ModifiedOklahoma Health Care AuthorityPolicy N/A

Cough Assist Device Coverage

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This guideline governs medical necessity and prior authorization for cough assist devices and related interfaces for Oklahoma Medicaid members. It defines initial coverage criteria, continued rental requirements, documentation obligations, and billing limitations.

Policy Summary

PayerOklahoma Health Care Authority

PolicyCough Assist Device Coverage

Policy CodePolicy N/A

Change TypeRevision of existing criteria

Effective DateJune 6, 2025

Last ReviewJun 1, 2025

Next Review DateJune 1, 2028

Key ActionSubmit prior authorization for E0482 and A7020 with the required clinical documentation.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

E0482Covered device requiring prior authorization

ALL 4Initial coverage requirements

13 monthsMaximum total rental period

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ModifiedOklahoma Health Care AuthorityPolicy N/A

Cough Assist Device Coverage

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Sign up for all Oklahoma Health Care Authority policy alerts

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Policy Summary

PayerOklahoma Health Care Authority

PolicyCough Assist Device Coverage

Policy CodePolicy N/A

Change TypeRevision of existing criteria

Effective DateJune 6, 2025

Last ReviewJun 1, 2025

Next Review DateJune 1, 2028

Key ActionSubmit prior authorization for E0482 and A7020 with the required clinical documentation.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

E0482Covered device requiring prior authorization

ALL 4Initial coverage requirements

13 monthsMaximum total rental period

1 unit/monthPost-purchase interface limit

Bundled in rentalInterface billing during rental

Coverage Criteria

Initial Coverage

A cough assist device (E0482) is considered medically necessary when ALL of the following criteria are met.

Initial coverage

Qualifying clinical condition
- Cystic fibrosis: The member has a documented diagnosis of cystic fibrosis.
- Bronchiectasis or ciliary dyskinesia
  - Associated severity finding: The member has either a daily productive cough of 6 months continuous duration or frequent pulmonary exacerbation episodes requiring IV antibiotic and/or steroid therapy.Daily productive cough: 6 months continuous duration; pulmonary exacerbations: >2 per year
- Post-lung transplant: The member is within the first 6 months post lung transplant and is unable to tolerate standard chest physiotherapy.First 6 months
- Neuromuscular disease or related impairment: The member has a documented neuromuscular disease process resulting in inability to clear retained pulmonary secretions, including post-poliomyelitis, acid maltase deficiency, anterior horn cell disease, multiple sclerosis, quadriplegia, hereditary muscular dystrophy, myotonic disorder, other myopathies, paralysis of the diaphragm, severe developmental disability resulting in inability to manage thick mucus, or cranial devastation such as tumor or CVA resulting in flaccid or spastic body functions.
Alternative therapy failure or inability to perform therapy: Alternative therapy, such as daily percussion and postural drainage, autologous drainage, positive end expiratory pressure, and/or a flutter link device, is documented as ineffective, not tolerated, or contraindicated, and/or the caregiver is unable to provide effective chest percussion and postural drainage.
Treating-provider orders: Written treating-provider orders specify the frequency and duration of pulmonary treatments.
Hospital or IV antibiotic documentation when indicated: When indicated, hospital admission notes and/or orders for IV antibiotic therapy prescribed as a direct result of ineffective airway clearance are submitted.

Continued Rental Coverage

Continued rental coverage is available when all ongoing documentation requirements are met.

Continued rental coverage: Documentation confirms that the device remains medically indicated, continues to be used by the member as prescribed by the treating provider, and continues to be effective at improving the member's lung function.Up to 13 months total rental

During the E0482 capped rental period, the A7020 interface is included with the cough assist device and is not separately billable.

Covered Codes and Key Limits

HCPCS Codes Covered Requiring Prior Authorization (PA)HCPCSCovered

E0482	See HCPCS manual for code description
A7020	See HCPCS manual for code description

Daily Productive Cough

Required duration6 months of continuous duration

SymptomDaily productive cough

Qualifying contextAssociated with bronchiectasis or ciliary dyskinesia as an airway-clearance severity finding

Pulmonary Exacerbation Episodes

Required frequencyMore than 2 episodes per year

Episode typePulmonary exacerbation episodes

Required treatment

Provider Actions and Coverage Risks

Prior Authorization

Prior Authorization Required

Prior authorization is required for the cough assist device and its interface code. Submit PA in accordance with the OHCA HCPCS manual.

E0482 — cough assist device
A7020 — interface for cough stimulating device, including all components; replacement only

Step Therapy

Alternative Airway-Clearance Therapy Required

An alternative airway-clearance approach must be tried or otherwise addressed before initial coverage of E0482. The record must establish that the alternative was ineffective, not tolerated, contraindicated, or could not be provided effectively by the caregiver.

