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HCPCS Level II S4017: Incomplete ART Cycle, Cancelled Prior to Stimulation

HCPCS Level II code S4017 denotes an incomplete assisted reproductive technology (ART) cycle where treatment was cancelled before ovarian stimulation, billed as a case rate. Nationally, this code captures episodes where planned fertility procedures are abandoned prior to medication-controlled stimulation, which has implications for billing continuity, patient cost-sharing, and program tracking across payers. Common payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will learn what S4017 represents clinically and operationally, how it is applied across typical fertility clinic settings, and which payers use or recognize the code. The publication summarizes available benchmarks and reimbursement context where available, highlights policy and coverage considerations relevant to incomplete cycles, and provides clinical context about when cancellation prior to stimulation typically occurs. It also outlines common questions that billing and compliance teams encounter when processing case-rate charges for aborted ART cycles. Data not available in the input is noted where applicable.

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Billing Code Overview

HCPCS Level II code S4017 represents an incomplete cycle, treatment cancelled prior to stimulation, case rate. The code is used to report a planned treatment cycle that was terminated before ovarian stimulation began, resulting in an incomplete assisted reproductive technology (ART) cycle and a case-rate billing event.

Service Type: Assisted reproductive technology cycle — incomplete/cancelled prior to stimulation

Typical Site of Service: Fertility clinic or outpatient reproductive endocrinology center

Data not available in the input.

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HCPCS Level II S4017: Incomplete ART Cycle, Cancelled Prior to Stimulation

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Get alerted when payer policies referencing S4017 are released or updated.

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Billing Code Overview

Service Type: Assisted reproductive technology cycle — incomplete/cancelled prior to stimulation

Typical Site of Service: Fertility clinic or outpatient reproductive endocrinology center

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A patient undergoing assisted reproductive technology (ART) presents for an in-vitro fertilization (IVF) cycle. Baseline evaluation and counselling were completed and ovarian stimulation medications were prescribed. Prior to initiation of gonadotropin injections or early in the stimulation phase, the treatment cycle is cancelled due to one of several reasons: inadequate ovarian response on baseline ultrasound and labs, newly discovered medical contraindication (for example, uncontrolled hypertension), acute illness, patient decision to defer treatment, or administrative insurance/financial barriers. The clinical workflow includes clinic intake, pre-stimulation counseling, baseline labs and pelvic ultrasound, scheduling for stimulation, and cancellation documentation. The billing for this event uses the case-rate HCPCS Level II code S4017 — "Incomplete cycle, treatment cancelled prior to stimulation, case rate" — to represent a cancelled IVF cycle before active stimulation. Typical site of service is a fertility clinic or outpatient reproductive endocrinology practice. The typical patient scenario is a reproductive-age individual or couple who have completed initial cycle planning but whose cycle is stopped prior to ovarian stimulation for medical, clinical, or patient-choice reasons. Documentation should include the reason for cancellation, timing (prior to stimulation), communications with the patient, and any medications or services already provided that may be billed separately if appropriate.

Coding Specifications

Modifier	Description	When to Use
`23`	Unusual anesthesia	Use if unexpected, medically necessary anesthesia was provided for an associated procedure in conjunction with cancellation prior to stimulation (rare).
`47`	Anesthesia by surgeon	Use if the surgeon/an REI provided anesthesia services themselves for an associated intervention before cycle cancellation.
`51`	Multiple procedures	Use when billing multiple distinct services on the same date of service in addition to the cancelled cycle case rate.
`52`	Reduced services	Use when the service performed was partially reduced (for example, limited pre-cycle services) prior to cancellation.
`53`	Discontinued procedure	Use to indicate the stimulation cycle was started but discontinued (cancelled) before full initiation of stimulation — aligns with an incomplete cycle.
`59`	Distinct procedural service	Use when a separate, distinct service was performed the same day and must be identified as unrelated to the cancelled cycle.
`62`	Two surgeons	Use when two qualified surgeons/physicians are required and billed for an associated procedure before cancellation.
`76`	Repeat procedure by same physician	Use when a previously attempted stimulation was repeated by the same physician within the global period and then cancelled again prior to stimulation.
`78`	Return to OR for procedure following initial procedure	Use if the patient required a return to procedure suite for an unplanned intervention preceding the cancellation.
`91`	Repeat clinical diagnostic laboratory test	Use when a lab test was repeated (e.g., baseline labs repeated) prior to stimulation and associated with the cancelled cycle.
`99`	Multiple modifiers	Administrative use to indicate multiple informational modifiers not listed elsewhere when payer requires it for reporting.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery	Use when advanced practice clinician provided assistant services for an associated procedure prior to cycle cancellation.
`GC`	Service performed in part by a resident under the direction of a teaching physician	Use when residents participated in pre-procedure services prior to cancellation.
`Q5`	Service furnished under an outpatient hospital or ambulatory surgical center (ASC) provider agreement	Use when the cancelled cycle services were furnished in an ASC setting under an agreement.

