ModifiedUnitedHealthcarePolicy CS032TN.Z

Durable Medical Equipment, Orthotics, Medical Supplies, and Repairs/Replacements (for Tennessee Only)

Defines medical necessity, coverage, and administrative requirements for DME, orthotics, related supplies, and repairs/replacements for Tennessee Medicaid and CoverKids members; applies to providers ordering, supplying, or billing these services.

Policy Summary

PayerUnitedHealthcare

PolicyDurable Medical Equipment, Orthotics, Medical Supplies, and Repairs/Replacements (for Tennessee Only)

Policy CodePolicy CS032TN.Z

Change TypeDefinitions and clinical evidence updated

Effective DateApr 1, 2025

Next Review Date

Key ActionSubmit physician documentation equivalent to a new device request when requesting upgrades or replacements and include objective device usage data.

SourceLink

POLICY UPDATE CHANGES

Updated definition of 'hypopnea' and refreshed Clinical Evidence and References sections; previous policy version CS032TN.Y was archived.

Removed related policy links for Mobility Devices, Patient Lifts (retired May 1, 2025), and Speech Generating Devices for Tennessee.

Updated reference link for Electrical and Ultrasonic Bone Growth Stimulators (for Tennessee Only) to reflect current policy title.

5 yearsRUL for DME

>=2 yrsVentilator age threshold

>=6 hrs/dayNPPV nightly usage (trials)

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

TennesseeState-specific rules

73–76%90-day PAP adherence

Coverage and Medical Necessity Criteria

General DME Medical Necessity

DME, related supplies, and orthotics are medically necessary when ALL of the following are met:

DME Medical Necessity Core Criteria: Consistent with the state definition of DME and/or orthotic; the item meets the plan's definition of medically necessary (refer to federal, state, or contractual requirements); ordered by a physician or by an NP, CNS, or PA acting within scope of practice; and the item is not otherwise excluded from coverage.

General DME coverage criteria

Covered when ALL of the following general conditions are met

Repairs (serviceable): Repairs, including replacement of essential accessories (hoses, tubes, mouthpieces, etc.), are covered when necessary to make the item/serviceable.

Refer to TennCare Chapter 1200-13-13 for medical necessity clinical coverage criteria.

Replacement (RUL/Irreparable): Replacement of the same or similar equipment is covered when the item is beyond its Reasonable Useful Life (default RUL = 5 years unless federal/state/contractual rules specify otherwise) and has become irreparable.RUL = 5 years

RUL does not apply to supply items necessary for effective use; exceptions handled per member benefit plan.

Upgrades (requires physician documentation): Equipment upgrades require physician documentation demonstrating a change in the member's medical condition and are treated as a new service requiring the same documentation as an initial request.

Examples: upgrade from manual to power wheelchair.

Routine wear and vendor responsibilities: Routine wear that renders equipment non-functional, with continued member need, supports replacement; vendors/manufacturers are responsible for repairs on rented items and warranty-covered purchased items.

Pediatric DME must allow documented growth adjustments (minimum +2 in seat width, +3 in seat depth).

Specific DME categories: Certain items (e.g., orthotic braces, lymphedema stockings, tracheo-esophageal and voice aid prosthetics) are considered DME and covered subject to state/contractual mandates and coding rules.

Follow PDAC/CMS and TennCare coding guidance.

Repair, Replacement, and Upgrades

Repair, replacement, and upgrades:

Repair or Replacement Covered Scenarios: Repair and replacement are covered and medically necessary in certain circumstances; documentation must support that repair is needed to make the device serviceable or that replacement is required because the device is irreparable and beyond its RUL.

Submit medical justification referencing TennCare Chapter 1200-13-13 and delivery date for RUL calculations.

Upgrade Documentation Requirement: Equipment upgrades require physician documentation demonstrating a change in the member's condition; upgrades are treated as equivalent to a new service and require the same documentation as a new request.

Requests for exceptions to RUL or warranty considerations are addressed per member benefit plan and case-by-case review.