Examples include daily percussion and postural drainage, autologous drainage, positive end-expiratory pressure, and/or a flutter valve device.
Document the applicable failure, intolerance, contraindication, or caregiver limitation.

Device Background

A cough assist device supports secretion clearance by gradually applying positive airway pressure and then shifting to negative pressure. This produces high outward airflow that stimulates a natural cough, helping individuals who cannot cough effectively clear retained pulmonary secretions.

Defined Terms

Cystic Fibrosis (CF)

Disease typeAn inherited disease

Characteristic featureBuildup of thick, sticky mucus that can damage many of the body's organs

Common effectsProgressive respiratory-system damage and chronic digestive-system problems

Bronchiectasis

Disease typeA form of chronic obstructive pulmonary disease (COPD)

Airway changesThe large airways become damaged and widened

Clinical consequencesMucus can collect in the dilated airways, allowing bacteria to grow and cause recurrent lung infections

Medical Necessity Determination

Initial Medical Necessity

The cough assist device is medically necessary when all initial coverage requirements are met.

Initial medical necessity

Qualifying clinical condition
- Cystic fibrosis: Documented diagnosis of cystic fibrosis.
- Bronchiectasis or ciliary dyskinesia
  - Associated severity finding: Either a daily productive cough of 6 months continuous duration or frequent pulmonary exacerbation episodes requiring IV antibiotic and/or steroid therapy.Daily productive cough: 6 months continuous duration; pulmonary exacerbations: >2 per year

Rental and Purchase Rules

Equipment	Billing treatment	Duration or limit	Documentation requirement
E0482 cough assist device	Capped rental	Up to 13 months total	Submit documentation confirming the device remains medically indicated, is used as prescribed, and continues to improve the member’s lung function.

Equipment	Billing treatment	Duration or limit	Billing restriction and documentation
A7020 interface for cough stimulating device, including all components; replacement only	Separately reimbursable after the cough stimulating device has been purchased	Up to one (1) unit per month	During the E0482 capped rental period, A7020 is included with E0482 and is not separately billable. After purchase, documentation must confirm the cough assist device remains medically indicated, is used as prescribed, and continues to improve the member’s lung function.

Documentation Requirements

Documentation Required

Submit initial coverage documentation

For initial E0482 coverage, submit clinical documentation establishing a qualifying diagnosis or clinical circumstance, documentation of failure or inability to use alternative airway-clearance therapy, and written treating-provider orders specifying treatment frequency and duration.

The member must have one qualifying condition or clinical circumstance.
Document alternative therapy as ineffective, not tolerated, or contraindicated, and/or document the caregiver's inability to provide effective chest percussion and postural drainage.
Include written orders specifying pulmonary-treatment frequency and duration.

Documentation Required

Document continued medical necessity

For rental continuation and post-purchase A7020 reimbursement, submit documentation confirming that the cough assist device remains medically indicated, continues to be used as prescribed by the treating provider, and continues to be effective at improving the member's lung function.

Noncovered or Bundled Services

A7020 is not separately billable during the E0482 capped rental period because the interface is included with the cough assist device. After the device is purchased, A7020 may be separately reimbursed at up to one unit per month when the required ongoing medical-necessity documentation is submitted.

Policy Summary

PayerOklahoma Health Care Authority

PolicyCough Assist Device Coverage

Policy CodePolicy N/A

Change TypeRevision of existing criteria

Effective DateJune 6, 2025

Last ReviewJun 1, 2025

Next Review DateJune 1, 2028

Key ActionSubmit prior authorization for E0482 and A7020 with the required clinical documentation.

SourceLink

On This Page

Episodes require IV antibiotic and/or steroid therapy

Post-Lung-Transplant Period

Applicable periodFirst 6 months after lung transplant

Clinical circumstanceMember is within the first 6 months post lung transplant

Additional requirementUnable to tolerate standard chest physiotherapy

Continued Rental Period

Maximum durationUp to 13 months total

Coverage conditionDocumentation confirms the device remains medically indicated, is used as prescribed, and continues to improve lung function

Coverage typeContinued rental coverage

Post-Purchase A7020 Reimbursement

Monthly limitUp to one (1) unit per month

When allowedAfter the cough stimulating device has been purchased

Billing status during rentalA7020 is included with E0482 during the capped rental period and is not separately billable

Documentation Required

Alternative Therapy Documentation

Document the alternative therapy used or considered and the specific reason it does not provide effective airway clearance. Caregiver inability to provide effective chest percussion and postural drainage must also be documented when applicable.

