Summary & Overview
HCPCS G8776: Serum Creatinine Test Not Performed
HCPCS Level II code G8776 denotes that a serum creatinine test was not performed and no reason was recorded. This code is used to document missing lab data in clinical and administrative records, which can affect quality reporting, care coordination, and claims adjudication at a national level. Clear documentation of why a key laboratory test was not completed is important for patient safety, quality measures, and appropriate billing workflows.
Key payers included in this overview are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code's clinical meaning and its implications for laboratory service lines, typical sites of service, and reporting. The publication outlines where G8776 fits in quality measurement and claims documentation, highlights common administrative impacts, and indicates where input data is not available.
This summary provides a practical reference for coding specialists, billing teams, and clinical administrators seeking to understand how the absence of a serum creatinine test is recorded and why that record matters for national reporting and payer communications. Data not available in the input is noted where relevant.
Billing Code Overview
HCPCS Level II code G8776 indicates serum creatinine test not performed, reason not given. This code documents the absence of a serum creatinine laboratory test when no reason for omission is recorded.
-
Service type: Laboratory diagnostic service (serum creatinine testing not completed)
-
Typical site of service: Clinical laboratory or outpatient laboratory setting where serum creatinine testing would normally be ordered
Clinical & Coding Specifications
Clinical Context
A typical outpatient primary care visit for a patient with chronic kidney disease (CKD) stage 3 who is due for routine laboratory monitoring. The clinician orders a serum creatinine to calculate estimated glomerular filtration rate (eGFR) as part of CKD surveillance and medication safety review. At phlebotomy, the patient declines blood draw or there is an inability to obtain a specimen (vein collapse, repeated failed sticks) and no reason is documented on the lab requisition. The clinic submits billing indicating that the serum creatinine test was not performed and the reason was not given, using billing code G8776. Workflow steps include: clinician order placed, attempt to collect sample by nursing/phlebotomy, repeated attempts documented in the chart when present, test not completed, and administrative coding/billing staff assign G8776 to indicate test not performed without a documented reason.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
24 | Unrelated evaluation and management service by the same physician during a postoperative period | Use when an E/M occurs unrelated to a prior procedure during a global period; rarely applicable to G8776 unless billed alongside such an E/M. |