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Air-fluidized bed (Pressure reducing support surface - Group 3) coverage and medical necessity

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Coverage and medical necessity criteria for air-fluidized beds (HCPCS E0194) as a Group 3 pressure reducing support surface for members requiring DME; governs supplier and treating practitioner documentation, coverage limitations, and contraindications.

Policy Summary

Payernorthwood

PolicyAir-fluidized bed (Pressure reducing support surface - Group 3) coverage and medical necessity

Policy CodePolicy N/A

Change TypeNo material changes

Effective Date

Last ReviewDec 8, 2025

Next Review Date

Key ActionObtain and retain a monthly treating practitioner written statement documenting ulcer size, care-plan changes if not healing, and continued medical necessity prior to delivery and for each month of use.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

E0194HCPCS code for air-fluidized bed

Stage 3 or 4Pressure ulcer stages required for coverage

1 monthMinimum duration of prior conservative treatment

Monthly

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CurrentnorthwoodPolicy N/A

Air-fluidized bed (Pressure reducing support surface - Group 3) coverage and medical necessity

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Policy Summary

Payernorthwood

PolicyAir-fluidized bed (Pressure reducing support surface - Group 3) coverage and medical necessity

Policy CodePolicy N/A

Change TypeNo material changes

Effective Date

Last ReviewDec 8, 2025

Next Review Date

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

E0194HCPCS code for air-fluidized bed

Stage 3 or 4Pressure ulcer stages required for coverage

1 monthMinimum duration of prior conservative treatment

Monthly

Practitioner recertification frequency

Group 3Support surface category

Annual thru 12-8-2025Policy maintenance history

Coverage & Eligibility Criteria

Initial coverage criteria

Covered when ALL of the following are met:

Primary coverage criteria: 1. Member has a stage 3 or stage 4 pressure ulcer; 2. Member is bedridden or chair bound due to severely limited mobility; 3. In the absence of an air-fluidized bed, the member would require institutionalization; 4. The air-fluidized bed is ordered in writing by the treating practitioner based upon a comprehensive assessment generally performed within one month prior to initiation; 5. Completion of at least one month of conservative treatment without progression toward wound healing (conservative treatment elements specified); 6. A trained adult caregiver is available to assist with required care; 7. The treating practitioner directs home treatment and reevaluates and recertifies the need monthly; 8. All alternative equipment has been considered and ruled out.

Conservative treatment elements include frequent repositioning, use of a Group 2 support surface, infection treatment, nutrition optimization, debridement (including wet-to-dry when used for debridement), maintenance of a moist wound bed with appropriate occlusive dressing when required, education, weekly assessment, and moisture/incontinence management.

Continuation criteria

Continued coverage requires:

Monthly recertification: Treating practitioner must document monthly that continued use is medically necessary for wound management until the ulcer is healed or document that other aspects of the care plan are being modified to promote healing.monthly

Supplier must retain the treating practitioner's monthly statement on file; KX modifier may be used only when criteria are met and monthly certification indicates continued need.

Practitioner Statement Criteria

Covered when the treating practitioner documents relevant clinical conditions and medical necessity consistent with member contract and CMS/LCD/NCD guidance.

Practitioner-documented conditions: At least one of the following is indicated on the Statement of Treating Practitioner or equivalent documentation: completely immobile; limited mobility; any pressure ulcer on the trunk or pelvis; impaired nutritional status; fecal or urinary incontinence; altered sensory perception; compromised circulatory status.1 of 7

If none of the listed conditions apply, a separate statement documenting medical necessity must be attached. The practitioner must provide an estimated length of need and sign the form.

Payment for an air‑fluidized bed does not include compensation for a caregiver’s wages nor does it cover architectural modifications to the member’s home. Examples of excluded architectural adjustments include electrical or structural improvements required to accommodate the equipment (e.g., reinforcement of flooring or upgrades to the electrical system). These exclusions are separate from the clinical coverage criteria and remain the financial responsibility of the member or their contractor.

Equipment that is used primarily or customarily for a non‑medical purpose is not considered durable medical equipment (DME). Final determinations of whether a specific product is a covered DME item are made in accordance with the member’s contract and applicable plan terms; the policy’s medical necessity finding alone does not guarantee coverage if the contract excludes the item.

An air‑fluidized bed is considered not reasonable and necessary when contraindications are present. Specifically, coverage is denied when the member has coexisting pulmonary disease that impairs effective coughing or when the member requires unprotected wet soaks or moist dressings (i.e., dressings that are not covered with an occlusive barrier). Additional contraindications that preclude coverage include inability or unwillingness of the caregiver to provide required care, inadequate structural support for the bed, insufficient electrical capacity, or other known contraindications listed by the policy.

