S Codes — Mandate Payers

S4011

Complete IVF Cycle (S Code — Mandate Payers)

Bundled case-rate code for a complete IVF cycle, with or without ICSI — used by fertility mandate payers and fertility benefit managers (FBMs) to track cycle utilization against benefit limits. S4011 represents a complete cycle including egg retrieval and embryo transfer.

Billing Notes

S codes have no direct reimbursement value — they are cycle utilization tracking codes required by specific payers. Missing S codes result in claim rejections (not denials) requiring resubmission. Aetna, certain BCBS plans, and FBMs commonly require S codes.

Diagnosis Codes

N97.x (infertility), Z31.61 (ART encounter)

Common Denial Reasons

  • S code missing — claim rejected (not denied) for resubmission
  • Wrong S code — S4011 vs S4015 vs S4025 selection error
  • S code submitted to payer that does not require them

Payer Notes

S codes are submitted alongside CPT codes, not as replacements. Always verify which S codes the specific payer requires before submitting. S4011 is for a complete IVF cycle; S4015 adds embryo transfer to S4011.

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