Summary & Overview
HCPCS A4652: Microcapillary Tube Sealant
HCPCS Level II code A4652 represents a microcapillary tube sealant, a disposable supply used to secure and protect microcapillary blood or fluid samples after collection. Nationally, accurate coding of supply items like A4652 matters for laboratory billing transparency, inventory tracking, and appropriate reimbursement for outpatient and point-of-care testing services.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for use of the sealant, common sites of service where the supply is used, and the payer landscape relevant to coverage and billing practice. The publication outlines typical billing considerations for consumable supplies, common modifiers often applied to supply lines (listed separately), and how A4652 fits into service-line coding for laboratory and ambulatory diagnostic workflows.
This summary equips billing managers, laboratory directors, and revenue cycle staff with a clear description of the code, its clinical role, and the scope of payers commonly engaged in coverage decisions. Data not available in the input is noted where specific payer policies, national payment amounts, and associated ICD-10 diagnoses would normally be listed.
Billing Code Overview
HCPCS Level II code A4652 denotes microcapillary tube sealant, a consumable medical supply used to seal or cap microcapillary tubes commonly employed in laboratory sample collection and point-of-care testing. The item is a supply product intended to preserve sample integrity after collection by providing a secure seal for microcapillary tubes.
Service type: Medical supply / sealant for microcapillary tubes
Typical site of service: Laboratory settings, outpatient clinics, point-of-care testing locations, and other ambulatory care environments where microcapillary blood or fluid collection is performed.
Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves a phlebotomy or point-of-care testing encounter where small-volume blood samples are collected for hematology, chemistry, or coagulation testing. A patient undergoing capillary blood collection (for example, a pediatric patient, an adult with difficult venous access, or a patient requiring frequent glucose monitoring) has blood drawn into microcapillary tubes. After collection, a technician or medical assistant applies a microcapillary tube sealant to the open end of the capillary tube to prevent leakage, contamination, or clotting during transport to the laboratory or while preparing the specimen for analysis. The clinical workflow generally includes patient identification and consent, site preparation (warmth or cleaning), capillary puncture, collection into microcapillary tubes, immediate application of A4652 microcapillary tube sealant to the tube ends, labeling, and transport to the laboratory or placement into testing devices. Typical sites of service include hospital inpatient units, outpatient clinics, emergency departments, urgent care centers, physician offices, and ambulatory surgical centers. The service is commonly performed by licensed phlebotomists, medical laboratory technicians, nurses, and other trained clinical staff.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the professional component of a related diagnostic test or service, if applicable to bundled laboratory services. |