Home Medical Equipment Industry Terminology

ABN (Advance Beneficiary Notice of Noncoverage)

We issued an ABN because the brace may be considered not reasonable and necessary.; Mark the claim with GA modifier when an ABN is on file.; Without a valid ABN, we can’t bill the patient if Medicare denies.

A Medicare form used to notify a beneficiary that an item or service may not be covered and that they may be financially responsible if they choose to receive it. Must be issued before delivery when coverage is uncertain.


Accreditation (DMEPOS Supplier Accreditation)

Our accreditation survey is next month.; You need accreditation before you can enroll and bill Medicare.; We’re updating policies to maintain accreditation compliance.

Certification from an approved accrediting organization (e.g., ACHC, HQAA, The Joint Commission) verifying a supplier meets Medicare’s DMEPOS quality standards. Required for Medicare billing privileges.


AHI (Apnea-Hypopnea Index)

The patient’s AHI was 32, meeting coverage criteria for CPAP.; Download shows AHI < 5 on therapy, so treatment is effective.; Coverage requires AHI ≥ 15, or 5–14 with symptoms.

A sleep metric expressing the average number of apneas and hypopneas per hour of sleep; used to determine eligibility and efficacy for PAP therapy.


Allowable (Allowable Amount)

The allowable for E0601 is $X in this locality.; Patient owes 20% coinsurance on the allowable.; Our contract discounts appear below Medicare’s allowable.

The maximum amount a payer agrees to reimburse for a specific code/item; basis for patient cost-share calculations.


AOB (Assignment of Benefits)

We need the AOB signed before submitting claims.; Without AOB, the payer will send payment to the member.; Our intake packet includes the AOB form.

Authorization from the patient allowing the payer to pay the supplier directly for covered services.


ATP (Assistive Technology Professional)

An ATP must be present for this Group 3 power chair eval.; Our ATP documented seat functions and accessories.; The payer policy mandates an ATP signature.

A credential (RESNA) indicating expertise in evaluating, selecting, and configuring complex rehab technology (CRT). Often required by payers for power wheelchair evaluations.


BiPAP (Bilevel Positive Airway Pressure)

Switching from CPAP to BiPAP improved tolerance.; BiPAP is indicated due to hypoventilation.; Verify if BiPAP requires prior authorization.

A noninvasive ventilation mode delivering two pressure levels (IPAP/EPAP) to support breathing; HCPCS E0470/E0471.


Capped Rental

E1390 oxygen is a capped rental item.; Month 10 of capped rental—ensure modifier usage is correct.; After the cap, monthly payments stop per Medicare rules.

A Medicare payment category in which certain DME items are rented monthly up to 13 months, after which title or maintenance responsibility may change per policy.


CBP (Competitive Bidding Program)

This ZIP is a non-bid rural area—use blended rates.; OTS braces are currently under CBP.; We didn’t bid that category, so we need a subcontractor.

A Medicare program that sets single payment amounts (SPAs) in selected areas/categories based on supplier bids; impacts rates and contract eligibility.


CERT (Comprehensive Error Rate Testing)

We got a CERT request for oxygen documentation.; CERT denial cited missing face-to-face notes.; Track CERT outcomes to improve documentation.

CMS audit program measuring improper payments by reviewing a sample of claims and documentation.


Clean Claim

Our clean-claim rate improved after eligibility checks.; Missing NPI prevents a clean claim.; Attach the SWO and POD to keep claims clean.

A claim that passes payer edits and contains all required data and attachments, enabling first-pass adjudication.


CMS-1500

Enter HCPCS and modifiers correctly on the CMS-1500.; Box 24E needs the correct diagnosis pointer.; We’re converting paper CMS-1500s to 837P EDI.

The standard professional claim form (paper analog of 837P) used by DMEPOS suppliers to bill most payers.


Co-insurance

Medicare pays 80%, patient coinsurance is 20%.; Collect coinsurance monthly on rental items.; Contracted plans may have different coinsurance.

The percentage of the allowable that a patient pays after any deductible (e.g., 20% for Medicare Part B).


CPAP (Continuous Positive Airway Pressure)

Schedule CPAP setup and education.; Resupply filters and masks per payer frequency.; Compliance monitoring shows adequate CPAP usage.

Positive airway pressure therapy delivering constant pressure to keep airways open during sleep; HCPCS E0601.


CRT (Complex Rehab Technology)

This is a CRT power chair with tilt and recline.; Payer requires a multi-disciplinary CRT eval.; LMN must justify each CRT accessory.

Individually configured mobility and seating systems for complex needs (e.g., Group 3 power wheelchairs, specialty seating), often requiring ATP involvement.


