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    v1.0.28
    OpenPayerBilling CodesMedical And Surgical SuppliesHCPCS hcpcs-a7505-tracheostoma-housing-heat-moisture-exchange
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    HCPCS Level II A7505: Reusable Housing for Heat and Moisture Exchange System

    HCPCS Level II code A7505 describes a reusable housing without adhesive designed for use in a heat and moisture exchange (HME) system and/or with a tracheostoma valve; the service is a durable medical equipment component intended for respiratory/airway management commonly used in home health or outpatient respiratory care settings to support humidification and airway protection for tracheostomy patients.

    For related coverage guidance, see recent payer policy updates: Salivary Hormone Testing, Bone Turnover Markers Testing, Parathyroid Hormone, Phosphorus, Calcium, and Magnesium Testing.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 68-year-old patient with a chronic tracheostomy following prolonged mechanical ventilation presents for routine replacement of a reusable tracheostomy housing component that interfaces with a heat and moisture exchange (HME) system and/or a tracheostoma valve. The patient is managed by a multidisciplinary team including a pulmonologist, otolaryngologist, respiratory therapist, and home medical equipment supplier. The clinical workflow typically includes assessment of the tracheostoma and stoma skin, verification of HME compatibility with the patient’s tracheostomy tube and valve, education on cleaning and reuse protocols, and documentation of medical necessity for ongoing use of a reusable housing device. The supplier verifies prescription details, matches the A7505 housing to the patient’s HME or tracheostoma valve system, dispenses the device, and provides device-specific instructions and follow-up arrangements for replacement or repair.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    31500Intubation, endotracheal, emergency procedurePerformed prior to tracheostomy in acute airway management; may precede long-term tracheostomy and need for an HME housing.
    31600Tracheostomy, planned; emergent or temporarySurgical creation of a tracheostoma; establishes the airway that will later utilize an HME housing such as A7505.
    31502Tracheostomy, planned, initial insertion of tracheostomy tubeCodes the initial tracheostomy tube insertion; device housings are adjunct durable medical equipment used afterward.
    94640Pressurized or nonpressurized inhalation treatment for acute airway obstructionRespiratory therapy procedures that commonly occur in the same clinical setting and may relate to ongoing stoma management and HME use.
    94620Pulmonary stress testing and respiratory therapy evaluation, initialRespiratory evaluations performed by therapists to assess HME suitability and patient conditioning for decannulation or valve use.

    Related Modifiers

    7 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…
    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…
    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…
    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…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    3336C0004XCompounding PharmacyA pharmacy that specializes in the preparation of components into a drug preparation as the result of a Practitioner's Prescription Drug Order or init…
    207Q00000XFamily Medicine PhysicianFamily Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadt…
    125J00000XDental TherapistA Dental Therapist is an individual who has completed an accredited or non-accredited dental therapy program and who has been authorized by the releva…
    207ZH0000XHematology (Pathology) PhysicianA hematopathologist is expert in diseases that affect blood cells, blood clotting mechanisms, bone marrow and lymph nodes. This physician has the know…
    261QM1102XMilitary Outpatient Operational (Transportable) Component Clinic/Center"Non-fixed" facilities or distinct parts of a "non-fixed" facility, providing outpatient medical and dental services, primarily intended for DoD activ…
    2084E0001XEpilepsy PhysicianEpilepsy is a subspecialty of neurology focused on the diagnosis and treatment of patients with epilepsy, including new-onset, medically refractory ep…
    103TP2701XGroup Psychotherapy PsychologistA psychologist who specializes in group psychology and group psychotherapy that is an evidenced-based specialty that prepares group leaders to identif…

    Related ICD-10-CM Codes

    29 rows

    ICD-10-CM CodeDescription
    E46Unspecified protein-calorie malnutrition
    G12.21Amyotrophic lateral sclerosis
    G47.30Sleep apnea, unspecified
    G47.33Obstructive sleep apnea (adult) (pediatric)
    G70.01Myasthenia gravis with (acute) exacerbation
    J84.10Pulmonary fibrosis, unspecified
    J84.112Idiopathic pulmonary fibrosis
    J95.1Acute pulmonary insufficiency following thoracic surgery
    J95.821Acute postprocedural respiratory failure
    J95.822Acute and chronic postprocedural respiratory failure

    Showing 1–10 of 29

    Related Payer Policy Updates

    Specialty: Endocrinology1 / 3

    5 rows

    PolicyPayerEffective Date
    Salivary Hormone TestingOscar Health2026-10-01
    Bone Turnover Markers TestingOscar Health2026-10-01
    Parathyroid Hormone, Phosphorus, Calcium, and Magnesium TestingOscar Health2026-10-01
    Testosterone — Coverage Criteria for Measurement and MonitoringOscar Health2026-10-01
    Thyroid Disease 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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