ModifiedUnitedHealthcarePolicy CS032IN.07

Durable Medical Equipment, Orthotics, Medical Supplies, and Repairs/Replacements (Indiana)

State-specific UnitedHealthcare medical policy governing coverage and medical necessity criteria for durable medical equipment (DME), orthotics, medical supplies, and repairs/replacements for Indiana members.

Policy Summary

PayerUnitedHealthcare

PolicyDurable Medical Equipment, Orthotics, Medical Supplies, and Repairs/Replacements (Indiana)

Policy CodePolicy CS032IN.07

Change TypeMaterial: guidance & coverage threshold updates

Effective DateMay 1, 2026

Next Review DateN/A

Key ActionRefer to the Indiana Health Coverage Programs Provider Reference Module for medical necessity criteria for BIPAP devices (HCPCS E0470, E0471).

SourceLink

POLICY UPDATE CHANGES

Revised list of clinical guidelines to be applied when determining medical necessity; removed reference to the InterQual® Medicare: Post Acute & Durable Medical Equipment, Ventilators NCD and added InterQual® Client Defined (Custom) criteria.

Added language indicating home mechanical ventilators are not medically necessary for individuals with stable COPD with an arterial PaCO2 of less than 52 mm Hg while awake on room air.

Added instruction to refer to the Indiana Health Coverage Programs, Provider Reference Module: Durable and Home Medical Equipment and Supplies for medical necessity clinical coverage criteria.

Added explicit documentation requirements that the patient's medical record must fully support medical necessity.

PaCO2 < 52HMV considered not medically necessary in stable COPD

Indiana

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Coverage and Medical Necessity Criteria

HMV - Stable COPD (Not Medically Necessary Threshold)

Home mechanical ventilators for individuals with stable COPD:

Not medically necessary condition: Home mechanical ventilators are not medically necessary for individuals with stable COPD who have an arterial PaCO2 of less than 52 mm Hg while awake on room air.PaCO2 < 52 mm Hg

Policy explicitly states HMV not medically necessary in this population.

Clinical guidance hierarchy for determining medical necessity

Clinical criteria and guidance sources to be applied when assessing DME/HMV requests:

Guidance hierarchy: Apply federal, state, and contractual requirements; InterQual® CP: Durable Medical Equipment (and InterQual® Client Defined - UHG when needed); UnitedHealthcare Community Plan Medical Policy; Centers for Medicare & Medicaid Services (CMS) DME MAC criteria. For Indiana-specific determinations, refer to the Indiana Health Coverage Programs, Provider Reference Module: Durable and Home Medical Equipment and Supplies.

Order of guideline application is specified in policy.

InterQual for HMV: For medical necessity clinical coverage criteria for home mechanical ventilators, use InterQual® CP: Durable Medical Equipment Home Mechanical Ventilation Devices: Invasive, Noninvasive, and Multifunction. If medical necessity cannot be determined using these criteria, use InterQual® Client Defined (Custom) CP: Durable Medical Equipment Home Mechanical Ventilation Devices - UHG.

InterQual Client Defined referenced as alternative when standard criteria are insufficient.

Medical necessity and exclusions

Coverage decisions use updated clinical guidelines and criteria; InterQual Client Defined criteria apply.

General: Coverage requires meeting InterQual Client Defined criteria (when applicable) and documentation supporting medical necessity per UnitedHealthcare policy and applicable federal, state, or contractual requirements.

See medical records documentation requirements for required record elements.

Exclusion for stable COPD: Home mechanical ventilators are not medically necessary for individuals with stable COPD with an arterial PaCO2 of less than 52 mm Hg while awake on room air.PaCO2 < 52 mm Hg

Explicit exclusion stated in policy.

This policy states that home mechanical ventilators (HMVs) are considered unproven and therefore not medically necessary for individuals with chronic stable COPD when the arterial carbon dioxide pressure (PaCO2) is less than 52 mm Hg while the patient is awake on room air. Reviewers should apply established clinical criteria sources when assessing requests, including the InterQual® CP for Durable Medical Equipment Home Mechanical Ventilation Devices and, if needed, the InterQual® Client Defined (Custom) criteria referenced in this policy.

Operational decision-making is guided by the hierarchy of clinical guidance named in policy: federal, state, and contractual requirements first, then InterQual® CP (and InterQual® Client Defined when standard criteria are insufficient), and relevant UnitedHealthcare and state (Indiana) reference modules. The policy revision that added the PaCO2 < 52 mm Hg threshold is the basis for denials or noncoverage in stable COPD when that physiologic threshold is documented.

For individuals with stable COPD, the policy explicitly states that the use of HMVs is not medically necessary when arterial PaCO2 is less than 52 mm Hg while the patient is awake on room air. Documentation of an awake, room-air PaCO2 below this threshold supports a noncoverage determination under this policy.

UnitedHealthcare considers HMVs not medically necessary for stable COPD patients who do not meet the hypercapnia threshold identified in the policy. Specifically, an awake, room-air arterial PaCO2 of 52 mm Hg or higher is the threshold used to identify patients more likely to benefit; values below this (PaCO2 < 52 mm Hg) are considered insufficient to support HMV coverage.

Emphasizing the physiologic criterion used for exclusions: if the patient with stable COPD has an arterial PaCO2 measured while awake on room air that is 52 mm Hg, the policy classifies HMVs as not medically necessary for that patient. This threshold was added in the May 1, 2026 revision and should be used by reviewers when evaluating medical necessity.