Identify the therapy, duration or use history, and clinical response.
State whether the therapy was ineffective, not tolerated, contraindicated, or unable to be performed effectively by the caregiver.

Documentation Required

Treating-Provider Orders Required

Submit written orders from the treating provider specifying the frequency and duration of pulmonary treatments.

Orders must identify the prescribed treatment frequency.
Orders must identify the prescribed treatment duration.

Documentation Required

Hospital and IV Antibiotic Records

When the applicable clinical circumstance is present, submit hospital admission notes and/or orders for IV antibiotic therapy prescribed directly as a result of ineffective airway clearance.

Provide hospital admit notes when relevant.
Provide IV antibiotic orders when pulmonary exacerbations required IV antibiotic therapy because of ineffective airway clearance.

Documentation Required

Ongoing Medical-Necessity Documentation

For continued rental coverage, documentation must confirm that the device remains medically indicated, is being used as prescribed by the treating provider, and remains effective at improving the member’s lung function. Continued rental is available for up to 13 months total.

During the capped rental period, A7020 is included with E0482 and is not separately billable.
After the cough stimulating device is purchased, A7020 may be separately reimbursed at no more than one unit per month.
Post-purchase A7020 claims also require documentation of ongoing medical indication, prescribed use, and continued effectiveness in improving lung function.

Denial Risk

Failure to Meet Initial Coverage Criteria

Initial coverage may be denied when the member does not meet every applicable medical-necessity and documentation requirement for E0482. The member must meet one qualifying clinical pathway and all required supporting conditions.

Qualifying pathway: cystic fibrosis; bronchiectasis confirmed by high-resolution or spiral CT or ciliary dyskinesia with either a daily productive cough for six continuous months or more than two pulmonary exacerbations per year requiring IV antibiotics and/or steroids; first six months after lung transplant with inability to tolerate standard chest physiotherapy; or a qualifying neuromuscular condition causing inability to clear retained pulmonary secretions.
Qualifying neuromuscular conditions include post-poliomyelitis, acid maltase deficiency, anterior horn cell disease, multiple sclerosis, quadriplegia, hereditary muscular dystrophy, myotonic disorder, other myopathies, paralysis of the diaphragm, severe developmental disability causing inability to manage thick mucus, or cranial devastation such as tumor or CVA causing flaccid or spastic body functions.
Alternative airway-clearance therapy documentation, written treating-provider orders specifying treatment frequency and duration, and applicable hospital or IV-antibiotic records must also be submitted.

Denial Risk

Insufficient Continued-Rental Documentation

Continued rental or post-purchase interface reimbursement may be denied, discontinued, or not separately reimbursed when required ongoing medical-necessity documentation is insufficient.

For continued rental, document ongoing medical indication, use as prescribed, and continued effectiveness in improving lung function.
Continued rental is limited to 13 months total.
A7020 is not separately billable during the capped rental period; after purchase, separate reimbursement is limited to one unit per month and requires the same ongoing documentation.

Cough Assist Device

Primary functionAssists in clearing secretions

Pressure sequenceGradually applies positive airway pressure and then shifts to negative pressure

ResultProduces a high outward flow of air that stimulates a natural cough

Post-lung transplant: Within the first 6 months post lung transplant and unable to tolerate standard chest physiotherapy.First 6 months

Neuromuscular disease or related impairment: Documented neuromuscular disease process resulting in inability to clear retained pulmonary secretions, including post-poliomyelitis, acid maltase deficiency, anterior horn cell disease, multiple sclerosis, quadriplegia, hereditary muscular dystrophy, myotonic disorder, other myopathies, paralysis of the diaphragm, severe developmental disability resulting in inability to manage thick mucus, or cranial devastation such as tumor or CVA resulting in flaccid or spastic body functions.

Alternative therapy failure or inability to perform therapy: Alternative therapy, such as daily percussion and postural drainage, autologous drainage, positive end expiratory pressure, and/or a flutter link device, is documented as ineffective, not tolerated, or contraindicated, and/or the caregiver is unable to provide effective chest percussion and postural drainage.

Treating-provider orders: Written treating-provider orders specify the frequency and duration of pulmonary treatments.

Hospital or IV antibiotic documentation when indicated: When indicated, hospital admission notes and/or orders for IV antibiotic therapy prescribed as a direct result of ineffective airway clearance are submitted.

Continued rental coverage is available up to 13 months total.

After purchase, A7020 may be separately reimbursed up to one (1) unit per month when the required ongoing documentation is submitted.