Ventilators and Noninvasive Airway Devices

Ventilators and noninvasive airway devices (members 2 years and older):

Ventilator PAP-only Noncoverage: For members 2 years and older, ventilators are not medically necessary when used only to deliver continuous or intermittent positive airway pressure, including bi-level PAP modes (HCPCS E0470, E0471), or when ventilators deliver PAP only (e.g., certain Trilogy ventilator uses).Applies to members >= 2 years

Specific HCPCS codes called out: E0470, E0471, E0465, E0466.

Ventilator Medically Necessary Indications: Mechanical ventilators (HCPCS E0465, E0466) may be medically necessary for neuromuscular diseases, thoracic restrictive diseases, and chronic respiratory failure consequent to COPD in certain clinical scenarios; refer to InterQual Medicare ventilator criteria for specific thresholds.

See InterQual Medicare: Post Acute & DME, Ventilators NCD.

BiPAP adherence-based noncoverage: BiPAP (with or without backup rate) is considered unproven and not medically necessary for CSA and OSA when adherent use is less than 4 hours during sleep on at least 21–30 consecutive days.

NPPV/BiPAP for chronic hypercapnic COPD

Covered when ALL of the following are met (evidence supportive):

Diagnosis: Adult patient with stable chronic hypercapnic COPD and clinically significant hypercapnia (baseline PaCO2 >= 7 kPa).PaCO2 >= 7 kPa

Köhnlein et al. inclusion criteria.

Optimized medical therapy: Patient has received optimized COPD medical therapy prior to initiation of NPPV.optimized medical therapy

Intervention compared NPPV + optimized therapy versus optimized therapy alone.

Titration and target goals: NIV is titrated and targeted to reduce PaCO2 by >=20% or to achieve PaCO2 <6.5 kPa.>=20% reduction or <6.5 kPa

ASV/Servo-ventilation for CSA in heart failure

Mixed evidence; coverage restricted or requires documentation when clinician judges potential benefit:

ASV outcome concerns: ASV treats central apneas but did not improve mortality or other key outcomes in SERVE-HF for patients with heart failure with reduced ejection fraction (LVEF <=45%); exercise caution in this population.LVEF <=45% associated with no outcome benefit in SERVE-HF

Documentation when prescribing ASV: If ASV is prescribed, document the indication (e.g., persistent or treatment-emergent CSA despite CPAP), prior CPAP trial and adherence data, rationale for ASV despite heart failure concerns, and consider specialist involvement.document prior CPAP trial and downloads

Patient instruction and device download data recommended.

Therapy adherence and behavioral supports

Coverage for initial and continued PAP may require demonstration of attempts to optimize adherence:

Initial education and support: Provide education, behavioral, and supportive interventions at initiation to improve adherence and document follow-up during the initial period (e.g., within ~4 weeks).follow-up within initial period (e.g., 4 weeks)

AASM recommends education and behavioral interventions with PAP initiation.

Adherence thresholds used in literature: Adherence definitions vary; commonly used thresholds include device usage >=4 hours/night on 70% of nights over a consecutive 30-day period (or >=4 hours/night on 21–30 consecutive days) and other studies using >=3 hours/night.>=4 hours/night on 70% of nights OR >=3 hours/night in some studies

Adherence impacts continuation and coverage decisions.

Any device that is fully implanted into the body is excluded from the Durable Medical Equipment (DME) benefit. If an implanted device is provided in the course of surgical care, coverage and payment are treated as part of the surgical service rather than under DME.

Cranial remolding orthoses (helmets billed with HCPCS code S1040) are distinct from protective helmets. Protective helmets (HCPCS A8000–A8004) are considered safety devices worn to prevent head injury and are not cranial remolding devices required for active treatment.

Coverage limitations and exclusions described in this policy are subject to and may be superseded by applicable federal, state, or contractual benefit requirements. Providers and reviewers must consult the member's governing benefit documents and applicable regulatory rules for detailed exclusion and limitation guidance.

In the SERVE‑HF randomized trial of adaptive servo‑ventilation (ASV) added to guideline medical therapy for patients with central sleep apnea and heart failure with reduced ejection fraction (LVEF ≤45%), ASV effectively treated central apneas but did not improve the composite outcomes of death, lifesaving cardiovascular intervention, or unplanned hospitalization for worsening heart failure.

Related policy cross‑references were updated: references to Mobility Devices, Patient Lifts (the Patient Lifts policy was retired effective 05/01/2025), and Speech Generating Devices were removed or revised in the related policies list to reflect current policy holdings.

