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CPT 57156: Vaginal Applicator Placement for Brachytherapy

CPT code 57156 represents the fitting and placement of a vaginal applicator to hold radioactive material prior to brachytherapy. This preparatory procedure enables precise delivery of internal radiation for gynecologic malignancies and is a critical step in many radiation oncology treatment plans. Nationally, accurate coding for applicator placement affects billing integrity, care coordination with radiation therapy teams, and capture of procedural volumes.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines how payers commonly handle coverage and billing for preparatory brachytherapy procedures and highlights considerations that influence reimbursement and claims adjudication.

Readers will learn the clinical context of applicator fitting and placement, expected sites of service, and the role of this code within the radiation treatment workflow. The report also provides benchmark-oriented content on coding practices, common modifier usage (listed separately), and policy-relevant issues affecting national payer reimbursement and documentation expectations. Data not available in the input will be noted where applicable.

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Billing Code Overview

CPT code 57156 describes the fitting and placement of an intravaginal applicator or device designed to hold radioactive material prior to radiation treatment. This service is a preparatory procedure performed by a qualified provider to position a brachytherapy applicator within the vaginal canal before initiation of radiation therapy.

Service type: Procedural preparation for brachytherapy (applicator fitting and placement)
Typical site of service: Outpatient procedure area, radiation oncology clinic, or hospital outpatient department where brachytherapy treatments are delivered.

Data not available in the input.

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CPT 57156: Vaginal Applicator Placement for Brachytherapy

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Billing Code Overview

Service type: Procedural preparation for brachytherapy (applicator fitting and placement)
Typical site of service: Outpatient procedure area, radiation oncology clinic, or hospital outpatient department where brachytherapy treatments are delivered.

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 58-year-old female with stage II endometrial carcinoma is scheduled for intracavitary high-dose-rate (HDR) brachytherapy following external beam radiation therapy. The radiation oncologist performs an outpatient procedure in an ambulatory radiation oncology clinic or hospital procedure room to fit and place a vaginal cylinder applicator that will hold radioactive material for subsequent HDR treatment. Pre-procedure workflow includes verification of indication, informed consent, review of prior imaging and treatment plan, vaginal and pelvic exam to select an appropriately sized applicator, and aseptic preparation. The provider gently inserts and secures the vaginal applicator (cylinder or ovoids) to the vaginal canal and documents dimensions, fixation method, and patient tolerance. After placement, orthogonal radiographs or CT may be obtained for treatment planning and dosimetry; the actual radioactive source delivery is performed by the brachytherapy service at the planned session(s). Post-procedure documentation includes the device type and size, procedure time, any complications (bleeding, vasovagal reaction), and instructions for monitoring until radiation delivery.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing only the physician's interpretation or planning component separate from technical services in imaging or planning associated with brachytherapy.
`50`	Bilateral procedure	Use if the procedure is reported for bilateral treatment fields when applicable to services requiring bilateral coding conventions.
`51`	Multiple procedures	Use when multiple distinct procedures are billed on the same date and payer requires a multiple-procedure indicator.
`52`	Reduced services	Use when the procedure is partially reduced or not completed as planned (e.g., incomplete placement).
`53`	Discontinued procedure	Use when the procedure is started but terminated due to unforeseen circumstances (e.g., severe intolerance).
`59`	Distinct procedural service	Use to indicate a distinct procedural service separate from other services on the same day (e.g., separate from EUA or separate anesthesia).
`62`	Two surgeons	Use when two surgeons work together as primary surgeons on a single procedure.
`63`	Procedure performed on infants less than 4 kg	Rare for this procedure but available for patient-size–based reporting when applicable.
`76`	Repeat procedure by same physician	Use when the same provider repeats the applicator placement later the same day.
`78`	Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period	Use if the patient requires an unplanned re-placement in the OR/procedure room shortly after initial placement.
`80`	Assistant surgeon	Use when a surgical assistant performs substantial assistant work during the procedure.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant-at-surgery	Use when an advanced practice clinician serves as assistant-at-surgery as allowed by payer policy.
`22`	Increased procedural service	Use when the work required to place the applicator is substantially greater than typical due to complexity.
`52`	Reduced services	Use when services were partially reduced or not completed; documented reason required.

