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    v1.0.28
    OpenPayerPolicy UpdatesDurable Medical Equipment (DME)northwood air cleaner/purifier Coverage Policy Upd…
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    CurrentnorthwoodPolicy N/A

    Air cleaner / purifier (DME) coverage criteria

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    Defines Northwood's coverage stance for air cleaners/purifiers (environmental control equipment) and the applicable HCPCS code, for members and providers seeking DME benefits.

    Policy Summary
    Payernorthwood
    PolicyAir cleaner / purifier (DME) coverage criteria
    Policy CodePolicy N/A
    Change TypeNo material change
    Effective DateN/A
    Last ReviewNov 4, 2024
    Next Review DateNov 3, 2025
    Key ActionDo not bill air cleaners/purifiers to E1399 for DME coverage; coverage determinations are made case-by-case per contract.
    SourceLink
    POLICY UPDATE CHANGES

    No material clinical or coverage changes in this revision.

    E1399HCPCS code listed for miscellaneous DME
    Not reasonable and necessaryCoverage stance for air cleaners/purifiers
    Case-by-caseCoverage determinations
    NCD/LCDPolicy references

    OpenPayer is powered by Trek Health's payer performance platform. Trek continuously ingests, validates, and normalizes Transparency in Coverage data alongside payer policies and other commercial payer data to create a structured payer intelligence foundation. OpenPayer uses this foundation to deliver personalized search results, dynamically generated policy pages, and tailored policy monitoring based on each user's payers, specialties, billing codes, and areas of interest. The same intelligence powers broader payer performance workflows, including reimbursement benchmarking, contract evaluation, payer negotiations, and financial decision-making.

    Coverage Criteria

    Not reasonable and necessary / General exclusion

    Covered when ALL of the following are met

    Primary condition: Air cleaners/purifiers are considered environmental control equipment and are not reasonable and necessary because they are not primarily medical in nature.

    Applies to devices that are used primarily and customarily for a non-medical purpose; such equipment is not considered durable medical equipment even if it has a medically related use.

    Air cleaners/purifiers are excluded as durable medical equipment. Northwood considers an air cleaner (purifier) to be environmental control equipment that is not primarily medical in nature; equipment used primarily and customarily for a non‑medical purpose is not considered DME even if it has a medically related use.

    Use of air cleaners/purifiers for members seeking DME benefits is not medically necessary for DME coverage because the equipment’s primary use is non‑medical. As stated by Northwood, items used primarily and customarily for non‑medical purposes are not considered medical equipment and therefore do not meet DME medical necessity requirements.

    Medical Necessity

    Medical necessity for air cleaners/purifiers

    Medical necessity determination: Device is used primarily and customarily for a non-medical purpose (environmental control equipment) and therefore is not considered DME.

    Coverage determinations are made on a case-by-case basis and are subject to the member's contract, medical necessity requirements, and applicable terms, conditions, limitations, and exclusions; a determination that an item is reasonable and necessary does not itself guarantee coverage — the member's contract defines covered, excluded or limited items.

    HCPCS / Billing Codes

    HCPCS Level II Codes and DescriptionHCPCS
    E1399Durable medical equipment, miscellaneous.

    Provider Actions & Billing Guidance

    Prior Authorization

    Prior authorization / coverage for E1399

    Air cleaners/purifiers billed to HCPCS code E1399 are not considered reasonable and necessary because they are environmental control equipment and therefore are not covered under this policy.

    • HCPCS: E1399 — Durable medical equipment, miscellaneous
    • Policy statement: “An Air Cleaner (purifier) is not reasonable and necessary as it is environmental control equipment and not primarily medical in nature.”
    Billing Rule

    Provider billing and verification guidance

    Submit claims with accurate HCPCS coding and ensure documentation reflects member contract coverage; Northwood’s policies assist in determining reasonableness and necessity but final coverage is determined by the member’s contract.

