Summary & Overview
CPT 89356: Thawing of Cryopreserved Oocytes
CPT code 89356 represents the laboratory thawing of individual aliquots of cryopreserved oocytes (egg cells). This code captures a distinct laboratory step in assisted reproductive technology workflows, where careful thawing is essential to oocyte viability and subsequent procedures such as in vitro fertilization. Nationally, accurate coding of this service is important for clarity in billing, clinical workflow tracking, and measurement of utilization in fertility care.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The analysis addresses how this laboratory thawing service is coded and billed across major national payers, noting common payer coverage considerations and the role of this code in ART service lines.
Readers will learn the clinical context for 89356, typical sites where the service is performed, and the aspects of billing and documentation that commonly accompany thawing of cryopreserved oocytes. The publication summarizes benchmark considerations, payer coverage patterns, and relevant policy and billing clarifications where available. Data not available in the input is noted as such for any absent elements such as detailed payer-specific rules, associated taxonomies, ICD-10 diagnoses, or related codes.
Billing Code Overview
CPT code 89356 describes the laboratory service in which a lab analyst performs the thawing of each aliquot, or sample, of a female patient’s cryopreserved oocytes (egg cells) that the lab has stored for later use. The procedure focuses on careful temperature-controlled thawing of frozen oocytes to prepare them for subsequent laboratory handling or assisted reproductive procedures.
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Service type: Laboratory thawing of cryopreserved oocytes
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Typical site of service: Fertility clinic laboratory or assisted reproduction laboratory
Clinical & Coding Specifications
Clinical Context
A 34-year-old woman with a history of planned fertility preservation returns to the assisted reproductive technology (ART) clinic to have previously cryopreserved mature oocytes thawed for use in an in vitro fertilization cycle. The lab receives a request from the reproductive endocrinologist after counseling and consent are completed. On the scheduled date the embryology laboratory technician documents identity verification, retrieves the correct cryovial aliquot from long-term storage, and performs controlled warming and stepwise dilution of cryoprotectants to minimize osmotic shock. Thawed oocytes are assessed for survival and then either inseminated by intracytoplasmic sperm injection (ICSI) or prepared for conventional insemination depending on sperm quality. The embryology report records number of oocytes thawed, number surviving, and any abnormalities. Typical site of service is an outpatient fertility clinic or specialized reproductive laboratory within a hospital-affiliated fertility center. Patient scenario variants include thawing for immediate IVF attempt, thawing for oocyte donation, or thawing for fertility preservation after prior gonadotoxic therapy.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default/No modifier | Use when no specific modifier applies to the service |
22 |