HCPCS Code for a Front Wheeled Walker

Navigating the world of durable medical equipment (DME) billing can feel like learning a foreign language. If you are a medical coder, a healthcare provider, or a caregiver trying to secure a walking aid for a patient, you have likely stumbled into the frustrating maze of HCPCS codes. The terminology gets confusing. Do you need a rollator, a front wheeled walker, or a standard walker? Are those things the same in the eyes of Medicare? The short answer is no.

This article cuts through the technical noise. You are here because you need to understand the specific HCPCS code for a front wheeled walker. By the end of this deep dive, you will not only know the exact code but also understand the nuanced differences between similar codes, how to avoid claim rejections, and how to document medical necessity flawlessly. We will build this guide brick by brick, ensuring you leave with a complete, actionable resource.

Let’s begin by understanding the exact equipment we are talking about.

Table of Contents

Understanding the Equipment: What Is a Front Wheeled Walker?

Before we assign a code, we must agree on the definition of the device. In the medical equipment world, a visual description can save a thousand dollars in denied claims. A front wheeled walker is a specific mobility aid. It is not a standard walker, and it is not a fully rolling rollator.

The Anatomical Breakdown of a Front Wheeled Walker

Imagine a standard walker frame. It usually has four rubber tips on the bottom. The user must lift it entirely to move forward. This lifting motion requires significant upper body strength and coordination. Now, take that same frame and remove the two rubber tips at the front. Replace them with wheels. You now have a front wheeled walker.

The back legs retain their standard rubber tips or glides. This hybrid design serves a critical medical purpose. The front wheels allow the user to push the walker forward without lifting the entire frame off the ground. The rear glides provide friction, acting as a braking mechanism to prevent the walker from rolling away uncontrollably.

This design is specifically for patients who have the cognitive ability and balance to use a rolling device but lack the upper body strength or coordination required to lift a standard walker repeatedly. It is a bridge device between a pick-up walker and a full four-wheeled rollator.

Front Wheeled Walker vs. Rollator: The Critical Distinction

This is the most common point of confusion in HCPCS coding. A biller sees “wheels” and immediately jumps to a rollator code. That mistake triggers an audit. A rollator has four wheels. It usually has hand brakes, a seat, and often a basket. A rollator is designed for continuous rolling motion. The user navigates by squeezing the brakes to stop.

A front wheeled walker does not have seats or hand brakes (in most standard medical definitions, though aftermarket accessories exist). It uses the resistance of the back legs to stop the motion. The gait pattern is different, too. With a front wheeled walker, the patient tends to lift the rear legs slightly when turning, whereas a rollator swivels on four wheels.

Key Clinical Note: Coders must inspect the medical record for the term “front wheeled.” If the physician writes “rolling walker,” you must clarify if they mean “two wheels” or “four wheels.” Assuming the wrong code can lead to a fraud accusation.

The Primary HCPCS Code for a Front Wheeled Walker

We finally arrive at the heart of the matter. The billing universe relies on the Healthcare Common Procedure Coding System (HCPCS) Level II codes. These codes identify products, supplies, and services not included in CPT codes. For DME, these codes are alpha-numeric.

The established HCPCS code for a rigid, standard front wheeled walker is E0143.

However, a single code rarely tells the whole story. E0143 is a flat-rate rental code under most payer guidelines. This means you bill for the rental of the equipment, not necessarily the purchase, unless the payer specifies a lump-sum purchase option (LSPO) in your region.

Deep Dive into E0143

Let’s dissect what E0143 specifically represents in the Durable Medical Equipment Medicare Administrative Contractor (DME MAC) jurisdictions.

Code Descriptor: Walker, folding, wheeled, adjustable or fixed height.
The “Folding” Requirement: The official descriptor mentions “folding.” This implies the walker includes a hinge mechanism in the front cross-brace. If you have a rigid, non-folding front wheeled walker, you might still use E0143, but you should be aware that the statutory benefit primarily covers folding models for home use, as non-folding ones are difficult to store.
Adjustable or Fixed: The code covers both height-adjustable push buttons and fixed-height frames.