A determination that an air‑fluidized bed is medically reasonable and necessary does not by itself create coverage. Coverage remains subject to the member’s contract terms, limitations, and exclusions. If contract language excludes or limits a DME item, the contract provisions take precedence over the policy’s clinical criteria.

Billing Codes & Diagnostic Support

Covered HCPCS Level II CodesHCPCSCovered

E0194

AIR FLUIDIZED BED

ICD-10 Codes That Support Medical NecessityICD-10Covered

L89.003	Pressure ulcer of unspecified elbow, stage 3
L89.004	Pressure ulcer of unspecified elbow, stage 4
L89.013	Pressure ulcer of right elbow, stage 3
L89.014	Pressure ulcer of right elbow, stage 4
L89.023	Pressure ulcer of left elbow, stage 3
L89.024	Pressure ulcer of left elbow, stage 4
L89.103	Pressure ulcer of unspecified part of back, stage 3
L89.104	Pressure ulcer of unspecified part of back, stage 4
L89.113	Pressure ulcer of right upper back, stage 3
L89.114	Pressure ulcer of right upper back, stage 4

1–10 of 49

1/5

ICD-10 Codes That Do Not Support Medical NecessityICD-10Not Covered

No codes listed

Conservative treatment duration (minimum 1 month)

Minimum duration>= 1 month of conservative treatment without progression toward wound healing

Required conservative elementsFrequent repositioning (usually every 2 hours); use of a Group 2 support surface; infection treatment; nutrition optimization; debridement; maintenance of moist wound bed with appropriate moist dressings and occlusive covering when needed

Assessment timingComprehensive evaluation generally performed within one month prior to initiation of air-fluidized bed therapy

Institutional care allowanceThe 1-month conservative treatment may include time in an institution if documentation verifies treatment rendered

Provider Requirements & Prior Authorization

Prior Authorization

Prior authorization required for E0194

Air-fluidized bed (HCPCS E0194) requires prior authorization and documentation that all policy coverage criteria are met, including: presence of a stage 3 or 4 pressure ulcer; bedridden or chair‑bound status due to severely limited mobility; comprehensive treating practitioner assessment generally within one month prior to initiation; completion of at least one month of conservative treatment without progression toward wound healing; availability of a trained adult caregiver; monthly practitioner recertification; and that alternatives have been considered and ruled out.

Code: E0194
All initial coverage criteria must be documented prior to authorization

Note

Submit treating practitioner statement and clinical documentation

Submit the treating practitioner’s Statement of Treating Practitioner and supporting clinical documentation to demonstrate medical necessity; coverage determinations are made case‑by‑case and require the practitioner’s clinical responses and other documentation when requesting prior authorization.

Medical Necessity Definitions & Criteria

Air-fluidized bed medical necessity — ALL of the following

Medical necessity for an air-fluidized bed is met when ALL of the following are satisfied:

DME-specific necessity: Stage 3 or Stage 4 pressure ulcer; member is bedridden or chair bound; without an air-fluidized bed the member would require institutionalization; the bed is ordered in writing following a comprehensive assessment generally within one month prior to initiation; completion of at least one month of conservative treatment without progression toward healing including specified elements; a trained adult caregiver is available; treating practitioner reevaluates and recertifies need monthly; all alternative equipment has been considered and ruled out.

DME medical necessity supported by practitioner-documented risk factors or pressure injury presence; staging informs severity

DME medical necessity is supported by practitioner-documented risk factors or presence of a pressure injury; staging definitions inform severity.

Clinical indicators: Presence of a Stage 4, Unstageable, or Deep Tissue Pressure Injury (DTPI) as defined by NPIAP/NPUAP OR at least one high-risk condition documented on the Statement of Treating Practitioner (completely immobile, limited mobility, any pressure ulcer on trunk/pelvis, impaired nutritional status, fecal or urinary incontinence, altered sensory perception, compromised circulatory status).

Rental, Purchase & Payment Rules

HCPCS / Item	Rental	Purchase	Capped Rental / Notes
E0194 — AIR FLUIDIZED BED	Covered as rental when all policy coverage and documentation criteria are met; supplier must add KX modifier only if criteria met for initial and subsequent months.	Purchase not indicated as routine; coverage governed by policy criteria and member contract (rental is the typical billing pathway per policy).	KX modifier: add to initial claim only if all policy criteria met; for each subsequent month, add KX only if monthly treating practitioner certification documents continued medical necessity. Supplier must retain monthly practitioner statement on file and make available upon request; ACA 6407 face-to-face exam requirements apply as described in documentation section.

