Summary & Overview
HCPCS S3655: Antisperm Antibodies Test (Immunobead)
HCPCS Level II code S3655 identifies the antisperm antibodies test performed using the immunobead method, a laboratory diagnostic assay used in infertility evaluation. This code is relevant nationally for reproductive medicine clinics, fertility centers, and outpatient laboratories that manage couples with suspected immunologic causes of infertility. Recognition of S3655 supports appropriate lab billing, clinical documentation, and payer claim adjudication.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what the code represents, typical sites of service, and clinical context for use. The publication outlines what to expect from payer coverage perspectives, commonly reported modifiers, and where this test fits in diagnostic workflows. It also provides benchmark-oriented content such as utilization and reimbursement considerations where available, and highlights any known coding or billing nuances.
This national-level summary is intended for billing managers, laboratory directors, clinicians involved in fertility care, and policy analysts who need a clear reference to HCPCS Level II code S3655 and its clinical and billing context.
Billing Code Overview
HCPCS Level II code S3655 describes an antisperm antibodies test (immunobead). This laboratory service evaluates the presence of antisperm antibodies that may affect fertility by using the immunobead technique.
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Service type: Laboratory diagnostic test
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Typical site of service: Clinical laboratory or outpatient laboratory facility
Clinical & Coding Specifications
Clinical Context
A 33-year-old female presents to a reproductive endocrinology clinic after 12 months of unprotected intercourse without conception. Her partner provides a semen sample for fertility evaluation. The laboratory is asked to perform an antisperm antibody test using the immunobead technique (S3655) to detect sperm-bound antibodies that may impair motility or fertilization. The clinical workflow: the andrology lab receives the fresh semen specimen, documents collection time and patient identifiers, performs a standard semen analysis, and, if indicated by abnormal motility or history of suspected immunologic infertility, performs the immunobead antisperm antibody assay. Results are reported to the ordering reproductive endocrinologist or urologist; positive immunobead binding patterns (e.g., head, midpiece, tail) are correlated with clinical history to guide counseling and assisted reproduction planning. Typical site of service: outpatient hospital laboratory, freestanding clinical laboratory, or fertility clinic laboratory.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the professional interpretation portion if split billing applies. |
59 |