E0143 Technical Specifications for Billing

To ensure your equipment falls under E0143 and not a different code (like E0147 for heavy-duty models), verify these specs:

Weight Capacity: Standard E0143 walkers generally support a weight capacity of up to 250 to 300 pounds. If the patient exceeds this weight and requires a bariatric model, you cannot use E0143. You must move to a heavy-duty code.
Wheel Size: The front wheels are typically small, solid, and non-pneumatic. They are usually 3 to 5 inches in diameter. If the wheels are large, air-filled, or designed for all-terrain use, you might be billing incorrectly.
Frame Material: Aluminum is the most common due to its lightweight nature, usually weighing around 5 to 8 pounds.

HCPCS Code Comparison Table

The following table is your quick-reference safety net. When you feel uncertain, come back here. Compare the patient’s equipment against these parameters.

HCPCS Code	Common Name	Wheels	Key Feature	Gait Pattern	Typical Use Case
E0130	Standard Walker	0 (Glides/Tips)	Rigid frame, no wheels	Lift, step, lift	Severe balance issues, post-surgery
E0141	Standard Walker with Wheels	2 Front	Front wheels, rear glides	Push, step, drag	Weak upper body, inability to lift
E0143	Front Wheeled Walker (Folding)	2 Front	Folding mechanism, light frame	Push, step, drag	Home use, travel, mild to moderate weakness
E0144	Enclosed Walker	4 Wheels (?)	Enclosed frame, platform attachment	Push, leans inside	Severe instability, often pediatric/neuro
E0147	Heavy Duty Walker	0 or 2	Reinforced frame, high weight cap.	Lift or Push	Bariatric patients over 300 lbs
E0148	Heavy Duty Wheeled Walker	2 Front	Heavy Duty, Front Wheels	Push	Bariatric with weakness
E0149	Heavy Duty Rollator	4 Wheels	Heavy Duty, Seat, Brakes	Roll, brake	Bariatric with endurance issues

The E0141 Trap: Why It Is Not E0143

You likely noticed E0141 in the table. This code represents a “walker, rigid, wheeled, adjustable or fixed height.” Wait, that sounds almost identical to E0143. The difference is the word “rigid” versus “folding.”

In the past, E0141 was the standard for a standard walker frame that came with front wheels but did not fold flat. The distinction has blurred over the years as manufacturing has improved, and almost all front wheeled walkers now fold. Most DME MACs have consolidated the pricing for E0141 and E0143. In many jurisdictions, E0141 is a non-covered code or is mapped to the E0143 fee schedule rate. You must check your Local Coverage Determination (LCD). However, from a pure coding accuracy standpoint, E0143 is the correct code for the folding front wheeled walker most users require.

The Alternative: When the Walker Has More Features

Sometimes a physician prescribes a “front wheeled walker,” but the physical therapy evaluation reveals the patient needs something more robust. Perhaps the patient sways left and right and needs side support. This is where the enclosed walker comes in.

HCPCS Code E0144: The Enclosed Frame

Code E0144 describes a “walker, enclosed, four sided, wheeled, adjustable or fixed height.” This is a specialized, heavy piece of equipment. Picture a frame that surrounds the patient on all four sides, usually with a platform or trunk support. While technically often having four wheels, the intent is not outdoor ambulation like a rollator. It provides maximum proprioceptive feedback and prevents lateral falls.

It is critical not to confuse E0144 with a geriatric rollator. E0144 is predominantly used for neurological disorders in adults and pediatric care.

“The largest coding error we see in DME audits is the confusion between an E0143 and an E0144. The treating therapist must describe the level of trunk support required. If the patient simply needs anterior support and can maintain posture, E0144 is medically unnecessary.”

— A Medicare Review Contractor Audit Finding, paraphrased for educational context.

Modifiers: The Secret to Getting Paid

Knowing the code is half the battle. Modifiers tell the payer the story of the transaction. With front wheeled walkers, the rental versus purchase dynamic is everything.

The KX Modifier: Medical Necessity Assured

The KX modifier is your shield. Appending KX to a claim line certifies that you have documented medical necessity and that the coverage criteria within the LCD have been met. Without KX, your claim will likely auto-deny, especially for Medicare beneficiaries. You are legally attesting that the patient’s medical record holds a detailed written order, chart notes supporting the need, and that the equipment is suitable for the home environment.

The RA and RR Modifiers: Rental Dynamics

Since E0143 is typically a rental item, these modifiers are essential:

RR Modifier: You use this when billing for a rental. You bill one month at a time until the capped rental period ends (usually 13 months). After the 13th month, the supplier transfers ownership to the beneficiary, and you bill a final maintenance month.
RA Modifier: You use this for a replacement. If the patient owned the walker, but it was destroyed in an accident, lost, or irreparably damaged, you submit a replacement claim with the RA modifier and the narrative explaining the “Reason for Replacement.”