Taxonomy Code	Specialty	Notes
`233K00000X`	Reproductive Endocrinology and Infertility (REI)	Primary specialty managing IVF cycles and cancellations.
`2084P0800X`	Obstetrics & Gynecology	Common provider specialty involved in fertility care and cycle planning.
`363A00000X`	Clinical Laboratory Director	Labs and hormonal testing utilized in pre-stimulation assessment.
`363L00000X`	Clinical Laboratory Testing/Processing	Laboratory services performing baseline testing prior to stimulation.
`367S00000X`	Nurse Practitioner	Advanced practice clinicians who manage cycle coordination and patient counseling.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`N97.0`	Female infertility associated with anovulation	Common indication for IVF planning; poor response or medical findings may lead to cancellation prior to stimulation.
`N97.1`	Female infertility associated with tubal factor	Tubal factor infertility is a frequent cause of infertility and part of the pre-cycle evaluation leading to IVF scheduling.
`N97.9`	Female infertility, unspecified	General infertility diagnosis under which an IVF cycle may be planned and subsequently cancelled.
`E78.5`	Hyperlipidemia, unspecified	Medical comorbidity that may be a new contraindication discovered prior to stimulation prompting cancellation.
`I10`	Essential (primary) hypertension	Uncontrolled hypertension discovered in pre-stimulation assessment may contraindicate cycle stimulation and lead to cancellation.
`O98.5`	Infections complicating pregnancy, unspecified	While pregnancy-specific, acute infections or acute medical conditions in reproductive-age patients can necessitate postponement or cancellation prior to stimulation.
`Z31.83`	Encounter for assisted reproductive fertility procedure cycle, canceled before start of stimulation	Specific code indicating cancellation of an ART cycle prior to stimulation; directly relevant to `S4017`.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`58970`	Laparoscopy, surgical; with fulguration of oviducts (any method)	Occasionally performed in infertility workup prior to IVF planning; not part of a cancelled stimulation but may be a prior related procedure in the patient's history.
`58120`	Endometrial biopsy, without dilation and curettage	Performed during infertility evaluation prior to or between cycles; may be billed separately from a cancelled stimulation.
`76830`	Transvaginal ultrasound, non-obstetric	Baseline pelvic ultrasound commonly performed before initiation of stimulation; frequently performed in the pre-stimulation visit that precedes cancellation.
`80053`	Comprehensive metabolic panel (CMP)	Example lab panel obtained during pre-stimulation assessment; may be repeated or billed separately if done prior to cancellation.
`83970`	Follicle stimulating hormone (FSH) assay	Endocrine testing commonly obtained in ART evaluation prior to stimulation and relevant to decisions to cancel a cycle.
`89250`	Semen analysis; presence and motility of sperm counts	Male partner testing commonly performed during infertility workup and may be present in the patient record when a cycle is cancelled.

