Hepatitis B Surface Antigen (HBsAg)

CPT: 87340
Infectious Disease

What This Test Measures

Active hepatitis B infection marker; positive in acute and chronic HBV.

Preparation

No fasting required

General guidelines only. Requirements vary by lab and individual. Confirm with your provider before adjusting any medications.

Turnaround Time

Varies by lab

Clinical Notes

First marker to become positive in HBV; persists in chronic infection

ICD-10 Codes

Common diagnosis codes associated with this test. Codes are assigned by your provider.

B18.1Chronic viral hepatitis B without delta-agent
Z11.59Encounter for screening for other viral diseases

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Lab Codes

Proprietary codes used by each lab for this test.

ACL Laboratories
HBAG(order)
ARUP Laboratories
0050126(order_code)
BioReference Laboratories
0106-5(order_code)
CPL
2739(order_code)
LabCorp
006510(order_code)
Mayo Clinic Labs
HBSAB/8361(order_code)
Quest Diagnostics
498(order_code)

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For informational purposes only

This page is for educational and research purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. ICD-10 and CPT codes are assigned by your healthcare provider. Always consult a qualified healthcare provider before ordering any lab test or making decisions about your health.