S4018 HCPCS Level II code: Frozen embryo transfer procedure cancelled before transfer, case rate
S4018 is the HCPCS code for “Frozen embryo transfer procedure cancelled before transfer, case rate” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
S4018Frozen embryo transfer procedure cancelled before transfer, case rate
Short description: F emb trns canc case rate
HCPCS · United States
Notes for S4018
As CMS prints them, with any note S4018 takes from the headings above it.
Note
- CMS processing note 0088: "S" CODES ARE UNIQUE TEMPORARY CODES ESTABLISHED BY BCBSA AND HIAA FOR PRIVATE PAYOR USE. THEY ARE NOT VALID NOR PAYABLE BY MEDICARE.
Medicare details
The indicators CMS publishes with S4018 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Not payable by Medicare
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Other medical items or services
- BETOS category
- Undefined codes
- Added
- Jan 1, 2002
Where S4018 sits
- 1S codesTemporary national codes (non-Medicare)
- 2Active code S4018Frozen embryo transfer procedure cancelled before transfer, case rate
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code S4018 mean?
S4018 is the HCPCS code for “Frozen embryo transfer procedure cancelled before transfer, case rate” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover S4018?
CMS lists S4018’s Medicare coverage as “Not payable by Medicare” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside S4018
All S codesS4011In vitro fertilization; including but not limited to identification and incubation of mature oocytes, fertilization with sperm, incubation of embryo(s), and subsequent…S4013Complete cycle, gamete intrafallopian transfer (gift), case rateS4014Complete cycle, zygote intrafallopian transfer (zift), case rateS4015Complete in vitro fertilization cycle, not otherwise specified, case rateS4016Frozen in vitro fertilization cycle, case rateS4017Incomplete cycle, treatment cancelled prior to stimulation, case rateS4020In vitro fertilization procedure cancelled before aspiration, case rateS4021In vitro fertilization procedure cancelled after aspiration, case rateS4022Assisted oocyte fertilization, case rateS4023Donor egg cycle, incomplete, case rateS4024Air polymer-type a intrauterine foam, per study doseS4025Donor services for in vitro fertilization (sperm or embryo), case rate