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    v1.0.30
    OpenPayerBilling CodesMedical And Surgical SuppliesHCPCS hcpcs-a4605-tracheal-suction-catheter-closed-system
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    HCPCS A4605: Tracheal Suction Catheter, Closed System

    HCPCS Level II code A4605 identifies a tracheal suction catheter, closed system, each, used for suctioning secretions from an endotracheal or tracheostomy tube; the service is the supply of a closed suction catheter typically used in inpatient hospital or long-term acute care settings and during mechanical ventilation to maintain airway patency and reduce infection risk.

    For related coverage guidance, see recent payer policy updates: Diabetic Supplies, Radiofrequency Ablation for Thyroid Nodules, Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Idaho Only).

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult or pediatric inpatient with an indwelling endotracheal or tracheostomy tube who requires clearance of secretions to maintain airway patency and prevent atelectasis or ventilator-associated complications. A respiratory therapist or trained nurse performs closed-system tracheal suctioning at bedside in an acute care setting such as an intensive care unit, step-down unit, or during transport. The closed suction catheter device A4605 is used to suction secretions without disconnecting the ventilator circuit, preserving positive end-expiratory pressure and reducing aerosolization risk. The workflow includes assessment of respiratory status, indication documentation (e.g., increased secretions, decreased oxygenation, ventilator alarms), preparation of equipment and personal protective equipment, performance of suctioning with appropriate technique and duration, monitoring of vital signs and ventilator parameters during the procedure, and documentation of pre- and post-procedure findings and device utilization in the medical record.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    31500Intubation, endotracheal, emergency procedureMay precede closed-system suctioning when airway is established for mechanical ventilation
    31502Intubation, endotracheal, emergency, with stabilizationRelated to initial airway placement before ongoing suctioning and ventilator care
    94002Ventilation assist and management, initial dayRepresents ventilator management services during which closed suctioning is frequently performed
    94003Ventilation assist and management, subsequent daysOngoing ventilator management where repeated closed suction catheter use is common
    94060Continuous positive airway pressure (CPAP) ventilationMay be part of respiratory support context in which closed suctioning is used for tracheostomy patients

    Related Modifiers

    8 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    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…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
    82Modifier 82 is appended to a surgical CPT code to indicate that an attending physician acted as an assistant because a qualified resident surgeon was unavailable. In teaching hospitals it documents…- When to use: Append modifier 82 in teaching-hospital settings to indicate a physician served as an assistant surgeon because a qualified resident surgeon was unavailable (includes situations where…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    171W00000X
    251X00000X
    175T00000X
    364SC2300X
    2084A2900X
    247000000X
    320600000X
    224ZL0004X

    Related Payer Policy Updates

    Specialty: Endocrinology1 / 3

    10 rows

    PolicyPayerEffective Date
    Diabetic SuppliesCigna2026-10-15
    Radiofrequency Ablation for Thyroid NodulesCigna2026-10-15
    Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Idaho Only)UnitedHealthcare2026-10-01
    Tzield (teplizumab-mzwv) CoverageUnitedHealthcare2026-10-01
    Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Indiana Only)UnitedHealthcare2026-10-01
    Medical Necessity Guidelines Insulin PumpsMass General Brigham Health Plan2026-10-01
    Medical Necessity Guidelines: Continuous Glucose MonitorsMass General Brigham Health Plan2026-10-01
    Continuous Glucose MonitoringAmbetter Nevada2026-10-01
    Salivary Hormone TestingOscar Health2026-10-01
    Parathyroid Hormone, Phosphorus, Calcium, and Magnesium TestingOscar Health2026-10-01

    Related Codes

    HCPCS-A4206-STERILE-SYRINGE-1CC-NEEDLE

    HCPCS A4206: Syringe with Needle, 1 cc or Less, Sterile

    HCPCS-A4207-STERILE-2CC-SYRINGE-WITH-NEEDLE

    HCPCS Level II A4207: Syringe with Needle, Sterile 2 cc

    HCPCS-A4208-STERILE-3CC-SYRINGE-WITH-NEEDLE

    HCPCS Level II A4208: Syringe with Needle, Sterile 3 cc

    HCPCS-A4209-STERILE-SYRINGE-WITH-NEEDLE-5CC-OR-GREATER

    HCPCS Level II A4209: Syringe with Needle, Sterile 5 cc or Greater

    HCPCS-A4210-NEEDLE-FREE-INJECTION-DEVICE

    HCPCS Level II A4210: Needle-free Injection Device, Each

    HCPCS-A4211-SUPPLIES-SELF-ADMINISTERED-INJECTIONS

    HCPCS Level II A4211: Supplies for Self-Administered Injections

    HCPCS-A4212-NON-CORING-NEEDLE-STYLET-CATHETER-ACCESS-SUPPLY

    HCPCS Level II A4212: Non-coring Needle or Stylet with/without Catheter

    HCPCS-A4213-STERILE-SYRINGE-20CC-OR-GREATER

    HCPCS Level II A4213: Syringe, Sterile, 20 cc or Greater, Each

    HCPCS-A4215-STERILE-NEEDLE-SINGLE-EACH

    HCPCS Level II A4215: Needle, Sterile, Any Size

    HCPCS-A4216-STERILE-DILUENT-FLUSH-10ML

    HCPCS Level II A4216: Sterile Diluent/Flush, 10 ml

    Showing 1–10 of 633

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    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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