Coding and Clinical Thresholds

Referenced HCPCS codes requiring criteria lookupHCPCS

E0470	Noninvasive ventilator, bi-level pressure capability (BIPAP)
E0471	Noninvasive ventilator, continuous positive airway pressure (CPAP) — (document references BIPAP and E-codes)

PaCO2 — policy threshold summary and guidance

Policy noncoverage thresholdArterial PaCO2 < 52 mm Hg while awake on room air — HMVs are considered unproven/not medically necessary for stable COPD at this level.

Evidence guidance thresholdsSociety guidance and studies commonly use PaCO2 ≥ 52 mm Hg (and some analyses ≥ 55 mm Hg) to identify patients more likely to benefit from HMV/NIV.

Policy actionable summaryIf awake, room-air arterial PaCO2 is less than 52 mm Hg, HMV is not considered medically necessary for stable COPD; document results in the medical record.

HMV daily use — expected usage threshold

Continued use thresholdRequires usage of at least 4 hours per day on at least 70% of days each month for continued coverage of HMV/BPAP devices (per CHEST guidance).

Indication for HMV vs BPAP

Prior Authorization, Documentation, and Operational Guidance

Prior Authorization

Prior Authorization: BIPAP (E0470, E0471) — Indiana PRM

Prior authorization is required for bilevel positive airway pressure (BIPAP) devices (HCPCS codes E0470, E0471). For device-specific medical necessity criteria and authorization requirements in Indiana, refer to the Indiana Health Coverage Programs Provider Reference Module: Durable and Home Medical Equipment and Supplies.

Affected HCPCS: E0470, E0471
Refer to Indiana PRM for device-specific medical necessity criteria and prior authorization instructions

Prior Authorization

Prior Authorization and Use of InterQual

Prior authorization is required when applicable and UnitedHealthcare uses InterQual® CP: Durable Medical Equipment (and the InterQual® Client Defined (Custom) criteria when standard criteria are insufficient) to determine medical necessity. Reviewers must follow UnitedHealthcare’s prior authorization workflow and apply federal, state, and contractual requirements in addition to InterQual criteria.

Use InterQual® CP: Durable Medical Equipment and InterQual® CP: Durable Medical Equipment Home Mechanical Ventilation Devices: Invasive, Noninvasive, and Multifunction.

Clinical Evidence and Background

Long-term home noninvasive ventilation (NIV/NIPPV) for chronic hypercapnic COPD shows variable evidence across studies and guidelines. Systematic reviews and multiple society guidance documents identify benefit primarily in patients with persistent hypercapnia, with commonly used thresholds around PaCO2 ≥ 52–55 mm Hg to select patients most likely to benefit. Because evidence and guideline recommendations vary, this policy applies a conservative coverage stance: HMVs are not covered for stable COPD when awake, room-air PaCO2 is < 52 mm Hg, while broader guidance (CHEST, ATS, Canadian Thoracic Society and others) may recommend consideration of NIV for patients meeting higher hypercapnia thresholds and other clinical criteria.

Key Terms and Thresholds

Hypercapnia threshold (policy-relevant)

Policy-relevant hypercapnia thresholdPaCO2 < 52 mm Hg while awake on room air is flagged by policy as non-covered/unproven for HMV in stable COPD.

Guideline thresholds used in evidenceClinical studies and society guidance frequently use PaCO2 thresholds ≥ 52 mm Hg (some analyses ≥ 55 mm Hg) to define persistent hypercapnia for NIV consideration.

Clinical interpretationPatients with PaCO2 below the policy threshold were the subject of trials showing limited benefit; hence policy designates <52 mm Hg as not medically necessary for HMV in stable COPD.

HMV (Home Mechanical Ventilator)

DefinitionHMV (Home Mechanical Ventilator): a ventilatory device intended for use in the home setting, including invasive, noninvasive, and multifunction devices.

Terminology change

Policy Summary

PayerUnitedHealthcare

PolicyDurable Medical Equipment, Orthotics, Medical Supplies, and Repairs/Replacements (Indiana)

Policy CodePolicy CS032IN.07

Change TypeMaterial: guidance & coverage threshold updates

Effective DateMay 1, 2026

Next Review DateN/A

Key ActionRefer to the Indiana Health Coverage Programs Provider Reference Module for medical necessity criteria for BIPAP devices (HCPCS E0470, E0471).

SourceLink

On This Page

Documentation Required

Medical Records Documentation Used for Reviews

The patient’s medical record must contain documentation that fully supports the medical necessity for the requested services. Documentation may be required to assess whether the member meets clinical criteria but does not guarantee coverage.

Include relevant medical history, physical examination, and results of pertinent diagnostic tests or procedures.
Documentation must be legible, maintained in the patient’s medical record, and made available upon request.

Documentation Required

Medical Records: Required Elements and Retention

Documentation supporting medical necessity should include, at a minimum, history, exam findings, and diagnostic data relevant to the request. Maintain records in accordance with federal, state, and contractual requirements; retain and provide records upon request.

Required elements: pertinent medical history, physical exam, and diagnostic test/procedure results.
Documentation does not guarantee coverage; benefit determination is subject to applicable federal, state, and contractual requirements.