G9851 represents, the clinical context for its use, and the typical site of service. The publication outlines where this code fits in measurement and reporting frameworks, highlights common modifiers when present in claims data, and summarizes implications for billing workflows and quality programs.
This analysis provides benchmarks and policy context relevant to national payers and provider organizations, explains reporting considerations, and describes how the measure integrates with end-of-life care quality assessments. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code G9851 indicates that a patient had one or less emergency department visits in the last 30 days of life. This code documents a measure of end-of-life care utilization and is used to capture a specific clinical outcome related to emergency department use near the end of life.
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Service type: End-of-life utilization measure
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Typical site of service: Emergency Department / Acute Care Setting
Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves a hospice-enrolled adult with a terminal illness (for example, end-stage metastatic cancer or advanced heart failure) receiving end-of-life care at home or in an inpatient hospice facility. The hospice interdisciplinary team documents utilization of emergency services during the final 30 days of life to support quality metrics and performance reporting. For this billing code, the patient had one or fewer visits to a hospital emergency department during the last 30 days before death. Clinical workflow: the hospice nurse documents all acute care encounters in the medical record, the case manager confirms ED visit counts from hospital records or health information exchange, the medical director validates the terminal prognosis and dates of service, and the hospice billing/coding staff submits the HCPCS Level II code G9851 on appropriate claims or quality submissions to indicate the metric of one or fewer ED visits in the last 30 days of life. Supporting documentation includes encounter notes, hospital ED records, date of death, and interdisciplinary team meeting notes that reference goals of care and symptom management that likely avoided frequent ED use.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Rarely applicable; use if additional documentation supports substantially greater work related to reporting quality metric data when payer allows modifier on quality-related submissions. |