Taxonomy Code	Specialty	Notes
207P00000X	Radiation Oncology	Primary specialty performing brachytherapy applicator placement and treatment planning.
2080P0207X	Obstetrics & Gynecology	Gynecologic surgeons or gynecologic oncologists may perform placement in coordination with radiation oncology.
363LP0200X	Nuclear Medicine	Specialists involved in radioactive source handling and coordination of therapy delivery and safety protocols.
2084P0800X	Gynecologic Oncology	Subspecialists who manage malignant gynecologic conditions and coordinate brachytherapy as part of multimodal care.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C53.9`	Malignant neoplasm of cervix uteri, unspecified	Cervical cancer commonly treated with intracavitary brachytherapy requiring vaginal applicator placement.
`C54.9`	Malignant neoplasm of corpus uteri, unspecified	Endometrial cancer managed with adjuvant vaginal brachytherapy after surgery or external beam radiation.
`C56.9`	Malignant neoplasm of ovary, unspecified	Adjuvant or palliative vaginal brachytherapy may be used for local control of pelvic disease in select ovarian cancer cases.
`C76.2`	Malignant neoplasm of female genital organ, pelvic, site unspecified	Pelvic malignancies with local vaginal involvement that may require intracavitary radioactive applicator placement.
`D07.1`	Carcinoma in situ of endometrium	High-risk premalignant disease where localized radiotherapy including vaginal cylinder placement can be considered in some management pathways.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`57455`	Colposcopy of the cervix including upper/adjacent vagina; with biopsy(s)	Performed pre-treatment for tissue diagnosis or evaluation of local disease prior to planning brachytherapy.
`57460`	Colposcopy of the cervix including upper/adjacent vagina; with loop electrode biopsy(s) of the cervix	May be used earlier in diagnostic workup for cervical lesions that later require intracavitary brachytherapy.
`77295`	Therapeutic radiology simulation-aided field setting, complex	Used for treatment planning and simulation related to brachytherapy dosimetry and external beam planning.
`77316`	Brachytherapy physics consultation, treatment device design, and patient specific dosimetry	Physicist services for applicator commissioning, source loading planning, and dosimetry calculations associated with HDR brachytherapy.
`55875`	Removal of prostate brachytherapy device (separate anatomic site example)	Example of related brachytherapy device removal codes; demonstrates workflow concept of placement followed by removal; not used for vaginal applicator removal which is typically non-invasive.
`51702`	Insertion of temporary indwelling bladder catheter; simple (e.g., for urinary drainage during pelvic brachytherapy)	Common ancillary procedure for bladder management during pelvic radiation sessions or planning when required.

CPT 57150: Vaginal Canal Washout with Medication Instillation

CPT-57155-GYNECOLOGIC-BRACHYTHERAPY-UTERINE-CERVICAL-IMPLANT

CPT 57155: Gynecologic Brachytherapy, Uterine and Cervical Implant

CPT-57160-PESSARY-FITTING-AND-INSERTION-VAGINAL-PROLAPSE

CPT 57160: Pessary Fitting and Insertion for Vaginal Wall Prolapse

CPT-57170-DIAPHRAGM-CERVICAL-CAP-FITTING-AND-INSTRUCTION

CPT 57170: Diaphragm or Cervical Cap Fitting and Instruction

CPT-57180-VAGINAL-HEMOSTASIS-INSERTION-OF-HEMOSTATIC-AGENT-OR-PACK

CPT 57180: Vaginal Hemostasis by Insertion of Hemostatic Agent or Pack

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing only the physician's interpretation or planning component separate from technical services in imaging or planning associated with brachytherapy.
`50`	Bilateral procedure	Use if the procedure is reported for bilateral treatment fields when applicable to services requiring bilateral coding conventions.
`51`	Multiple procedures	Use when multiple distinct procedures are billed on the same date and payer requires a multiple-procedure indicator.
`52`	Reduced services	Use when the procedure is partially reduced or not completed as planned (e.g., incomplete placement).
`53`	Discontinued procedure	Use when the procedure is started but terminated due to unforeseen circumstances (e.g., severe intolerance).
`59`	Distinct procedural service	Use to indicate a distinct procedural service separate from other services on the same day (e.g., separate from EUA or separate anesthesia).
`62`	Two surgeons	Use when two surgeons work together as primary surgeons on a single procedure.
`63`	Procedure performed on infants less than 4 kg	Rare for this procedure but available for patient-size–based reporting when applicable.
`76`	Repeat procedure by same physician	Use when the same provider repeats the applicator placement later the same day.
`78`	Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period	Use if the patient requires an unplanned re-placement in the OR/procedure room shortly after initial placement.
`80`	Assistant surgeon	Use when a surgical assistant performs substantial assistant work during the procedure.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant-at-surgery	Use when an advanced practice clinician serves as assistant-at-surgery as allowed by payer policy.
`22`	Increased procedural service	Use when the work required to place the applicator is substantially greater than typical due to complexity.
`52`	Reduced services	Use when services were partially reduced or not completed; documented reason required.