Required Documentation & Forms

Billing Rule

Supplier retention of monthly practitioner statement; ACA 6407 face‑to‑face exam requirement

Supplier must retain the treating practitioner's monthly written statement (specifying ulcer size, care‑plan changes if not healing, and continued medical necessity) on file and available for inspection; for certain DME items, a face‑to‑face exam by the treating physician within six months prior to the written order is required per ACA 6407 and documentation must be received prior to delivery.

ACA 6407: treating physician face‑to‑face exam within 6 months prior to written order; documentation must be received prior to delivery when applicable.
Supplier retention: monthly practitioner statements must be kept on file and available for inspection.

Documentation Required

Treating practitioner must sign and answer clinical items on the provided form

Definitions & Clinical Terms

Air-fluidized bed definition

DefinitionA support surface consisting of a bed filled with ceramic beads over which warm pressurized air is circulated to simulate fluid movement, distributing weight and creating a floating sensation

ComponentsUp to ~2,000 lbs of ceramic spherules covered by a porous polyester sheet allowing moisture and air passage

Therapeutic effectsReduces pressure and moisture at skin surface to help treat/prevent pressure ulcers and manage extensive burns

Stage 3 and Stage 4 pressure injuries (NPIAP definitions)

Stage 3 (NPIAP)Full-thickness skin loss in which adipose is visible; granulation tissue and epibole often present; slough/eschar may be visible; fascia/muscle/tendon/ligament/cartilage/bone are NOT exposed; undermining and tunneling may occur. If slough/eschar obscures extent, classify as Unstageable.

Stage 4 (NPIAP)

Background & Clinical Context

An air‑fluidized bed employs warm, pressurized air circulated through small ceramic beads to create a fluidized medium that supports and redistributes the patient’s weight. This mechanism produces a ‘floating’ effect and allows air and moisture to pass through a porous interface sheet, reducing pressure and moisture exposure to the skin. These characteristics make an air‑fluidized bed a Group 3 pressure‑reducing support surface intended for patients with severe pressure injuries (e.g., Stage 3 or 4) or other high‑risk conditions when conservative measures have failed.

Exclusions — Not Covered

Items and services that are not covered in association with provision of an air‑fluidized bed include: payment for the caregiver’s services; costs for architectural adjustments such as structural reinforcement or electrical upgrades; and provision of the bed when policy contraindications exist (for example, significant pulmonary disease or need for unprotected moist dressings). In addition, devices primarily used for non‑medical purposes are not considered DME and final benefit determinations are governed by the member’s contract and plan exclusions.

Policy Maintenance & Revision History

2010-12-03annual_review

Annual review completed (listed as 07 → 12-03-10 in maintenance log).

2011-11-10annual_review

Annual review noted; references to policy added (Nov. 2011).

2012-04-04annual_review

Annual review; reference to NH Medicaid added (04-04-12).

Policy Summary

Payernorthwood

PolicyAir-fluidized bed (Pressure reducing support surface - Group 3) coverage and medical necessity

Policy CodePolicy N/A

Change TypeNo material changes

Effective Date

Last ReviewDec 8, 2025

Next Review Date

SourceLink

On This Page

Include Statement of Treating Practitioner form (completed by treating practitioner)
Provide supporting clinical documentation showing medical necessity

Step Therapy

Prerequisite: ≥1 month conservative treatment including repositioning and Group 2 surface

Document at least one month of conservative treatment without progression toward wound healing before the air‑fluidized bed will be covered; conservative treatment must include frequent repositioning and use of a Group 2 support surface and may include other listed elements.

Minimum duration: ≥ 1 month of conservative treatment
Required elements include: frequent repositioning and use of a Group 2 support surface (plus infection treatment, nutrition optimization, debridement, moist dressings, education, weekly assessments, moisture/incontinence management)

Prior Authorization

Obtain comprehensive practitioner assessment and written order

Ensure the treating practitioner performs a comprehensive assessment and issues the written order generally within one month prior to initiation of therapy; the written order must be based on that assessment.

Comprehensive assessment generally within 1 month prior to initiation
Written order by treating practitioner based on that assessment

Documentation Required

Monthly treating practitioner documentation required

The treating practitioner must provide a written monthly statement documenting ulcer size, what aspects of the care plan are being modified if the ulcer is not healing, and that continued use of the bed is medically necessary; the supplier must keep this monthly statement on file and available for inspection.