Ventilators that are used solely to deliver continuous or intermittent positive airway pressure, including when operated in bi‑level PAP modes, are not medically necessary for members when the device is being used only as a PAP delivery system. BiPAP/ventilator uses that do not meet the medical necessity criteria in this policy may be denied.

For COPD patients, BiPAP (noninvasive ventilation) is considered unproven and not medically necessary when the awake arterial PaCO2 is <52 mmHg, even if asleep PaCO2 criteria are met (for example asleep PaCO2 ≥55 mmHg or an asleep increase >10 mmHg for ≥10 minutes).

Continuation of BiPAP or other PAP modalities requires evidence of adequate adherence. Use of BiPAP is unsupported when objective device data show average use of 4 hours/night during sleep on at least 21 to 30 consecutive days; insufficient adherence over this monitoring period may lead to noncoverage.

Coding, Codes, and Adherence Metrics

Highlighted HCPCS Codes referenced in policyHCPCS

E0465	Trilogy mechanical ventilator (example)
E0466	Trilogy mechanical ventilator (example)
E0470	Bi-level PAP device
E0471	Bi-level PAP device
S1040	Cranial molding orthosis (cranial remolding helmet)
A8000-A8004	Protective helmets (example codes A8000–A8004 referenced)

Coding references and guidancemixed

No specific CPT/HCPCS codes listed in this excerpt

Document references HCPCS changes, PDAC/NCCI guidance and DME coding resources but does not enumerate additional exact codes in this section.

BiPAP adherence threshold — Adherent use defined as ≥4 hours during sleep on at least 21 to 30 consecutive days

Adherence thresholdAdherent use defined as ≥4 hours during sleep on at least 21 to 30 consecutive days.

Monitoring windowAssessment based on consecutive 21–30 calendar days of sleep-period device usage.

Consequence of nonadherenceBiPAP considered unproven and not medically necessary when adherence <4 hours/night over the required 21–30 day period.

Baseline PaCO2 for inclusion (Köhnlein et al.) — >= 7 kPa

Patient populationAdults with stable hypercapnic COPD; baseline PaCO2 requirement applies to trial enrollment.

Reference guidance

Provider Requirements, Prior Authorization, and Operational Notes

Billing Rule

Coding and Prior Authorization Guidance

Providers must follow established coding resources and prior authorization processes. UnitedHealthcare has adopted the National Correct Coding Initiative (NCCI) requirements and uses the PDAC (Palmetto) as a source for correct DMEPOS coding and clarification. Prior authorization requirements follow federal, state, and contractual rules and any applicable UnitedHealthcare plan or system procedures.

Follow NCCI and PDAC coding guidance for DMEPOS.
Submit prior authorization as required by the member's federal/state/contractual benefit and UnitedHealthcare systems.

Prior Authorization

Prior Authorization for Upgrades and Replacements

Requests for equipment upgrades or replacements require the same level of documentation as a new request. For upgrades due to a change in medical condition (e.g., manual to power wheelchair), the physician must provide documentation demonstrating the change in condition and needs.

Medical Necessity for Supplies, Repairs, and Specific Therapies

Medical Supplies Coverage

Supplies and items used with covered DME are covered when necessary for effective use:

Medical Supplies for DME: Supplies used with covered DME (for example, oxygen tubing or mask, batteries for power wheelchairs/prosthetics, tubing for delivery pumps) are covered when necessary for the effective use of the item/device.

Refer to TennCare Chapter 1200-13-13 for supply coverage specifics.

Repair/Replacement/Upgrade medical necessity

Medical necessity for repair, replacement, and upgrade requires:

Repair necessity: Documentation that the item is non-functional and repair is necessary to make the device serviceable.

Include vendor/manufacturer assessment and repair estimates as appropriate.

Rental, Purchase, and Warranty Rules

Equipment	Rental / Purchase Rule
General DMEPOS
Rental or purchase determined per CMS/PDAC guidance and TennCare (state/contractual) rules; UnitedHealthcare follows PDAC for correct coding and purchase/rental determinations.

Equipment	Responsibility / Rule
Rented equipment
Vendors/manufacturers are responsible for repairs, replacements, and maintenance for rented equipment.

