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What are the correct codes and modifiers for orthotic procedures and services?

The world of medical coding can be a complex one, and even seasoned professionals sometimes find themselves scratching their heads. For medical coding students, it's easy to get overwhelmed with the sheer volume of codes, modifiers, and rules you need to understand to accurately bill for services. One such area that requires keen attention is the coding of orthotic procedures and services. Specifically, the HCPCS Level II code L2405, which falls under the broad category of "Orthotic Procedures and services L0112-L4631 > Orthotic Additions to Knee Joints L2405-L2492".

Today, we're going to delve deep into the world of this code, and explore the myriad of modifiers that can be applied to it. The purpose of this article is to educate students in medical coding about this specific code and help them confidently navigate its nuances. It's essential to remember that the following information is merely a learning resource, provided by an expert in the field, to assist in understanding. CPT codes are the intellectual property of the American Medical Association (AMA), and they must be licensed from the AMA to ensure compliance with U.S. regulations and to use the latest version. Neglecting to do so can result in legal repercussions and financial penalties.

Understanding Code L2405

Before we delve into modifiers, it's vital to have a firm grasp on what code L2405 actually represents. L2405 is a HCPCS Level II code that describes the provision of an orthotic component – a drop lock – which is a manually adjustable locking mechanism for a knee orthosis (knee brace). Essentially, this component serves to "lock" the knee joint during the swing phase of gait (walking) preventing unnecessary movements that may cause pain or discomfort.

This code comes with its share of practical applications and variations that can be nuanced. For example, a doctor might prescribe a drop lock to a patient recovering from a knee injury to help stabilize the knee during their rehabilitation process. The patient could be recovering from a meniscus tear or even ligament damage. The drop lock would lock the knee during the swing phase (not during the stance phase), allowing the knee to bend when they are sitting down but stopping the knee from bending incorrectly during walking. This helps reduce the strain and prevent further damage to the healing knee.

Modifiers and Their Stories: Deciphering the World of Modifier Codes

Now let's move on to the fascinating world of modifiers. Modifiers are alphanumeric codes that are appended to the primary code to further refine it and provide specific information about the service performed. When it comes to orthotic procedures, modifiers can significantly affect billing accuracy.

We've compiled a set of use case stories that illustrate how modifiers work in practice, specifically when coding L2405:

Modifier 99 - Multiple Modifiers

Let's imagine this situation: A patient, let's call him Bob, presents to a physical therapist for evaluation and treatment of his knee pain. He's also being fitted for a new knee orthosis that requires a drop lock. Bob, unfortunately, also has a history of ankle instability and has previously been fitted with an ankle support. As the physical therapist, you determine that Bob needs both an ankle brace (requiring its own code) and a knee orthosis with a drop lock (requiring L2405). Because you are billing for two distinct orthotic devices, you will add modifier 99 to both codes.

The purpose of modifier 99 is to flag when more than one modifier applies to a specific service, or more accurately to a set of services, as in Bob's case. This can occur when you are billing for different services for the same patient at the same time.

You would report this as:

* L2405 + 99: for the knee brace with the drop lock * [The appropriate ankle brace code] + 99 : for the ankle brace

Think about it like this, 99 means you're adding something like a *multiple choice* answer to your billing. It tells the insurance company that your billing isn't a *yes or no* scenario but that you are actually needing multiple choices to fully describe the situation.

Modifier AV - Item Furnished in Conjunction with a Prosthetic Device

Here’s a slightly more complex situation. Imagine that your patient, let's call her Mary, has an below-knee amputation and is undergoing prosthetic rehabilitation. During this process, she needs a knee orthosis to support her residual limb as she learns to use her new prosthesis. She has been fitted for the knee orthosis and is needing to have the drop lock added to the knee orthosis.

Now, because she has an above-knee amputation, this will be seen as an orthotic being applied to a *prosthetic device*. You will want to include the modifier AV because this orthosis is an *addition to her prosthesis*. Modifier AV signifies that the orthosis is being provided "in conjunction with a prosthetic device", indicating it is designed to function alongside a prosthetic limb.

In Mary's case, the drop lock would function as part of the knee orthosis, but you are billing as though the knee orthosis was part of her prosthetic leg. The modifier AV clarifies to the insurer that this drop lock is *not* a prosthetic item in itself, but an *addition to her existing prosthetic limb.*

You would report this as:

* L2405 + AV

Think about it like this, AV is like *attaching* the billing for this drop lock to the billing of her prosthetic leg.

Modifier BP - Beneficiary Has Elected to Purchase

Let’s think about our next case: We’re looking at a patient, let's call him John, who needs a drop lock as part of a knee orthosis for a sprain. John walks in for an office visit with his physician, and the physician explains all his options for treating his knee sprain, including orthotics. The physician talks with John about purchase options and discusses how renting the orthosis could be less expensive if the orthotic is only going to be needed for a short period. After listening to the doctor’s explanation and weighing his options, John elects to purchase the knee orthosis and its necessary components, which includes a drop lock.