    • Ensure claims are not submitted as DME when the device is primarily for environmental control.
    • Verify member contract terms before billing; a reasonable and necessary determination does not guarantee coverage.
    Documentation Required

    Coverage determination and documentation requirement

    Coverage determinations are subject to the member’s contract, medical necessity requirements, and the available documentation; the member’s contract ultimately defines covered, excluded, or limited items.

    • Documentation must support medical necessity and any contract-defined coverage limits.
    • If policy guidance conflicts with contract language, the contract prevails.
    Denial Risk

    Denial risk — environmental control equipment

    Claims for air cleaners/purifiers will be denied as not reasonable and necessary when the device is considered environmental control equipment and not primarily medical in nature.

    • Denial risk applies when the device’s primary and customary use is non-medical.
    • A determination of reasonable and necessary alone does not prevent denial if the member contract excludes the item.

    Not Covered

    Not covered: Air cleaners and purifiers, classified as environmental control equipment, are not covered as durable medical equipment under this policy because they are not primarily medical in nature.

    Rental & Purchase Rules

    EquipmentRental / Purchase rules
    Air cleaner / purifier
    Policy does not specify rental or purchase rules for air cleaners/purifiers; coverage determinations are made case-by-case and subject to the member's contract and medical necessity requirements.

    Replacement

    inv-14: Air cleaner / purifier — replacement guidance
    Replacement interval specifiedNone specified in policy for air cleaners/purifiers; policy states 'None specified in policy.'
    Replacement guidance contextReplacement and replacement-interval decisions are subject to member contract and medical necessity requirements as noted in the Important Note.
    Equipment classification impactBecause air cleaners/purifiers are classified as environmental control equipment (non-medical primary use), they are not considered DME for coverage or replacement under this policy.

    Documentation Requirements

    Documentation Required

    Documentation to support coverage determinations

    Maintain documentation that supports the contract-defined coverage and medical necessity determination; documentation may be requested to substantiate benefit eligibility.

    • Include clinical notes explaining medical need and any contract provisions relied upon for coverage decisions.
    • Retain records to support that the device is not primarily non-medical if pursuing coverage.

    Definitions

    inv-10: Air cleaner / purifier — definition: device that cleans air from dust, pollens and allergens
    DefinitionAir cleaner (purifier): a device that cleans air from dust, pollens and allergens.
    Typical useCommonly used for environmental control to remove dust, pollens and allergens from indoor air.
    Coverage implicationClassified as environmental control equipment; not reasonable and necessary as DME when used primarily for non-medical purposes.
    inv-11: Environmental control equipment — definition: equipment used primarily and customarily for a non-medical purpose and therefore not considered durable medical equipment
    DefinitionEnvironmental control equipment: equipment used primarily and customarily for a non-medical purpose and therefore not considered durable medical equipment.
    Policy consequenceItems classified as environmental control equipment are not reasonable and necessary DME even if they have a medically related use.
    Coverage determinationsFinal coverage depends on the member's contract; the policy states that a conclusion of reasonable and necessary does not itself guarantee coverage.

    Background

    Air cleaners and purifiers are devices that remove dust, pollens, and allergens from the air and are commonly used for environmental control. Northwood classifies these devices as environmental control equipment, and when equipment is used primarily and customarily for a non‑medical purpose it is not considered DME even if it has a medically related use.

    Policy Summary
    Payernorthwood
    PolicyAir cleaner / purifier (DME) coverage criteria
    Policy CodePolicy N/A
    Change TypeNo material change
    Effective DateN/A
    Last ReviewNov 4, 2024
    Next Review DateNov 3, 2025
    Key ActionDo not bill air cleaners/purifiers to E1399 for DME coverage; coverage determinations are made case-by-case per contract.
    SourceLink
    On This Page
    Coverage CriteriaMedical NecessityHCPCS / Billing CodesProvider Actions & Billing GuidanceNot CoveredRental & Purchase RulesReplacementDocumentation RequirementsDefinitionsBackground