Equipment	Rental / Purchase / Limit
General PAP devices (CPAP, APAP, BiPAP, humidifiers, interfaces)
Rental or purchase determinations follow CMS/PDAC coding guidance and applicable state/contractual rules; some plans may apply capped rental or purchase limits per benefit terms—refer to PDAC and TennCare for specifics.

Equipment	Policy guidance
PAP and home NIV (including BiPAP/NIV devices)
Policy advises consulting the member’s federal, state, or contractual benefit plan for rental vs purchase and coverage rules; no specific rental/purchase rules provided in this excerpt.

Replacement Timing and Reasonable Useful Life

Durable Medical Equipment — every 5 years (RUL baseline)

Default RUL for DMEDurable Medical Equipment: every 5 years (Reasonable Useful Lifetime baseline).

Computation basisRUL is computed from the delivery date to the member, not the equipment age.

Exceptions and suppliesRUL does not apply to supply items necessary for effective use; exceptions handled per member benefit and case-by-case review.

General DME — every 5 years

General DME RULGeneral DME: default replacement interval every 5 years (unless federal/state/contractual requirements state otherwise).

Replacement criteriaReplacement is for same or similar equipment beyond its RUL and irreparable in routine use.

Documentation and Submissions

Documentation Required

Reference TennCare Chapter 1200-13-13 and provide delivery date for RUL

Submit medical justification referencing TennCare Chapter 1200-13-13 and include the equipment delivery date so the Reasonable Useful Life (RUL) calculation can be completed.

Documentation Required

Provide new-device–level physician documentation for upgrades/replacements

When requesting upgrades or replacements that go beyond routine repair, submit physician documentation equivalent to that required for a new device to demonstrate the change in the member's condition.

Documentation Required

Provide objective usage downloads and clinical justification for therapy start/continuation

Support therapy initiation and continuation with objective usage downloads (hours/night and percentage of nights) and clinical justification including diagnosis, prior trials, and titration or follow-up notes.

Exclusions and Non-Covered Items

Fully implanted devices remain not covered under the DME benefit and, if applicable, are considered part of the surgical or medical‑surgical benefit rather than DME.

This section does not list every possible exclusion. Specific coverage exclusions and limits are governed by the member's applicable federal, state, or contractual benefit requirements; consult those authorities for complete exclusion details.

BiPAP may be deemed not covered when the provider cannot document required objective adherence (for example, <4 hours/night on the required monitoring days) or when documentation supporting escalation of therapy is lacking.

Any determinations of noncoverage rely on the member's governing benefit rules; specific exclusions not shown in this policy may apply per federal, state, or contractual requirements.

Definitions and Key Terms

Reasonable Useful Lifetime (RUL) — The standard amount of time for reasonable use of DME, set at five (5) years

Standard RUL definitionReasonable Useful Lifetime (RUL): The standard amount of time for reasonable use of DME is five (5) years.

Calculation startRUL is computed from the equipment delivery date to the member, not from manufacture or vendor date.

Supply exceptionRUL does not apply to supply items necessary for the effective use of the DME device.

Irreparable — Deterioration from day-to-day usage without a specific identifiable event, considering RUL

Irreparable definitionIrreparable: deterioration from day-to-day usage without a specific identifiable event, taking into consideration the RUL of the equipment.

Replacement implication

Background and Clinical Context

Durable medical equipment and orthotics provide supportive or assistive function to treat or manage medical conditions and restore or maintain a member's functional abilities. Medical supplies that are necessary for the safe and effective use of covered DME are included when they support the device's intended therapeutic purpose.

Policy Summary

PayerUnitedHealthcare

PolicyDurable Medical Equipment, Orthotics, Medical Supplies, and Repairs/Replacements (for Tennessee Only)

Policy CodePolicy CS032TN.Z

Change TypeDefinitions and clinical evidence updated

Effective DateApr 1, 2025

Next Review Date

Key ActionSubmit physician documentation equivalent to a new device request when requesting upgrades or replacements and include objective device usage data.

