S4021: In vitro fertilization procedure cancelled after aspiration, case rate
S4021 is a HCPCS Level II code for in vitro fertilization procedure cancelled after aspiration, case rate. It belongs to the Temporary National Codes (Non-Medicare) section. Medicare does not pay it: see the coverage note below before you bill it.
Medicare coverage: Not payable by Medicare
Medicare does not pay this code. It may still be valid for another payer, but a Medicare claim carrying it will not be reimbursed.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q4-Oct. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusI
Not valid for Medicare purposes. Medicare uses another code.
Global period: XXX
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The CMS record for S4021
- Long descriptor
- In vitro fertilization procedure cancelled after aspiration, case rate
- Short descriptor
- Ivf canc aftr aspr case rate
- Added
- January 1, 2002
- BETOS
- Z2
- Pricing indicator
- 00: Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service: CMS's own analytic grouping.
Service not separately priced by Part B, not covered, bundled into another service, or used by Part A only.
Codes adjacent to S4021
HCPCS has no hierarchy: related items simply sit next to each other in the numbering. If S4021 is not quite right, the correct code is very often within a few positions of it.
- S4011In vitro fertilization; including but not limited to identification and incubation of mature oocytes, fertilization with sperm, incubation of embryo(s), and subsequent visualization for determination of development
- S4013Complete cycle, gamete intrafallopian transfer (gift), case rate
- S4014Complete cycle, zygote intrafallopian transfer (zift), case rate
- S4015Complete in vitro fertilization cycle, not otherwise specified, case rate
- S4016Frozen in vitro fertilization cycle, case rate
- S4017Incomplete cycle, treatment cancelled prior to stimulation, case rate
- S4018Frozen embryo transfer procedure cancelled before transfer, case rate
- S4020In vitro fertilization procedure cancelled before aspiration, case rate
- S4022Assisted oocyte fertilization, case rate
- S4023Donor egg cycle, incomplete, case rate
- S4024Air polymer-type a intrauterine foam, per study dose
- S4025Donor services for in vitro fertilization (sperm or embryo), case rate
- S4026Procurement of donor sperm from sperm bank
- S4027Storage of previously frozen embryos
- S4028Microsurgical epididymal sperm aspiration (mesa)
- S4030Sperm procurement and cryopreservation services; initial visit