The NU and UE Modifiers: New vs. Used

DME suppliers often furnish used equipment. The modifiers inform the payer:

NU Modifier: Designates the purchase of new equipment.
UE Modifier: Designates the purchase of used equipment.

For E0143, the standard pathway is capped rental, not purchase. However, if a patient has private insurance that mandates a purchase at the onset, these modifiers become relevant.

Pricing and Reimbursement Landscape for E0143

You cannot discuss coding without discussing reimbursement. The allowed amount for E0143 varies drastically across the United States due to the Competitive Bidding Program (CBP).

The Competitive Bidding Effect

In Competitive Bidding Areas (CBAs), the price is set by the median of winning supplier bids. This often drastically reduces the allowable fee compared to historical rates in rural, non-CBA areas.

Let’s look at a hypothetical comparative snapshot. These are not the exact current fees (which you must check via the DMEPOS Fee Schedule lookup tool), but they illustrate the concept of regional variance for an E0143.

Geographic Area Scenario	Purchase Fee (Lump Sum)	Monthly Rental Fee	Note
Rural Non-CBA	Approximately $75 – $90	Approximately $12 – $16	Higher overhead for delivery accepted
Urban CBA (e.g., Miami)	Approximately $45 – $60	Approximately $7 – $10	Highly competitive, lower margins
Suburban CBA (e.g., Charlotte)	Approximately $50 – $70	Approximately $9 – $12	Mid-range bidding pool
Heavy Duty CBA (E0148)	Approximately $120 – $160	Approximately $18 – $25	Higher material cost reflected

Cost Responsibility: As of recent Medicare guidelines, if the CBP single payment amount is less than the sum of 10 rental months, the supplier must provide a purchase option to the beneficiary. If it is higher, the supplier rents for 13 months. Walkers usually fall into the 13-month rental cap. The beneficiary pays the 20% Part B coinsurance and any deductible.

Clinical Coverage Criteria: Documenting Medical Necessity

A denial is almost never about the wrong digits; it is about a missing story. The medical record must paint a clear picture of the patient’s mobility deficit.

The Physician Order and the 7-Element Rule

For a front wheeled walker to be covered, the Standard Written Order (SWO) is mandatory. This order must contain all seven required elements:

Beneficiary Name
Item of DME Ordered: The description should state “Front wheeled walker” or “E0143.” Avoid vague terms like “walking device.”
Prescribing Practitioner Signature: Must be a treating physician or qualified Non-Physician Practitioner (NPP).
Signature Date: The order must be dated before delivery.
Face-to-Face Encounter Date: The SWO must indicate the date of the face-to-face visit that supports the need.
Diagnosis Code: The ICD-10 code supporting the need (e.g., M62.81 for generalized muscle weakness, R26.2 for difficulty walking, I69.351 for hemiplegia following cerebral infarction).
Physician NPI Number.

The Physical Therapy Evaluation

If a physical therapist evaluates the patient, this documentation is pure gold for an auditor. The notes should specifically justify why a front wheeled walker is required over a standard walker (E0130).

Why not a Standard Walker? “Patient demonstrates 3-/5 bilateral upper extremity strength. Inability to repeatedly lift a standard walker due to rotator cuff impingement syndrome. The push-pull mechanism of a front wheeled walker (E0143) allows successful ambulation without shoulder pain.”
Why not a Rollator (K0001)? “Patient demonstrates poor trunk control and impulsive braking attempts. A fully rolling rollator poses a fall risk due to the lack of posterior friction. The posterior glide tips of a front wheeled walker provide necessary intrinsic braking.”

Without this specific rationale, the payer assumes the cheapest code (E0130) is sufficient, and they deny the up-coded E0143.

The Payer-Specific Maze: Medicare, Medicaid, and Commercial

Your coding must pivot depending on the insurance card in front of you.

Medicare Part B Guidelines

We have focused heavily on Medicare because it sets the standard. The key LCD is usually titled “Ambulatory Assist Devices.” Medicare considers a front wheeled walker medically necessary if:

The patient can bear weight on the lower extremities but requires support for balance or fatigue.
The patient can independently propel the device and operate the safety features.
The walker is needed for movement within the home (the “in the home” rule). If the patient only needs it for long walks outside or at church, Medicare will not pay.