SourceLink

On This Page

<4 hours/night on 21–30 consecutive days

BiPAP COPD PaCO2-based noncoverage: For COPD patients, BiPAP is considered unproven and not medically necessary when awake arterial PaCO2 is <52 mmHg, even if asleep PaCO2 criteria are met (e.g., asleep PaCO2 >=55 mmHg for >=10 minutes or asleep increase >10 mmHg from awake baseline for >=10 minutes).awake PaCO2 <52 mmHg; asleep PaCO2 >=55 mmHg or >10 mmHg increase for >=10 minutes

Trial protocol (Köhnlein) targets.

Usage expectation: Patient instruction and expectation to use NPPV for prolonged periods (e.g., at least 6 hours/day, preferably during sleep).>=6 hours/day

Usage requirement per trial protocol.

ATS and NICE guidance reference similar PaCO2 thresholds when considering NIV for hypercapnic COPD overlap scenarios.

PaCO2 threshold for COPD NPPV inclusion — baseline PaCO2 ≥ 7 kPa or targeted reduction to < 6.5 kPa in trials

Clinical guidance alignmentNICE and ATS guidance reference PaCO2 >7.0 kPa as an indicator for considering NIV over CPAP in selected COPD/overlap patients.

Adherence definition — Usage ≥4 hours/night on 70% of nights during a consecutive 30-day period (per Pépin); other trials defined adherence differently

Pépin adherence definitionUsage ≥4 hours/night on 70% of nights during a consecutive 30-day period (per Pépin et al.).

Alternative trial definitionsOther studies/trials have used different adherence cutoffs (e.g., ≥3 hours/night or study-specific definitions).

Measurement methodAverage usage calculated over defined 30-, 60-, or 90-day periods using device download data.

Upgrades treated as equivalent to a new service — provide full new-request documentation.
Replacements require evidence the item is beyond its 5-year Reasonable Useful Life (RUL) and is irreparable, unless federal/state/contractual rules state otherwise.

Documentation Required

Prior Authorization Considerations

Prior authorization decisions must be accompanied by supporting clinical documentation when initiating PAP therapy, changing PAP modality, requesting NIV/NPPV, or otherwise altering respiratory support. Include objective device usage data and therapy download reports when applicable, and document education, troubleshooting, and attempts to improve adherence.

Provide therapy download reports and objective usage data for PAP/BiPAP/ASV requests.
Document education, troubleshooting, and interventions attempted to improve adherence.

Prior Authorization

Prior Authorization Depends on Plan Benefit Rules

Coverage and prior authorization are governed by the member's applicable federal, state, or contractual benefit plan. Providers must verify and follow those requirements; in case of conflict, federal/state/contractual requirements govern over this policy.

Check the member's federal/state/contractual benefit rules before submission.
UnitedHealthcare systems and third-party tools (e.g., InterQual) may be used to assist in administration but do not supersede contractual requirements.

Denial Risk

Ventilator/BiPAP Noncoverage Triggers

Ventilators used only to deliver PAP (including BiPAP modes HCPCS E0470 and E0471) are not considered medically necessary as DME for members age 2 and older in those contexts. Mechanical ventilators (E0465, E0466) may be medically necessary for neuromuscular disease, thoracic restrictive disease, or chronic respiratory failure in specific scenarios per InterQual/CMS guidance.

Ventilator noncoverage trigger: use only to deliver continuous or intermittent positive airway pressure (includes E0470, E0471).
Mechanical ventilators (E0465, E0466) may be covered for specific life-threatening or chronic respiratory failure indications per referenced criteria.

Denial Risk

Adherence Threshold Risk

There is insufficient evidence to support BiPAP coverage when adherence is < 4 hours per night on at least 21–30 consecutive days (insufficient adherent use). Low adherence may lead to non-coverage for certain BiPAP indications; document interventions attempted to improve adherence.

Adherence threshold risk: < 4 hours/night on 21–30 consecutive days may be considered insufficient evidence for BiPAP coverage.
Document educational, behavioral, and troubleshooting interventions and consider follow-up per guideline recommendations (e.g., 4 weeks).

Denial Risk

Benefit Conflicts May Trigger Denial

If a conflict exists between this policy and the member's federal, state, or contractual benefit terms, coverage determinations will follow the federal/state/contractual requirements.

Benefit conflicts resolved in favor of federal/state/contractual plan documents.

