Infertility & REI Billing Services

Why fertility billing is its own discipline

Reproductive endocrinology and infertility (REI) billing doesn't look like the rest of OB/GYN. A single patient's journey might include insurance-covered diagnostic testing, a few IUI cycles covered at 50%, an IVF cycle covered only up to a lifetime dollar maximum, frozen embryo transfers billed as a self-pay package, and storage fees billed annually. Each piece needs to be verified, coded and billed to the right party.

Get it wrong and the consequences are painful for everyone: claims denied as non-covered after treatment is complete, patients receiving unexpected bills, and staff spending hours reconciling which portion belongs to whom. Our team brings more than eight years of women's health billing experience to this specialty, with workflows built for cycle-based care.

Benefit verification before every cycle

The single most important step in fertility billing happens before treatment starts. For each patient and each planned cycle we confirm:

• Whether the plan covers infertility diagnosis, treatment, or both
• Coverage for IUI, IVF, ICSI, preimplantation genetic testing, cryopreservation and storage
• Lifetime or annual maximums (dollar amounts or number of cycles) and how much has been used
• Whether a fertility benefit manager (carve-out vendor) administers the benefit
• Prior authorization requirements and medical criteria (age, diagnosis, duration of infertility)
• Whether the plan is fully insured (subject to state mandates) or self-funded
• Pharmacy vs. medical benefit coverage for fertility medications

The result is a clear benefit summary your financial counselors can share with the patient before the cycle starts. More about our eligibility verification service.

Common fertility CPT and HCPCS codes

Some commercial payers require bundled HCPCS S-codes instead of component CPT codes — for example S4015 for a complete IVF cycle or S4016 for a frozen embryo transfer cycle. We bill each payer in the format it requires.

Diagnosis coding for fertility

• N97.- — female infertility, specified by cause (anovulation, tubal, uterine, other)
• N46.- — male infertility
• Z31.- — encounters for procreative management, including fertility testing, assisted reproductive fertility procedure cycles (Z31.83) and fertility preservation (Z31.84)
• Underlying conditions such as PCOS (E28.2), endometriosis (N80.-) and diminished ovarian reserve, coded when they're the reason for evaluation or treatment

Diagnosis selection matters because many plans cover treatment of an underlying condition differently from infertility treatment itself.

Fertility preservation

Patients facing cancer treatment or other therapies that can affect fertility may need oocyte, embryo or sperm cryopreservation on a short timeline. Several states mandate coverage of fertility preservation for iatrogenic infertility. We verify those benefits quickly and code the encounter with the appropriate Z-codes and the underlying diagnosis.

Self-pay packages and mixed billing

Many fertility practices offer packaged self-pay pricing for IVF or frozen transfers. When part of a cycle is covered and part is self-pay, billing needs to be precise:

• Covered services billed to insurance with the correct codes and diagnosis
• Non-covered services billed to the patient under your package pricing
• Patient financial agreements that clearly separate the two
• Storage and annual fees invoiced on schedule

We keep these lines clean so your patients understand what they're paying for and your accounts reconcile.

Fertility medications

Most fertility medications are covered — when they're covered — under the pharmacy benefit and dispensed by specialty pharmacies. Some medications administered in the office may be billed under the medical benefit with HCPCS codes. We confirm which benefit applies before the cycle so patients aren't caught between two departments of the same insurer.

Who we work with

• OB/GYN practices that offer IUI and basic infertility workups
• REI practices and fertility clinics, including those with in-house embryology labs
• Practices adding fertility preservation services

We also handle the rest of your women's health billing — see global maternity billing for patients who transition to obstetric care, and revenue cycle management for full-service support.

Diagnostic workup billing

Before treatment begins, most fertility patients go through a diagnostic evaluation, and these services are more often covered by insurance than treatment itself. Getting the diagnostic phase billed correctly protects revenue even when treatment benefits are limited:

• Office E/M visits for the initial consultation and follow-ups, coded by medical decision making or time
• Transvaginal and pelvic ultrasounds (76830, 76856, 76857) for antral follicle counts and anatomy assessment
• Hysterosalpingography and sonohysterography for tubal patency and uterine cavity evaluation — for example 58340 with the imaging supervision code
• Hysteroscopy (58555, 58558) when an intrauterine lesion needs evaluation or treatment
• Laboratory testing such as ovarian reserve and hormone testing
• Semen analysis (89320–89322) for the male partner, often billed under the partner's own insurance

The diagnosis on these claims should describe the reason for evaluation. When a plan excludes "infertility treatment" but covers diagnosis of underlying conditions, accurate diagnosis coding is what determines payment.

Cycle monitoring

Monitoring ultrasounds and hormone levels during a stimulation cycle are frequent, time-sensitive services. Some payers include monitoring in a cycle case rate; others pay each ultrasound and lab separately; still others exclude monitoring entirely when the underlying treatment isn't covered. We set up the billing rules for each payer once, so monitoring visits are handled consistently instead of being decided claim by claim.

Common fertility billing problems we fix

• Treatment started before benefits were verified, leaving the patient with an unexpected balance
• Component CPT codes billed to a payer that requires S-code case rates (or vice versa)
• Partner services billed under the wrong person's insurance
• Storage fees not invoiced or not renewed
• Monitoring visits billed to plans that bundle them into the cycle
• Fertility preservation billed with an infertility diagnosis instead of the underlying medical condition and preservation Z-code

Get a free fertility billing review

Send us a WhatsApp message. We'll review a sample of recent fertility claims and benefit verifications and show you where coverage, coding or patient-balance issues are occurring — at no cost and with no forms to fill out.