Fertility billing is cycle-based: a single IUI or IVF cycle generates a sequence of clinical, laboratory and procedural services over several weeks. Knowing which code describes each step — and how payers want them reported — is the foundation of clean fertility billing. This reference walks through an IUI cycle and an IVF cycle step by step.
IUI cycle coding
| Step | Typical code(s) |
|---|---|
| Consultation / planning visit | Office E/M (99202–99215) |
| Baseline and monitoring ultrasound | 76830 (transvaginal) or 76857 (pelvic, limited), per documentation |
| Hormone labs | Lab codes (if performed in-house) |
| Sperm washing | 58323 |
| Intrauterine insemination | 58322 |
| Intracervical insemination (less common) | 58321 |
Ovulation-induction medications are usually covered — if at all — under the pharmacy benefit.
IVF cycle coding
Stimulation and monitoring
Office visits, transvaginal ultrasounds and hormone levels during stimulation, coded per encounter — or included in a cycle case rate, depending on the payer.
Oocyte retrieval
| Service | Code |
|---|---|
| Follicle puncture for oocyte retrieval, any method | 58970 |
| Ultrasound guidance for aspiration of ova | 76948 |
| Anesthesia | Anesthesia codes, billed by the anesthesia provider |
Embryology laboratory
| Service | Code |
|---|---|
| Oocyte identification from follicular fluid | 89254 |
| Culture of oocyte(s)/embryo(s), less than 4 days | 89250 |
| Culture with co-culture | 89251 |
| Insemination of oocytes (conventional) | 89268 |
| Assisted oocyte fertilization, microtechnique (ICSI), ≤10 oocytes / >10 oocytes | 89280 / 89281 |
| Extended culture, 4–7 days | 89272 |
| Assisted embryo hatching | 89253 |
| Biopsy for preimplantation genetic testing, ≤5 embryos / >5 embryos | 89290 / 89291 |
| Preparation of embryo for transfer | 89255 |
| Sperm isolation (simple / complex) | 89260 / 89261 |
Transfer
| Service | Code |
|---|---|
| Embryo transfer, intrauterine | 58974 |
| Gamete, zygote or embryo intrafallopian transfer (rare) | 58976 |
Cryopreservation, storage and thawing
| Service | Code |
|---|---|
| Cryopreservation — embryo(s) | 89258 |
| Cryopreservation — sperm | 89259 |
| Cryopreservation — mature oocyte(s) | 89337 |
| Storage — embryo(s), per year | 89342 |
| Storage — sperm/semen, per year | 89343 |
| Storage — reproductive tissue, per year | 89344 |
| Storage — oocyte(s), per year | 89346 |
| Thawing — embryo(s) | 89352 |
| Thawing — sperm/semen | 89353 |
| Thawing — reproductive tissue | 89354 |
| Thawing — oocytes | 89356 |
S-codes and case rates
Some commercial payers and fertility benefit managers require HCPCS S-codes that bundle a cycle into a case rate instead of component CPT codes. Examples include S4011 (in vitro fertilization procedure), S4015 (complete IVF cycle, case rate) and S4016 (frozen IVF cycle, case rate), among others. Medicare doesn't recognize S-codes, and payers that use them each define what's included. Bill component codes or S-codes exactly as each payer specifies — never both for the same services.
Where coverage limits interact with coding
- Diagnostic vs. treatment coverage. Many plans cover infertility testing but exclude treatment. Diagnostic services must be coded as diagnostic, with the reason for evaluation.
- Lifetime maximums. Cycle counts or dollar limits mean benefits must be checked before each cycle.
- Partner services. Semen analysis and sperm processing may belong on the partner's insurance.
- Storage. Annual storage fees are frequently non-covered and billed to the patient.
- Mandates. State mandates apply to fully insured plans, not self-funded plans.
See infertility & REI billing for benefit verification.
Diagnosis coding matters too
N97.-— female infertility, by causeN46.-— male infertilityZ31.-— encounters for procreative management (includingZ31.83for an assisted reproductive fertility procedure cycle andZ31.84for fertility preservation)- Underlying conditions (
E28.2PCOS,N80.-endometriosis, tubal factors) when they're the reason for evaluation or treatment
Common IUI/IVF billing errors
- Billing component codes to a payer that requires S-code case rates (or the reverse)
- Missing
76948ultrasound guidance with58970 - Billing ICSI with the wrong tier
- Storage billed per cycle instead of per year
- Partner services on the wrong policy
- Treatment started before benefits were verified
Frozen embryo transfer cycles
Frozen embryo transfer (FET) cycles are now a large share of IVF activity, and they're coded differently from fresh cycles:
| Step | Typical code(s) |
|---|---|
| Endometrial preparation monitoring | Office E/M, transvaginal ultrasound, hormone labs |
| Thawing of cryopreserved embryo(s) | 89352 |
| Assisted hatching, if performed | 89253 |
| Preparation of embryo for transfer | 89255 |
| Embryo transfer | 58974 |
Payers that use case rates may require S4016 (frozen IVF cycle, case rate) instead of component codes. Storage fees (89342) continue annually until embryos are used, donated or discarded — and are frequently patient responsibility.
Fertility preservation cycles
Oocyte or embryo cryopreservation before cancer treatment follows the IVF retrieval and lab steps above, ending with cryopreservation (89337 for oocytes, 89258 for embryos) instead of transfer. Use Z31.84 (encounter for fertility preservation procedure) with the underlying condition, and check state mandates for iatrogenic infertility coverage — several states require it for fully insured plans.
Documentation tips
- Record the number of oocytes retrieved and inseminated (ICSI tiers depend on count)
- Record the number of embryos biopsied (PGT tiers depend on count)
- Document culture duration (less than 4 days vs. extended culture)
- Note which partner each service relates to
Get help with fertility billing
Our infertility & REI billing service handles benefit verification, cycle coding, case rates and self-pay balances. Send us a WhatsApp message for a free review of your fertility claims.
CPT® is a registered trademark of the American Medical Association. Descriptors are summarized; consult the current codebook.
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Frequently asked questions
What is the CPT code for IUI?
Intrauterine insemination is CPT 58322. Sperm washing for insemination is 58323.
What is CPT 89254?
Oocyte identification from follicular fluid — the embryology lab step of identifying eggs in the fluid aspirated at retrieval.
What is the CPT code for embryo transfer?
Intrauterine embryo transfer is CPT 58974. Preparation of the embryo for transfer is 89255.
What code is used for thawing frozen embryos?
Thawing of cryopreserved embryos is 89352. Thawing of oocytes is 89356, and sperm 89353.
Is monitoring ultrasound billed separately during an IVF cycle?
It depends on the payer. Some pay each monitoring ultrasound and lab separately with the appropriate diagnosis; others include monitoring in a cycle case rate; and plans that exclude fertility treatment may exclude monitoring too. Verify before the cycle starts.
Who bills anesthesia for oocyte retrieval?
The anesthesia provider bills anesthesia services separately with anesthesia codes. The fertility practice bills the retrieval (58970) and ultrasound guidance (76948).
How are partner services billed?
Semen analysis, sperm processing and sperm cryopreservation relate to the male partner and are often billed under his insurance, using his diagnosis codes. Check both partners' benefits.
Are fertility medications billed by the practice?
Usually not. Most fertility medications are covered, if at all, under the pharmacy benefit and dispensed by specialty pharmacies. Some office-administered drugs may be billed under the medical benefit.
Disclaimer:This article is for general educational purposes and reflects coding rules and payer policies as we understand them on the date shown. Always confirm against the current CPT and ICD-10-CM code sets and your payers' published policies.