Documentation Required

Order and Documentation Requirements

Orders must be placed by an authorized clinician and supported by appropriate clinical documentation. Documentation should reference applicable clinical criteria hierarchy and relevant objective findings (e.g., sleep study results, blood gas data, device downloads).

Order must be by physician or authorized non-physician per state scope of practice.
Include objective clinical data (PSG, home sleep test, ABGs, device downloads) with the order.

Documentation Required

Repair and Replacement Documentation

Repair and replacement requests must include documentation demonstrating medical necessity, irreparability or that the item is beyond its 5-year Reasonable Useful Lifetime (RUL), and that routine wear has rendered the equipment non-functional. Vendors/manufacturers are responsible for repairs/replacements for rented equipment and equipment under warranty.

Provide evidence the device is irreparable or beyond 5-year RUL for replacement requests.
Document routine wear and attempts at repair; note warranty/rental status.

Documentation Required

Documentation for Upgrades, Replacements, and Pediatric DME

Physician documentation is required to support upgrades, replacements, and pediatric DME. Pediatric DME must allow for growth adjustments (minimum 2 inches seat width, 3 inches seat depth). For upgrades based on condition change, submit the same documentation as a new request.

Pediatric DME growth allowance: ≥2" seat width and ≥3" seat depth.
Upgrades require new-request-level documentation from the physician.

Note

Check Plan-Specific Requirements and Use of Third-Party Tools

Providers should verify plan-specific requirements and may expect UnitedHealthcare to apply third-party criteria (e.g., InterQual) when administering benefits. Always check the member's federal/state/contractual rules before submission.

UnitedHealthcare may use InterQual or other tools to adjudicate medical necessity.
Confirm state-specific rules (e.g., TennCare chapter references) and any contractual variances.

Note

Clinical Criteria Hierarchy

Clinical criteria and guidance will be applied in the following order of precedence when determining medical necessity: 1) federal, state, and contractual requirements; 2) UnitedHealthcare Community Plan Medical Policy; 3) InterQual CP: Durable Medical Equipment; 4) InterQual Medicare: Post Acute & Durable Medical Equipment, Ventilators NCD; 5) CMS DME MAC guidance.

Follow this hierarchy when assembling documentation and preparing prior authorization requests.

Note

Therapy Sequencing

Therapy sequencing: for many obstructive sleep apnea (OSA) cases, initiate therapy with CPAP (or APAP per AASM guidance). Consider NIV/NPPV for select COPD or obesity hypoventilation syndrome (OHS) patients per ATS/NICE guidance and after appropriate trials and reassessment. Changes in modality (e.g., CPAP to ASV/BiPAP) should be supported by clinical rationale and objective data.

Start with CPAP/APAP for routine OSA unless clinical circumstances warrant another modality.
Consider NIV/NPPV for selected chronic hypercapnic COPD or OHS patients per guideline recommendations; avoid initiating long-term NIV during acute admissions unless reassessed.

Note

Not applicable in this excerpt

Not applicable in this excerpt.

Replacement necessity (RUL/Irreparable): Documentation that the item is beyond its Reasonable Useful Life (default 5 years) and irreparable, with delivery date provided for RUL calculation.RUL = 5 years

Submit medical justification referencing TennCare Chapter 1200-13-13 and delivery date.

Upgrade necessity: Physician documentation demonstrating a change in medical condition necessitating upgraded equipment; upgrades are treated as a new request and require the same documentation.

Provide clinical rationale and functional assessment supporting the upgrade.

Pediatric considerations: For pediatric DME, document growth adjustments (minimum 2 inches in seat width and 3 inches in seat depth) when relevant to replacement or upgrade requests.+2 in width, +3 in depth

NPPV/BiPAP in hypercapnic COPD necessity

NPPV/BiPAP considered medically necessary when trial/guideline criteria are met:

Appropriate diagnosis: Patient has stable chronic hypercapnic COPD with clinically significant hypercapnia (baseline PaCO2 >= 7 kPa).PaCO2 >= 7 kPa

Köhnlein et al. inclusion criteria and ATS conditional recommendation.

Optimized therapy prior to NPPV: Patient has received optimized COPD medical therapy prior to initiation of NPPV.optimized medical therapy

Guideline and trial comparisons used optimized therapy as baseline.

