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    v1.0.30
    OpenPayerBilling CodesDiagnostic Ultrasound Procedures of the Pelvis Non-ObstetricalCPT cpt-76831-hysterosonography-saline-infusion-ultrasound
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    CPT 76831: Sonohysterography with Saline Infusion and Ultrasound

    Medicare pays $81 on average nationally for this procedure.

    CPT code 76831 describes an ultrasound procedure performed with infusion of saline into the uterus (sonohysterography) to evaluate the uterine cavity and endometrium; the service typically is an imaging procedure performed by an obstetrics/gynecology or radiology provider in an outpatient imaging suite or ambulatory clinic and may include use of color flow Doppler to enhance visualization.

    For related coverage guidance, see recent payer policy updates: Abortion Services, Prolonged Services for Labor Management, Prolonged Services for Labor Management.

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    Clinical & Coding Specifications

    Clinical Context

    A 34-year-old woman with a history of abnormal uterine bleeding is referred to the gynecology clinic for evaluation of suspected intrauterine pathology after an initial pelvic ultrasound suggested a possible endometrial polyp. The patient is not pregnant and has no active pelvic infection. In the outpatient ambulatory ultrasound suite, the gynecologist or radiologist explains the procedure, obtains informed consent, and positions the patient in lithotomy. A sterile speculum is inserted and the cervix cleansed. A small transcervical catheter is advanced into the uterine cavity and sterile saline is slowly infused while a transvaginal ultrasound transducer images the endometrial cavity in real time. Color flow Doppler may be used to better delineate vascular lesions. Images and cine loops are acquired and documented. The provider interprets findings and documents indications, technique (saline infusion sonohysterography), amount of saline, use of color Doppler, patient tolerance, and any complications. The typical site of service is an outpatient radiology or gynecology clinic/ambulatory procedure room; pre-procedure screening and post-procedure recovery occur in the same facility. The service performed corresponds to 76831.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    58340Hysteroscopy, diagnostic, with or without collection of specimen(s)May follow abnormal 76831 findings to directly visualize and biopsy or remove intrauterine lesions.
    88305Level IV surgical pathology, gross and microscopic examinationUsed for histopathologic analysis when tissue is obtained after hysteroscopy or sampling following sonohysterography.
    76856Transvaginal ultrasound, real time with image documentation; pregnant uterusNot typically performed for saline infusion sonography but a standard transvaginal ultrasound may be performed before or after 76831.
    76942Ultrasonic guidance for needle placement (e.g., biopsy, aspiration), imaging supervision and interpretationUsed when ultrasound guidance is needed for transcervical instrumentation or targeted sampling following findings on 76831.
    58300Endometrial sampling (biopsy) without hysteroscopyMay be performed after 76831 if focal or diffuse endometrial abnormality is suspected and an outpatient biopsy is indicated.

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    95Modifier 95 indicates that a service was provided via synchronous, real‑time audio‑video telehealth rather than in‑person. Per CMS, AAPC and professional associations, append modifier 95 to claim…- Use modifier 95 to indicate a service was furnished via synchronous, real‑time audiovisual telehealth (a live audio‑video conference between patient and provider) rather than in‑person. - Pair…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207V00000X
    207RR0500X
    207T00000X
    2084P0800X
    164W00000X
    207PS0010X
    261QV0200X
    363LP0200X

    Related Payer Policy Updates

    Specialty: Obstetrics/Gynecology1 / 3

    10 rows

    PolicyPayerEffective Date
    Abortion ServicesNew Mexico Health Care Authority2027-01-01
    Prolonged Services for Labor ManagementPremera Bluecross2027-01-01
    Prolonged Services for Labor ManagementPremera Bluecross2027-01-01
    Maternal Serum Testing for Prediction of Adverse Obstetric OutcomesPremera Bluecross2026-10-01
    Maternal Serum Testing for Prediction of Adverse Obstetric OutcomesPremera Bluecross2026-10-01
    Maternal Serum Testing for Prediction of Adverse Obstetric OutcomesBlue Cross Blue Shield - Massachusetts2026-10-01
    Cervical Cancer ScreeningOscar Health2026-10-01
    Prenatal Testing for Fetal AneuploidyOscar Health2026-10-01
    Diagnosis of VaginitisOscar Health2026-10-01
    Prenatal Screening (Nongenetic)Oscar Health2026-10-01

    Related Codes

    CPT-76830-TRANSVAGINAL-ULTRASOUND-PELVIC-IMAGING

    CPT 76830: Transvaginal Ultrasound of Female Pelvis

    CPT-76856-PELVIC-ULTRASOUND-DIAGNOSTIC-IMAGING

    CPT 76856: Pelvic Ultrasound, Diagnostic Real-Time Imaging

    CPT-76857-PELVIC-ULTRASOUND-DIAGNOSTIC-IMAGING

    CPT 76857: Pelvic Ultrasound, Diagnostic Real-Time Imaging

    Frequently Asked Questions

    References

    1. 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. 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. 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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