Taxonomy Code	Specialty	Notes
207P00000X	Radiation Oncology	Primary specialty performing brachytherapy applicator placement and treatment planning.
2080P0207X	Obstetrics & Gynecology	Gynecologic surgeons or gynecologic oncologists may perform placement in coordination with radiation oncology.
363LP0200X	Nuclear Medicine	Specialists involved in radioactive source handling and coordination of therapy delivery and safety protocols.
2084P0800X	Gynecologic Oncology	Subspecialists who manage malignant gynecologic conditions and coordinate brachytherapy as part of multimodal care.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C53.9`	Malignant neoplasm of cervix uteri, unspecified	Cervical cancer commonly treated with intracavitary brachytherapy requiring vaginal applicator placement.
`C54.9`	Malignant neoplasm of corpus uteri, unspecified	Endometrial cancer managed with adjuvant vaginal brachytherapy after surgery or external beam radiation.
`C56.9`	Malignant neoplasm of ovary, unspecified	Adjuvant or palliative vaginal brachytherapy may be used for local control of pelvic disease in select ovarian cancer cases.
`C76.2`	Malignant neoplasm of female genital organ, pelvic, site unspecified	Pelvic malignancies with local vaginal involvement that may require intracavitary radioactive applicator placement.
`D07.1`	Carcinoma in situ of endometrium	High-risk premalignant disease where localized radiotherapy including vaginal cylinder placement can be considered in some management pathways.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`57455`	Colposcopy of the cervix including upper/adjacent vagina; with biopsy(s)	Performed pre-treatment for tissue diagnosis or evaluation of local disease prior to planning brachytherapy.
`57460`	Colposcopy of the cervix including upper/adjacent vagina; with loop electrode biopsy(s) of the cervix	May be used earlier in diagnostic workup for cervical lesions that later require intracavitary brachytherapy.
`77295`	Therapeutic radiology simulation-aided field setting, complex	Used for treatment planning and simulation related to brachytherapy dosimetry and external beam planning.
`77316`	Brachytherapy physics consultation, treatment device design, and patient specific dosimetry	Physicist services for applicator commissioning, source loading planning, and dosimetry calculations associated with HDR brachytherapy.
`55875`	Removal of prostate brachytherapy device (separate anatomic site example)	Example of related brachytherapy device removal codes; demonstrates workflow concept of placement followed by removal; not used for vaginal applicator removal which is typically non-invasive.
`51702`	Insertion of temporary indwelling bladder catheter; simple (e.g., for urinary drainage during pelvic brachytherapy)	Common ancillary procedure for bladder management during pelvic radiation sessions or planning when required.

CPT 57150: Vaginal Canal Washout with Medication Instillation

CPT-57155-GYNECOLOGIC-BRACHYTHERAPY-UTERINE-CERVICAL-IMPLANT

CPT 57155: Gynecologic Brachytherapy, Uterine and Cervical Implant

CPT-57160-PESSARY-FITTING-AND-INSERTION-VAGINAL-PROLAPSE

CPT 57160: Pessary Fitting and Insertion for Vaginal Wall Prolapse

CPT-57170-DIAPHRAGM-CERVICAL-CAP-FITTING-AND-INSTRUCTION

CPT 57170: Diaphragm or Cervical Cap Fitting and Instruction

CPT-57180-VAGINAL-HEMOSTASIS-INSERTION-OF-HEMOSTATIC-AGENT-OR-PACK

CPT 57180: Vaginal Hemostasis by Insertion of Hemostatic Agent or Pack

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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CPT 57156: Vaginal Applicator Placement for Brachytherapy

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Billing Code Overview

OpenPayer

CPT 57156: Vaginal Applicator Placement for Brachytherapy

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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