Titration and objective targets: NIV should be titrated with targets to reduce PaCO2 by >=20% or to achieve PaCO2 <6.5 kPa; device settings and titration records should be documented.>=20% reduction or <6.5 kPa

Trial-based titration targets (Köhnlein).

Usage expectations and documentation: Patients should be instructed and expected to use NPPV for prolonged periods (e.g., >=6 hours/day, preferably during sleep); provide device download reports showing usage.>=6 hours/day

Objective usage data recommended to support continued coverage.

Request exceptionsRequests for exceptions to the 5-year RUL are decided case-by-case based on benefit plan and medical necessity.

Not specified in this excerpt — placeholder for device-specific RUL exceptions

Device-specific exceptionsNot specified in this excerpt — device-specific RUL exceptions are handled per federal/state/contractual rules and referenced benefit documents.

How to request exceptionSubmit medical justification and plan-specific documentation for case-by-case review (refer to member benefit rules).

Policy cross-referenceRefer to related policy sections and federal/state rules for equipment-specific guidance when available.

Not specified — placeholder

Placeholder — not specifiedNot specified in this excerpt; refer to federal, state, or contractual benefit plan documents for device-specific replacement intervals.

Use plan rulesCoverage and replacement intervals are governed by the applicable benefit plan; check before submitting requests.

Third-party toolsUnitedHealthcare may use third-party criteria (e.g., InterQual) to assist in administering benefit decisions for exceptions.

Documentation Required

Document compliance with plan-specific requirements and third‑party tool use

Document compliance with applicable federal, state, or contractual benefit plan requirements when requesting coverage for DME such as PAP devices; UnitedHealthcare may apply third‑party criteria (e.g., InterQual) in benefit administration.

Equipment deemed irreparable and beyond RUL supports coverage for replacement of same or similar equipment.

Documentation requirementProviders should document irreparability and delivery date when requesting replacement beyond RUL.

Hypopnea (PAP evaluation) — Abnormal respiratory event lasting ≥10 seconds with ≥30% airflow reduction and ≥3% desaturation or arousal

Hypopnea definition (PAP evaluation)An abnormal respiratory event lasting ≥10 seconds with ≥30% airflow reduction and ≥3% oxygen desaturation from baseline or associated with an arousal (AASM Scoring Manual, 2023).

Context of useDefinition applied for evaluation and titration decisions in PAP therapy assessments.

Policy update notePolicy updated the hypopnea definition effective 04/01/2025 (see Policy History).

hypopnea (definition updated in policy)

Updated hypopnea term notePolicy updated the hypopnea definition in the current revision (see Policy History/Revision Information).

Core definitionHypopnea remains defined per AASM criteria: ≥10 seconds duration, ≥30% airflow reduction, and ≥3% desaturation or arousal.

Use in scoringApplied for PAP therapy evaluation, AHI calculation, and titration endpoints.

ASV (Adaptive Servo-Ventilation) — A PAP mode delivering variable inspiratory support to treat central sleep apnea

ASV definitionAdaptive Servo-Ventilation (ASV): a PAP mode delivering variable inspiratory support to treat central sleep apnea.

Evidence cautionSERVE-HF showed ASV effectively treated CSA but did not improve mortality/outcomes in HFrEF (LVEF ≤45%), warranting caution and documentation when used in heart failure patients.

Documentation expectationsIf prescribed, document prior CPAP trial, adherence data, and rationale for ASV use despite heart failure concerns.

NPPV / NIV — Noninvasive positive pressure ventilation (includes BiPAP/BPAP) used in chronic hypercapnic COPD and other causes

NPPV / NIV definitionNoninvasive positive pressure ventilation (NPPV/NIV) includes BiPAP/BPAP used in chronic hypercapnic COPD and other causes of chronic respiratory failure to improve ventilation and reduce PaCO2.

Clinical trial usageTrials instructed prolonged NIV use (e.g., ≥6 hours/day) with targets to reduce PaCO2 by ≥20% or to <6.5 kPa in selected COPD patients.

Coverage considerationsUse considered medically necessary when trial/guideline criteria (including PaCO2 thresholds and optimized medical therapy) are met.