DME MAC (Durable Medical Equipment Medicare Administrative Contractor)

Check the DME MAC LCD for coverage criteria.; Jurisdiction rules differ—verify your DME MAC.; Use DME MAC portals for same/similar checks.

Regional Medicare contractors that process DMEPOS claims, publish LCDs, and conduct education.


DMEPOS (Durable Medical Equipment, Prosthetics, Orthotics, and Supplies)

We are enrolled as a DMEPOS supplier.; Accreditation is required for DMEPOS billing.; Our catalog spans DMEPOS respiratory and mobility.

The Medicare supplier category encompassing home medical equipment and related items billed under Part B.


DSO (Days Sales Outstanding)

Our DSO dropped from 72 to 58 days.; Denials in CRT are inflating DSO.; Front-end VOB helps keep DSO down.

A receivables metric indicating average days to collect payment; key to cash-flow management.


EOB (Explanation of Benefits)

The EOB shows a CO-50 not medically necessary denial.; Post payments per the EOB and bill coinsurance.; Review EOBs to spot underpayments.

A payer statement explaining claim adjudication, allowed amounts, patient responsibility, and denial reasons.


Face-to-Face (F2F)

Power mobility devices require a F2F exam.; Ensure oxygen F2F notes include saturation testing.; Telehealth F2F may be acceptable per policy.

A required clinical encounter between patient and prescriber documenting need; for some items it must occur within a defined timeframe prior to the order.


GA Modifier

Append GA when billing CPAP outside coverage criteria.; Without GA, you can’t shift liability to the patient.; Use GZ if no ABN exists and denial is expected.

HCPCS modifier indicating a valid ABN is on file when an item is expected to be denied as not reasonable and necessary.


HCPCS Level II

Confirm the correct HCPCS and modifiers before billing.; New braces require PDAC-verified HCPCS.; Update fee schedules by HCPCS code.

Alphanumeric codes used to describe DMEPOS items and supplies for billing (e.g., E0601, K0001).


HIPAA (Health Insurance Portability and Accountability Act)

Encrypt PAP compliance downloads to meet HIPAA.; BAAs are required with software vendors.; Submit claims via HIPAA EDI standards.

US regulations governing privacy and security of protected health information (PHI) and transaction standards.


HME (Home Medical Equipment)

We specialize in HME for COPD and OSA.; HME delivery includes setup and patient education.; HME trends show growth in remote monitoring.

Industry term for equipment and supplies used in the home to support medical care, including respiratory, mobility, and support surfaces.


Intake and Referral

Intake flagged missing SWO details.; Referral included chart notes but no F2F date.; Strong intake prevents downstream denials.

Front-end process of accepting orders: verify demographics, VOB, medical necessity, documentation, and schedule delivery.


K-Codes (HCPCS K0001–K codes)

The eval supports upgrading from K0003 to K0005.; Accessories billed with K-codes need justification.; Check same/similar for prior K0001 issuance.

Temporary/rehab-related HCPCS codes commonly used for wheelchairs and accessories (e.g., K0001 manual chair, K0823 power chair).


KX Modifier

Add KX when PAP criteria are fully documented.; Omit KX if the chart lacks qualifying oxygen test.; KX reduces risk of medical necessity denials.

HCPCS modifier used to attest that coverage criteria outlined in policy have been met and supporting documentation is on file.


LCD (Local Coverage Determination)

Follow the oxygen LCD for testing requirements.; The knee brace LCD distinguishes OTS vs custom.; Update templates when an LCD is revised.

Coverage policy published by DME MACs specifying indications, documentation, and coding for items.


LMN (Letter of Medical Necessity)

The LMN justifies tilt-in-space for pressure relief.; Payers often ask for an LMN for CRT accessories.; Attach the LMN with the prior auth request.

A clinician’s narrative detailing why an item is medically necessary, supporting the order beyond basic notes.


MA (Medicare Advantage)

MA plan requires prior auth for hospital beds.; This MA contract pays at 95% of Medicare.; Check MA formulary for PAP resupply frequencies.

Private Medicare Part C plans with their own coverage rules, prior auth processes, and fee schedules.


Medical Necessity

Denial cited lack of medical necessity evidence.; Progress notes must clearly document necessity.; LMN and F2F together support medical necessity.

Clinical justification that an item is reasonable and necessary for diagnosis or treatment per payer policy.


Medicare Fee Schedule (MFS)

Load the new MFS for January rates.; Rural areas get 50/50 blended rates for certain items.; Compare MFS to managed care contracted rates.

CMS-established payment amounts for HCPCS codes, adjusted by locality and policy (e.g., rural blends).


NCD (National Coverage Determination)

Check if an NCD exists for home oxygen.; When an NCD applies, follow it over the LCD.; No NCD—so use the local DME MAC’s LCD.

