A7504 Tracheostoma HME Filter Reimbursement

HCPCS Level II code A7504 designates a filter component for a tracheostoma heat and moisture exchange (HME) system. Such filters are used in tracheostomy care to help humidify and warm inspired air, reducing airway irritation and mucus plugging risk. As a discrete supply code, A7504 matters nationally for billing respiratory supplies in home health, outpatient respiratory therapy, and long-term care settings where tracheostomy management is provided.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical function and service context, typical sites of service, and which major payers commonly cover this supply. The publication also summarizes benchmark considerations and common claims modifiers used with durable medical supplies, and highlights areas where policy updates or payer-specific coverage rules can affect reimbursement and documentation requirements.

This summary is intended to orient clinicians, billing staff, and policy professionals to the clinical purpose of A7504, the payer landscape, and the types of benchmarks and policy details that influence coverage and claims processing for tracheostoma HME filters.

Billing Code Overview

HCPCS Level II code A7504 describes a filter for use in a tracheostoma heat and moisture exchange system, each. This item is a disposable or replaceable component designed to capture moisture and heat during exhalation and return them during inhalation to help condition inspired air for patients with a tracheostoma.

Service Type: Durable medical supply for respiratory care

Typical Site of Service: Home respiratory care, outpatient clinics, or long-term care settings where tracheostomy management occurs

Clinical Context

A patient with a chronic tracheostomy uses a heat and moisture exchange (HME) system to warm and humidify inspired air and to filter particulates. The device billed with A7504 is a disposable filter component that fits into an HME placed at the tracheostoma. Typical patients include adults or pediatric patients with permanent or long-term tracheostomies following respiratory failure, prolonged mechanical ventilation, airway obstruction, or laryngectomy.

Clinical workflow: On a routine outpatient durable medical equipment (DME) visit or during a home health nursing visit, the clinician assesses the tracheostomy stoma, evaluates secretion burden and respiratory status, and determines the need to replace the HME filter. The DME supplier dispenses A7504 items in quantities appropriate to patient needs and payer coverage. Nursing or caregiver education is provided on filter insertion, handling, replacement frequency, and monitoring for increased work of breathing or increased secretions. Documentation includes tracheostoma assessment, device fit and compatibility, date of service, quantity supplied, and payer-specific coverage notes.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier	Use when no supplemental modifier applies.

Taxonomy Code	Specialty	Notes
`254E00000X`	Respiratory Therapist	Primary clinician for tracheostomy care, device selection, and education.
`334100000X`	Otolaryngology (ENT)	Manages airway surgeries and long-term tracheostomy patients.
`207Q00000X`	Pulmonology	Manages chronic respiratory failure and tracheostomy-dependent patients.
`163W00000X`	Family Medicine	Provides routine outpatient management and coordination of DME supplies.
`363A00000X`	Home Health Agency	Provides in-home nursing assessment and device instruction.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`J95.0`	Tracheostomy complications	Directly relevant when tracheostoma care requires replacement or special filter use.
`Z93.0`	Tracheostomy status	Indicates presence of a tracheostomy; primary reason for ongoing HME filter provision.
`J96.00`	Acute respiratory failure, unspecified whether with hypoxia or hypercapnia	Patients with prior respiratory failure may require tracheostomy and HME use during recovery.
`Z99.11`	Dependence on respirator [ventilator] status, less than 24 hours a day	Relevant when ventilator-dependent patients transition to tracheostomy care that may include HME filters when off-ventilation.
`J44.9`	Chronic obstructive pulmonary disease, unspecified	COPD patients may have tracheostomies and benefit from HME filtration and humidification.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`31500`	Intubation, endotracheal, emergency procedure	May precede tracheostomy placement in acute airway management prior to long-term tracheostomy and subsequent HME use.
`31600`	Tracheostomy, planned; temporary	Surgical creation of a tracheostoma that establishes the need for tracheostoma HME filters like `A7504`.
`31603`	Tracheostomy, planned; permanent	Permanent tracheostomy procedure leading to long-term use of HME filters.
`94002`	Ventilation assist and management; initiation of pressure or volume preset ventilator for assisted or controlled breathing	Related for patients transitioning from mechanical ventilation to tracheostomy care where HME filters may be used.
`94640`	Pressurized or non-pressurized inhalation treatment for acute airway obstruction	May be performed during management of secretions or respiratory issues in tracheostomy patients and occur in the same clinical episode as supply of HME filters.

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Summary & Overview

HCPCS A7504: Tracheostoma HME Filter, Each