HCPCS Level II S2152: Solid Organ Transplantation Global Care

HCPCS-LEVEL-II-S2266-INDUCED-ABORTION-29-TO-31-WEEKS

HCPCS Level II S2266: Induced Abortion, 29 to 31 Weeks

HCPCS-LEVEL-II-S3630-EOSINOPHIL-COUNT-BLOOD-DIRECT

HCPCS Level II S3630: Eosinophil Count, Blood, Direct

HCPCS-LEVEL-II-S8055-ULTRASOUND-GUIDANCE-MULTIFETAL-REDUCTION-TC

HCPCS Level II S8055: Ultrasound Guidance for Multifetal Pregnancy Reduction, Technical Component

HCPCS-LEVEL-II-S8940-EQUESTRIAN-HIPPOTHERAPY-PER-SESSION

HCPCS Level II S8940: Equestrian/Hippotherapy, Per Session

HCPCS-LEVEL-II-S9024-PARANASAL-SINUS-ULTRASOUND

HCPCS Level II S9024: Paranasal Sinus Ultrasound

HCPCS-LEVEL-II-S9366-HOME-TPN-1-2L-PER-DAY-HOME-INFUSION

HCPCS Level II S9366: Home TPN, 1–2 L/day, Per Diem

HCPCS-LEVEL-II-S9446-GROUP-PATIENT-EDUCATION-NON-PHYSICIAN

HCPCS Level II S9446: Group Patient Education by Non-Physician Provider

HCPCS-LEVEL-II-S9451-EXERCISE-CLASS-NON-PHYSICIAN-SESSION

HCPCS Level II S9451: Exercise Classes by Non-Physician Provider, Per Session

HCPCS-LEVEL-II-S9476-VESTIBULAR-REHABILITATION-PROGRAM-NON-PHYSICIAN-PER-DIEM

HCPCS Level II S9476: Vestibular Rehabilitation Program, Non-Physician, Per Diem

Showing 1–10 of 532

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`23`	Unusual anesthesia	Use if unexpected, medically necessary anesthesia was provided for an associated procedure in conjunction with cancellation prior to stimulation (rare).
`47`	Anesthesia by surgeon	Use if the surgeon/an REI provided anesthesia services themselves for an associated intervention before cycle cancellation.
`51`	Multiple procedures	Use when billing multiple distinct services on the same date of service in addition to the cancelled cycle case rate.
`52`	Reduced services	Use when the service performed was partially reduced (for example, limited pre-cycle services) prior to cancellation.
`53`	Discontinued procedure	Use to indicate the stimulation cycle was started but discontinued (cancelled) before full initiation of stimulation — aligns with an incomplete cycle.
`59`	Distinct procedural service	Use when a separate, distinct service was performed the same day and must be identified as unrelated to the cancelled cycle.
`62`	Two surgeons	Use when two qualified surgeons/physicians are required and billed for an associated procedure before cancellation.
`76`	Repeat procedure by same physician	Use when a previously attempted stimulation was repeated by the same physician within the global period and then cancelled again prior to stimulation.
`78`	Return to OR for procedure following initial procedure	Use if the patient required a return to procedure suite for an unplanned intervention preceding the cancellation.
`91`	Repeat clinical diagnostic laboratory test	Use when a lab test was repeated (e.g., baseline labs repeated) prior to stimulation and associated with the cancelled cycle.
`99`	Multiple modifiers	Administrative use to indicate multiple informational modifiers not listed elsewhere when payer requires it for reporting.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery	Use when advanced practice clinician provided assistant services for an associated procedure prior to cycle cancellation.
`GC`	Service performed in part by a resident under the direction of a teaching physician	Use when residents participated in pre-procedure services prior to cancellation.
`Q5`	Service furnished under an outpatient hospital or ambulatory surgical center (ASC) provider agreement	Use when the cancelled cycle services were furnished in an ASC setting under an agreement.

