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    v1.0.30
    OpenPayerBilling CodesOther Procedures on the Salivary Gland and DuctsCPT cpt-42650-salivary-duct-dilation-probe-insertion
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    CPT 42650: Salivary Duct Dilation with Probe

    Medicare pays $79 on average nationally for this procedure.

    CPT code 42650 describes insertion of a probe to dilate a salivary duct, a minor diagnostic/therapeutic ductal dilation procedure typically performed by an otolaryngologist or oral/maxillofacial surgeon in an ambulatory surgery center or office procedural suite using local or general anesthesia as needed; the service involves mechanical probing to relieve ductal obstruction and restore salivary flow.

    For related coverage guidance, see recent payer policy updates: Surgical Procedures, Outpatient Surgical Procedures - Site of Service, Site of Service Ambulatory Service Center (ASC) Select — Surgical or Diagnostic Procedures in Adults.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult presenting to an otolaryngology clinic with recurrent painful swelling of the submandibular or parotid region, especially at mealtimes, and symptoms consistent with sialadenitis or suspected sialolithiasis obstructing a major salivary duct. The workflow begins with history and focused exam, salivary gland imaging (ultrasound or sialography) as needed, and topical or local anesthesia. The provider performs duct probing and dilation using a sterile probe to relieve obstruction or to allow subsequent irrigation, stone retrieval, or endoscopic access. The procedure is often performed in an office procedure room or ambulatory surgery center under local anesthesia with or without sedation. Typical documentation includes indication, informed consent, anesthesia type, laterality, procedure steps (probe insertion, dilation method, any irrigation or stone removal), estimated blood loss (usually minimal), complications (if any), and post-procedure instructions for gland massage and hydration.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    42650Dilation of salivary duct with probe (insertion of probe to dilate duct)Primary procedure to relieve ductal obstruction and allow irrigation or stone retrieval.
    42640Excision of salivary gland; submandibularPerformed when definitive removal of an affected gland is required after failed ductal procedures.
    42415Sialolithotomy, transfacial or intraoral, with removal of calculus of salivary glandUsed when a sialolith is identified and removed, often following duct dilation for access.
    42660Incision and drainage, salivary gland abscessPerformed if infection or abscess complicates duct obstruction and requires drainage.
    40499Unlisted procedure, dentoalveolar structuresOccasionally used for atypical salivary duct procedures or techniques not covered by specific codes.

    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…
    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…
    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…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207Y00000X
    207L00000X
    363LA2200X
    207K00000X
    207RP1002X
    1835C0205X
    261QX0100X
    347B00000X

    Related Payer Policy Updates

    Specialty: General Surgery1 / 3

    10 rows

    PolicyPayerEffective Date
    Surgical ProceduresUnitedHealthcare2026-09-01
    Outpatient Surgical Procedures - Site of ServiceUnitedHealthcare2026-09-01
    Site of Service Ambulatory Service Center (ASC) Select — Surgical or Diagnostic Procedures in AdultsPremera Bluecross2026-09-01
    Site of Service Ambulatory Surgical Center (ASC) Select — Surgical or Diagnostic Procedures in AdultsPremera Bluecross2026-09-01
    Site of Service Ambulatory Service Center (ASC) SelectPremera Bluecross2026-09-01
    Site of Service Ambulatory Surgical Center (ASC) Select — Site of Service for Ambulatory Surgical Procedures (ASC Select)Premera Bluecross2026-09-01
    Site of Service Ambulatory Service Center (ASC) SelectPremera Bluecross2026-09-01
    Outpatient Surgical Procedures - Site of Servicesierra health and life2026-08-01
    Medical Necessity Guidelines — Inpatient Surgical CareMass General Brigham Health Plan2026-08-01
    Ambulatory Surgery Center (ASC) - Site of Care PolicyKaiser Permanente2026-08-01

    Related Codes

    CPT-42550-SIALOGRAPHY-SALIVARY-GLAND-IMAGING

    CPT 42550: Sialography (Radiosialography)

    CPT-42600-SURGICAL-MANAGEMENT-SALIVARY-FISTULA

    CPT 42600: Salivary Fistula Repair/Drainage

    CPT-42660-SALIVARY-DUCT-DILATION-AND-CATHETERIZATION

    CPT 42660: Salivary Duct Dilation and Catheterization

    CPT-42665-INTRAORAL-SALIVARY-DUCT-LIGATION

    CPT 42665: Intraoral Salivary Duct Ligation

    CPT-42699-SALIVARY-GLAND-DUCT-PROCEDURE-UNLISTED

    CPT 42699: Unlisted Procedure on Salivary Gland or Duct

    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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