State Medicaid Nuances

Medicaid programs frequently carve out their own rules. Some state Medicaid agencies treat E0143 as a straight purchase item, bypassing the capped rental model. Others require a Prior Authorization (PA) stamped by a specific state department before the supplier even thinks about delivering. Never assume Medicare rules apply to Medicaid. Look up the state’s DME fee schedule manual. Often, it is a flat fee with no cap rental.

Commercial Payers and the “Rolling Walker” Tangle

Anthem, UnitedHealthcare, Aetna, and other commercial plans often have medical policies that group E0143 and E0141 together. Some strictly define “medically necessary” to exclude E0143 if a standard walker suffices. The trick with commercial payers is checking the Preferred Drug/DME List. Some plans have a specific contract with a manufacturer and require a specific product SKU mapped to E0143.

Insider Tip: When calling a commercial payer for verification, do not ask “Does the plan cover walkers?” Ask specifically, “Does the plan cover HCPCS E0143? Is there a contracted rate? Do you require a rent-to-purchase conversion?”

Real-World Scenarios: Applying the Code Correctly

Theory is great, but coding happens in messy, real-world clinics. Let’s run through some scenarios to solidify your understanding.

Scenario 1: The Stroke Patient
A 68-year-old male recovering from a left hemisphere stroke presents with right-sided weakness. He can stand but cannot lift his left leg high enough to clear a standard walker step. His arm strength is 4-/5.

Therapist’s Recommendation: Walk with a front wheeled walker to allow a reciprocal gait without lifting.
Your Code: E0143 with KX modifier.
Primary Diagnosis: I69.354 (Hemiplegia and hemiparesis following cerebral infarction affecting left non-dominant side).

Scenario 2: The Bariatric Patient
A 42-year-old female with a BMI of 55 and severe osteoarthritis in both knees needs a walking aid. Her weight is 370 pounds.

Analysis: Standard E0143 has a weight limit of 300 lbs. Dispensing E0143 could cause the frame to buckle, leading to injury and a lawsuit.
Your Code: E0148 (Heavy duty, wheeled, adjustable or fixed height walker). This is the bariatric version of the front wheeled walker.
Note: You need a statement in the medical record that standard equipment is unsuitable due to weight.

Scenario 3: The Equipment Mismatch
The supplier delivers a four-wheeled rollator with a seat and hand brakes. The physician’s order clearly says “front wheeled walker.”

Coding Action: Do not bill E0143. You cannot bill for an item you did not provide. If you bill E0143, you are committing a false claim. You must return the equipment and deliver the correct one, or get a revised order for a rollator (E0149 for heavy duty, or K0001/K0002 for standard rollators).

Audit Triggers and How to Avoid Them

The HCPCS code E0143 has been on the radar of the Office of Inspector General (OIG) because of high utilization. Certain patterns scream “audit me.”

Trigger 1: Utilization Beyond Medical Need

Medicare covers one walker every five years. If you bill an E0143 on March 1 and the patient’s history shows a K0001 (standard wheelchair) delivery on January 1, you might get a denial unless you document a significant change in condition. The patient must have a progressing condition, not just a desire for a different “flavor” of equipment.

Trigger 2: The “Convenience” Walker

The physician’s note states: “Patient requests walker to walk the dog in the park.” Denial is certain. The durable medical equipment benefit covers items necessary inside the home. Mobility for outdoor exercise is a convenience item, not a medical necessity under the standard benefit.

Trigger 3: No Face-to-Face Encounter

Before prescribing the walker, a physician or NPP must see the patient. The SWO date must be on or before the delivery date. If a supplier delivers a walker on April 10, but the face-to-face visit was on April 15, the entire claim is invalid.

Pediatric and Specialty Use of Front Wheeled Walkers

The E0143 code is mostly seen in the geriatric and post-surgical populations, but pediatrics requires careful consideration. A standard adult walker, even adjustable, often does not fit a toddler. However, HCPCS does not strictly distinguish by age for this code; it distinguishes by function.

If a pediatric patient has a folding, front-wheeled walker that fits the code descriptor, you bill E0143. However, many children require posterior walkers (walkers they pull behind them for better posture). A posterior walker that folds and has front wheels? That is still E0143 structurally, but the medical need for posterior configuration must be in the notes. There is no distinct E-code for “posterior versus anterior.” The coding distinction rests on the frame rigidity and wheel placement. The specialty fit is documented in the clinical narrative, not the code.