Monthly written statement must specify ulcer size
If not healing, state what care plan changes are being made
Confirm continued medical necessity for wound management
Supplier retains monthly statement on file

Documentation Required

Treating Practitioner must complete the Statement form

Complete the Statement of Treating Practitioner form (may not be completed by the DME supplier) and include practitioner name, signature, date, UPIN, estimated length of need, and clinical responses (immobility, limited mobility, pressure ulcer on trunk/pelvis, impaired nutrition, incontinence, altered sensory perception, compromised circulation).

Form must be completed by the treating practitioner (not the DME supplier)
Include practitioner signature, printed name, UPIN, date, estimated length of need, and circled applicable conditions

Denial Risk

Denial triggers and contraindications that will lead to denial

Claims will be denied as not reasonable and necessary if coverage criteria are not met or if contraindications exist, including coexisting pulmonary disease, need for unprotected moist dressings, caregiver unwilling/unable, inadequate structural support, insufficient electrical system, or other known contraindications.

Contraindications listed: coexisting pulmonary disease; unprotected wet soaks or moist dressings; caregiver unable/unwilling; structural or electrical insufficiency; other known contraindications
Payment excludes caregiver costs and architectural adjustments

Note

Coverage depends on member contract terms and exclusions

Coverage is subject to the member’s contract, terms, conditions, limitations, and exclusions; a determination that the item is reasonable and necessary does not guarantee benefit coverage under the member’s contract.

Final benefit determinations follow the member’s contract language and applicable state/CMS requirements
Medical policy guidelines do not override contract exclusions or limits

1 of listed conditions

Estimated length of need should be documented; if none of the listed conditions apply, additional justification is required.

On the provided Statement of Treating Practitioner form the treating practitioner must print their name, sign and date the form, provide UPIN, estimate length of need, and circle applicable clinical condition responses as indicated on the form; the form must not be completed by the DME provider.

Required fields on form: practitioner name (printed), practitioner signature, practitioner UPIN, date, estimated length of need, and circled clinical conditions.
If none of the listed conditions apply, attach separate documentation explaining medical necessity.

Full-thickness skin and tissue loss with exposed or directly palpable fascia, muscle, tendon, ligament, cartilage or bone; slough/eschar may be visible; epibole, undermining and/or tunneling often occur; depth varies by location.

SourceStaging per National Pressure Injury Advisory Panel (2016 Revision)

Stage 4 Pressure Injury definition

Stage 4 Pressure InjuryFull-thickness skin and tissue loss with exposed or directly palpable fascia, muscle, tendon, ligament, cartilage or bone in the ulcer; slough and/or eschar may be visible; often includes epibole (rolled edges), undermining and/or tunneling. If slough or eschar obscures extent, classify as Unstageable.

Depth variabilityDepth varies by anatomical location; areas of significant adiposity can develop deep wounds

Note on obscured woundsIf slough or eschar obscures extent of tissue loss, the injury may be Unstageable until debrided

Unstageable Pressure Injury definition

Unstageable Pressure InjuryFull-thickness skin and tissue loss in which extent of tissue damage cannot be confirmed because it is obscured by slough or eschar; removal would reveal a Stage 3 or Stage 4 injury

Heel/eschar cautionStable eschar on the heel or ischemic limb (dry, adherent, intact without erythema or fluctuance) should not be softened or removed

ImplicationCannot be staged until slough/eschar removal reveals true depth

Deep Tissue Pressure Injury (DTPI) definition

DTPI definitionIntact or non-intact skin with localized area of persistent non-blanchable deep red, maroon, or purple discoloration or epidermal separation revealing a dark wound bed or blood-filled blister; may precede pain and temperature changes and can evolve rapidly

Clinical cautionDo not use DTPI to describe vascular, traumatic, neuropathic, or dermatologic conditions

EvolutionMay progress to reveal extent of tissue injury or resolve without tissue loss; if necrotic tissue or deeper structures are visible, classify as Unstageable, Stage 3, or Stage 4

2012-12-03annual_review

Annual review — no changes (12-3-12).

2013-12-18annual_review

Annual review — no changes (12-18-13).

2014-11-25annual_review

Annual review — no changes (11-25-14).

2014-12-04annual_review

Annual review — no changes (12-4-14).

2020-12-09annual_review

Annual review; terminology updated (physician → treating practitioner) and ICD-10 code section relabeled; recorded December 9, 2020.

2021-12-07annual_review

Annual review; 'Important Note' and NPIAP name change reflected; recorded December 7, 2021.

2022-12-06annual_review

Annual review — no changes (December 6, 2022).

2023-12-04annual_review

Annual review — no changes (December 4, 2023).

2024-12-02annual_review

Annual review — no changes (December 2, 2024).

2025-12-08annual_reviewLatest

Annual review — no changes (December 8, 2025).