Nationwide Medicare policy that sets coverage criteria; supersedes LCDs when applicable.


NPI (National Provider Identifier)

Include the ordering physician’s NPI on the claim.; Our supplier NPI must match PECOS enrollment.; Invalid NPI caused claim rejection.

A unique 10-digit identifier for providers and suppliers used in HIPAA transactions and claims.


Oxygen Concentrator

Deliver a stationary concentrator and backup tanks.; Educate on fire safety and tubing management.; Verify qualifying oxygen test results before billing.

A device that extracts oxygen from ambient air for patients requiring supplemental oxygen; commonly E1390.


PDAC (Pricing, Data Analysis and Coding)

Check PDAC for the correct code on this brace.; Is the knee brace PDAC-verified as OTS?; PDAC coding changes effective next quarter.

CMS contractor that maintains DMECS, provides coding verification, and publishes product-specific coding guidance.


PECOS (Provider Enrollment, Chain, and Ownership System)

Claim denied—ordering physician not in PECOS.; Update address changes in PECOS promptly.; New location requires PECOS enrollment updates.

CMS system for enrolling and managing Medicare provider/supplier records; ordering/referring providers must be PECOS-enrolled.


POD (Proof of Delivery)

Attach POD to the claim to avoid denials.; Audit requested POD within 45 days.; Use photo and GPS stamps for POD verification.

Documentation showing the beneficiary received the item (e.g., signed delivery ticket, tracking info), required for payment and audits.


Prior Authorization (PA)

Power wheelchairs require PA under this MA plan.; Submit LMN, F2F notes, and codes for PA.; Delivery must wait until PA approval.

Payer pre-approval process confirming medical necessity and coverage before delivery of certain items.


RAC (Recovery Audit Contractor)

RAC requested five oxygen claims from 2023.; We’re appealing a RAC overpayment.; Improve documentation to reduce RAC risk.

CMS-contracted auditors that retrospectively review claims to identify and recoup improper payments.


RCM (Revenue Cycle Management)

RCM KPIs include DSO and denial rate.; Automation improved our first-pass yield.; RCM huddles target same/similar denials.

End-to-end processes that convert orders into cash: intake, coding, claims, posting, denials, AR follow-up.


RR/NU/UE Modifiers

Bill the hospital bed with RR for rental.; Use NU when selling a new nebulizer.; UE applies to refurbished equipment per payer rules.

HCPCS modifiers indicating rental (RR), new purchase (NU), or used purchase (UE) to define payment method and pricing.


RT/LT Modifiers

Bill two lines with RT and LT for knee braces.; RT/LT can affect allowable calculations.; Avoid duplicate denials by splitting RT/LT.

Modifiers indicating right (RT) or left (LT) side; used for bilateral items and to distinguish units.


Same or Similar

Check DME MAC portal for same/similar PAP.; Denial reason: same/similar wheelchair within 5 years.; Appeal with evidence of loss/irreparable damage.

Medicare policy denying items that duplicate active or recently provided equipment of the same or similar function.


SWO (Standard Written Order)

The SWO must describe the item and quantities.; Missing NPI makes the SWO invalid.; Obtain SWO before delivery when required.

Medicare-required order that includes beneficiary name/MBI, order date, detailed item description, quantity, treating practitioner name/NPI, and signature/date.


Telehealth

Telehealth F2F accepted for PAP by this plan.; Confirm state licensure for telehealth visits.; Use telemonitoring data for PAP adherence coaching.

Remote clinical encounters via audio/video used for certain F2F requirements and ongoing therapy management, subject to payer rules.


UDI (Unique Device Identification)

Scan the device’s UDI into the patient record.; UDI helps with recall notifications.; Include UDI when payers request serial details.

FDA system assigning a unique identifier to medical devices for tracking, recalls, and documentation.


UPIC (Unified Program Integrity Contractor)

UPIC audit requested five years of records.; Strengthen compliance to mitigate UPIC risk.; Respond to UPIC with complete documentation.

CMS integrity contractors that investigate potential fraud, waste, and abuse across Medicare/Medicaid.


Ventilator

Vent patients require 24/7 on-call support.; Submit PA with detailed settings and diagnosis.; RTs perform in-home ventilator education.

Life-support device providing mechanical ventilation in the home (e.g., E0465–E0467), with stringent coverage and documentation requirements.


Verification of Benefits (VOB)

VOB shows PA needed for hospital bed.; Document rental cap and supply frequencies from VOB.; Accurate VOB reduces downstream denials.

Upfront process confirming a patient’s eligibility, coverage limits, deductibles, coinsurance, rental/purchase rules, and pre-auth requirements.


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