How to Write an Irrefutable Medical Necessity Narrative

To wrap up the practical billing section, here is a template for a narrative that supports E0143. You can adapt this for Letters of Medical Necessity (LMN).

*”The patient, [Name], presents with [Diagnosis] resulting in impaired functional mobility. Clinical evaluation reveals a gait characterized by [Gait description]. The patient’s upper extremity strength was assessed at [Grade/5]. A standard walker (E0130) is contraindicated due to the patient’s inability to [Lift the frame safely/repeatedly] secondary to [Pain/Weakness]. A fully rolling rollator (K0001) is contraindicated due to [Lack of posterior braking/Impulsivity/High fall risk]. Therefore, a front wheeled walker (E0143) is the least costly, medically necessary alternative that provides anterior stability while allowing a safe, reciprocating gait pattern within the home without lifting the device off the ground.”*

That paragraph contains the keywords “least costly alternative,” “contraindicated,” and “within the home.” Those are the phrases reviewers look for.

Technological Advancements: Smart Walkers and Accessories

The world of mobility aids is changing. We see the integration of “smart” features. Laser lights are being projected onto the floor by front wheeled walkers to cue freezing gait in Parkinson’s patients. Does this change the HCPCS code?

No. The base code remains E0143. The laser or sensor is considered an accessory or an upgrade feature. Medicare does not cover the upgrade cost. The supplier bills E0143 to Medicare at the allowable rate. The supplier may then bill the beneficiary for the non-covered laser feature on an Advance Beneficiary Notice of Noncoverage (ABN), provided the beneficiary signs it agreeing to pay out of pocket for the specific upgrade. You must not hide the cost of the upgrade in the base code.

The International Perspective: ICD-10 Codes That Support E0143

Your claim is a sandwich. E0143 is the meat, but the ICD-10 code is the bread holding it together. Here is a list of common diagnosis codes that support the medical necessity of a front wheeled walker:

R26.2: Difficulty in walking, not elsewhere classified. (Use with caution; more specific is better).
M62.81: Muscle weakness (generalized).
I69.354: Hemiplegia and hemiparesis following cerebral infarction affecting left non-dominant side.
M16.12: Unilateral primary osteoarthritis, left hip.
M17.11: Unilateral primary osteoarthritis, right knee.
G35: Multiple sclerosis.
G20: Parkinson’s disease.
T84.84XA: Pain due to internal prosthetic devices, implants and grafts, initial encounter. (For patients after joint replacement surgery who have post-operative pain and weakness limiting lift).
S72.142A: Displaced intertrochanteric fracture of left femur, initial encounter for closed fracture. (Non-weight bearing or partial weight bearing phase).

When these ICD-10 codes populate the claim with the E0143 HCPCS, the payer’s software can validate the “medical match.”

Step-by-Step: From Prescription to Paid Claim

Let’s summarize the workflow to ensure nothing falls through the cracks. Use this as a checklist with every patient file.

Intake: Verify insurance benefits. Ask specifically, “Is HCPCS E0143 a covered rental? What is the patient’s cost share?”
Prescription: Receive the detailed order. Scan for the 7 elements. If the script says “rollator,” stop. Do not pass go. Call the doctor.
Pre-Delivery Assessment: Does the patient’s weight, height, and home environment support E0143?
Delivery: Deliver the correct equipment. Train the patient. Have them demonstrate safe use. Document this teaching.
Claim Submission:
- Box 19/Reserved for Local Use: Narrative if needed (e.g., “Patient cannot lift standard walker”).
- POS: 12 (Home).
- HCPCS: E0143.
- Modifier: RR, KX, (NU or UE as needed).
- Diagnosis Pointer: Point to the specific, covered ICD-10.
Monthly Rental Billing: Bill months 1 through 13. Keep track of the 5-year Reasonable Useful Lifetime (RUL).
Transfer of Ownership: Month 14, inform patient they own it. Stop rental billing.

Common Denial Codes and Solutions

Even with perfect coding, claims fail. Here are the most common denial codes tied to E0143 and how to fix them.