Taxonomy Code	Specialty	Notes
`233K00000X`	Reproductive Endocrinology and Infertility (REI)	Primary specialty managing IVF cycles and cancellations.
`2084P0800X`	Obstetrics & Gynecology	Common provider specialty involved in fertility care and cycle planning.
`363A00000X`	Clinical Laboratory Director	Labs and hormonal testing utilized in pre-stimulation assessment.
`363L00000X`	Clinical Laboratory Testing/Processing	Laboratory services performing baseline testing prior to stimulation.
`367S00000X`	Nurse Practitioner	Advanced practice clinicians who manage cycle coordination and patient counseling.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`N97.0`	Female infertility associated with anovulation	Common indication for IVF planning; poor response or medical findings may lead to cancellation prior to stimulation.
`N97.1`	Female infertility associated with tubal factor	Tubal factor infertility is a frequent cause of infertility and part of the pre-cycle evaluation leading to IVF scheduling.
`N97.9`	Female infertility, unspecified	General infertility diagnosis under which an IVF cycle may be planned and subsequently cancelled.
`E78.5`	Hyperlipidemia, unspecified	Medical comorbidity that may be a new contraindication discovered prior to stimulation prompting cancellation.
`I10`	Essential (primary) hypertension	Uncontrolled hypertension discovered in pre-stimulation assessment may contraindicate cycle stimulation and lead to cancellation.
`O98.5`	Infections complicating pregnancy, unspecified	While pregnancy-specific, acute infections or acute medical conditions in reproductive-age patients can necessitate postponement or cancellation prior to stimulation.
`Z31.83`	Encounter for assisted reproductive fertility procedure cycle, canceled before start of stimulation	Specific code indicating cancellation of an ART cycle prior to stimulation; directly relevant to `S4017`.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`58970`	Laparoscopy, surgical; with fulguration of oviducts (any method)	Occasionally performed in infertility workup prior to IVF planning; not part of a cancelled stimulation but may be a prior related procedure in the patient's history.
`58120`	Endometrial biopsy, without dilation and curettage	Performed during infertility evaluation prior to or between cycles; may be billed separately from a cancelled stimulation.
`76830`	Transvaginal ultrasound, non-obstetric	Baseline pelvic ultrasound commonly performed before initiation of stimulation; frequently performed in the pre-stimulation visit that precedes cancellation.
`80053`	Comprehensive metabolic panel (CMP)	Example lab panel obtained during pre-stimulation assessment; may be repeated or billed separately if done prior to cancellation.
`83970`	Follicle stimulating hormone (FSH) assay	Endocrine testing commonly obtained in ART evaluation prior to stimulation and relevant to decisions to cancel a cycle.
`89250`	Semen analysis; presence and motility of sperm counts	Male partner testing commonly performed during infertility workup and may be present in the patient record when a cycle is cancelled.

HCPCS Level II S2152: Solid Organ Transplantation Global Care

HCPCS-LEVEL-II-S2266-INDUCED-ABORTION-29-TO-31-WEEKS

HCPCS Level II S2266: Induced Abortion, 29 to 31 Weeks

HCPCS-LEVEL-II-S3630-EOSINOPHIL-COUNT-BLOOD-DIRECT

HCPCS Level II S3630: Eosinophil Count, Blood, Direct

HCPCS-LEVEL-II-S8055-ULTRASOUND-GUIDANCE-MULTIFETAL-REDUCTION-TC

HCPCS Level II S8055: Ultrasound Guidance for Multifetal Pregnancy Reduction, Technical Component

HCPCS-LEVEL-II-S8940-EQUESTRIAN-HIPPOTHERAPY-PER-SESSION

HCPCS Level II S8940: Equestrian/Hippotherapy, Per Session

HCPCS-LEVEL-II-S9024-PARANASAL-SINUS-ULTRASOUND

HCPCS Level II S9024: Paranasal Sinus Ultrasound

HCPCS-LEVEL-II-S9366-HOME-TPN-1-2L-PER-DAY-HOME-INFUSION

HCPCS Level II S9366: Home TPN, 1–2 L/day, Per Diem

HCPCS-LEVEL-II-S9446-GROUP-PATIENT-EDUCATION-NON-PHYSICIAN

HCPCS Level II S9446: Group Patient Education by Non-Physician Provider

HCPCS-LEVEL-II-S9451-EXERCISE-CLASS-NON-PHYSICIAN-SESSION

HCPCS Level II S9451: Exercise Classes by Non-Physician Provider, Per Session

HCPCS-LEVEL-II-S9476-VESTIBULAR-REHABILITATION-PROGRAM-NON-PHYSICIAN-PER-DIEM

HCPCS Level II S9476: Vestibular Rehabilitation Program, Non-Physician, Per Diem

Showing 1–10 of 532

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

OpenPayer

HCPCS Level II S4017: Incomplete ART Cycle, Cancelled Prior to Stimulation

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Billing Code Overview

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HCPCS Level II S4017: Incomplete ART Cycle, Cancelled Prior to Stimulation

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References