CO-50 (Not Medically Necessary): Your KX modifier was missing or the documentation didn’t justify the front wheels. Fix: Submit a redetermination with the PT evaluation showing why lifting was impossible.
CO-18 (Duplicate Service): You billed monthly rental, but the system thinks the patient already owns one. Fix: Check Common Working File (CWF). See if a previous supplier billed for a purchase (LSPO) 3 years ago.
CO-16 (Missing Information): The 7-element order is incomplete. Fix: Get a revised SWO from the physician. The signature date must be retrospective to the delivery date.
CO-151 (Frequency Limitation): You billed E0143, but CWF shows an E0143 paid 3 years ago. The five-year RUL has not expired. Fix: If you can prove the old one was destroyed, submit RA modifier with proof of loss.

Storing and Maintaining Billing Knowledge

The DME MACs update their LCDs frequently. The HCPCS code E0143 is stable, but the coverage guidelines shift. Bookmark the PDAC (Pricing, Data Analysis, and Coding) contractor website. This is the entity that performs HCPCS coding verification on products. Before buying a new brand of walkers from a manufacturer, verify on the PDAC website that the specific product code maps to E0143. If a manufacturer misclassifies a rollator as E0143, and you take their word for it, you are responsible for the false claim. The PDAC product classification list is the final authority.

The Human Element: The Patient’s Experience

Beyond the technicalities of the HCPCS code for a front wheeled walker, this code represents a turning point in a person’s life. It represents regained independence. When a patient can finally walk from their bedroom to the kitchen safely because the front wheels glide over the threshold, the coding becomes meaningful.

When you get the coding right, the patient faces no delays. The equipment arrives on time. There are no surprise bills or accusations of fraud down the line. Your diligence in distinguishing E0143 from E0141 or E0130 directly translates to patient safety. A patient who receives a standard walker due to a coding error may fall trying to lift it. The HCPCS code is the first domino in a chain of clinical safety events.

Wrapping Up the Billing Cycle: Maintenance and Repairs

After the 13-month rental cap, the patient owns the walker. But what if the front wheels snap off in month 14?

Owner-Owned Equipment: The patient is responsible for repairs. Medicare has limited coverage for labor for repairs on owner-owned DME. There is a repair code system, but you generally bill for the actual labor time using specific service HCPCS codes (like K0739 for repair labor), not a new E0143.
Warranty: The manufacturer’s warranty often covers the first year. Navigate this properly. You should not charge Medicare for a repair if the manufacturer covers it under warranty.

Conclusion

Mastering the HCPCS code for a front wheeled walker requires more than memorizing E0143. It demands an understanding of the patient’s gait, the difference between a two-wheeled and four-wheeled device, and the critical role of the KX modifier. By distinguishing E0143 from similar codes like E0130, E0141, and E0144, and by rigorously documenting medical necessity, you ensure compliance with Medicare and commercial payers. The proper use of this code ultimately safeguards the supplier from audits and delivers the right mobility aid to the patient efficiently.

Frequently Asked Questions (FAQ)

Q: Is E0143 for a rollator?
A: No. Rollators have four wheels, seats, and hand brakes. They are usually coded K0001 (standard) or E0149 (heavy duty). E0143 is specifically for a folding walker with only two front wheels and rear glide tips.

Q: Can I bill E0143 if the walker has a seat attachment?
A: No. If the walker comes from the manufacturer with a seat, it is likely a rollator. If a patient buys a seat as an aftermarket accessory for their E0143, the base code does not change, but the seat is usually a non-covered convenience item.

Q: How often will Medicare pay for a replacement E0143?
A: Medicare considers the Reasonable Useful Lifetime (RUL) to be five years. You cannot routinely bill E0143 again within five years of the date the patient obtained ownership unless the equipment is lost, stolen, or irreparably damaged beyond the warranty.

Q: What is the difference between E0143 and E0148?
A: E0143 is a standard-duty folding front wheeled walker (usually up to 300 lbs capacity). E0148 is the heavy-duty, bariatric version of the front wheeled walker, designed for patients over 300 pounds.

Q: Do I need a modifier for the E0143 rental claim?
A: Yes. You need the RR modifier (rental) and, critically, the KX modifier to certify that you are meeting the medical necessity coverage criteria and have the documentation on file.

Additional Resource:
For the official, most current coding verification on whether a specific manufacturer’s device truly qualifies for HCPCS E0143, visit the PDAC DME Coding System (DMECS) Search Tool:
PDAC DMECS Product Classification Search