Since John has chosen to purchase the orthosis, we need to indicate this choice through modifier BP, signifying that the patient has "been informed of the purchase and rental options and has elected to purchase the item." Adding BP makes it clear that the insurance company is responsible for the cost of the purchase because John had been told about other available options (renting), but chose the option that required more out of pocket spending for him.

You would report this as:

* L2405 + BP

Think about it like this, BP is *letting the insurance company know that they need to pick UP the tab for the full purchase of this orthosis and its drop lock because the patient was fully informed of the other options and elected to purchase.*

Modifier BR - Beneficiary Has Elected to Rent

Think about our next patient, a high school basketball player named Ashley, who sustained a knee injury during a game. The physician decides she would benefit from a knee orthosis with a drop lock. However, the physician explains that since she's still recovering from the injury, they are recommending she rents the orthosis rather than purchasing it at this point.

Ashley agrees and will be renting the knee orthosis. The modifier BR identifies this situation. BR indicates that Ashley has been fully informed of the options for obtaining the orthosis and has chosen to rent it. It highlights the fact that the insurance will be paying for the rental rather than for the full purchase. Modifier BR clearly signals to the insurance company that the patient's intention is to rent. Modifier BR doesn't necessarily tell the insurance company how long she will rent for, just that she *has* elected to rent the knee orthosis.

You would report this as:

* L2405 + BR

Think about it like this, BR is *highlighting the difference* in billing between a purchase and a rental.

Modifier BU - Beneficiary Has Been Informed of Purchase and Rental Options But Has Not Yet Made a Decision After 30 Days

Let's look at another patient, Susan. She went into a clinic for her first evaluation on a sprained knee. The doctor recommended a knee orthosis with a drop lock, but at this point Susan needed to figure out how to pay for the orthosis. The clinic made a note that Susan had not made a decision as to whether she would be purchasing the knee orthosis or renting it. The clinic told Susan that they would give her time to make the decision, but the 30 days allowed has passed.

Now, we have to assign a modifier that will make it clear to the insurance company that there is no decision from Susan regarding purchase versus rental, but that the decision will be made in the future.

The purpose of Modifier BU is to indicate that the patient has been given the option of purchase versus rental and that Susan still has not made the decision to rent or purchase the knee orthosis with the drop lock. BU makes clear that 30 days have passed but no decision was made about which payment method would be used. The clinic is giving the patient more time.

You would report this as:

* L2405 + BU

Think about it like this, BU is *informing the insurance company of the lack of a decision* from the patient.

Modifier CR - Catastrophe/Disaster Related

Modifier CR is specifically used when services related to a catastrophe or disaster occur, meaning that the service occurred due to a major natural or man-made disaster. This includes things like earthquakes, hurricanes, and fires. The modifier isn't just about the service location. Modifier CR focuses on the reason for the patient's service needing to happen because of the disaster.

Imagine a patient, David, needing to be fitted with a drop lock in his knee orthosis. This occurred because David had a knee injury that happened when HE had to quickly evacuate his home in the midst of a hurricane.

You would report this as:

* L2405 + CR

Think about it like this, CR *clarifies that the knee brace* was needed because of the hurricane. Modifier CR will often be tied to additional services that the patient might be receiving, like treatment for injuries due to the hurricane.

Modifier EY - No Physician or Other Licensed Health Care Provider Order

Let's take a look at patient Beth, a patient who comes into the office without a written order from a licensed health care provider. She states that she believes a knee orthosis with a drop lock might be useful, but doesn’t have a medical order. The provider needs to get the order for a knee brace and then is able to provide the brace for her.

Modifier EY will be used in this situation. This modifier applies in cases when a service is performed or provided without a proper order from a physician or another healthcare professional. In Beth's case, the use of Modifier EY clarifies that the service was provided without a valid physician's order at the initial time. However, since the knee brace and its drop lock was given before the order arrived, the insurance company needs to understand this lack of order.

You would report this as:

* L2405 + EY

Think about it like this, EY signifies that a proper medical order is lacking at the start of billing. It *clarifies that the billing should proceed* *normally* because, although a medical order is still needed, the brace and its drop lock have been provided without a doctor's order yet.

Modifier GA - Waiver of Liability Statement Issued

Think about patient Mike. He has decided HE needs a knee orthosis and drop lock for a knee injury. The clinic determines that the patient's insurance company doesn't cover the service as the drop lock is considered a non-covered service by Mike's insurer. However, the clinic also knows that, under these circumstances, Mike has the right to proceed with receiving this knee brace with the drop lock. In order to protect both the clinic and Mike, a waiver of liability statement needs to be given to Mike so HE fully understands the cost that may be borne to him should the insurance deny the claim.

Modifier GA comes into play when a waiver of liability statement is provided to the patient before the service. The modifier clarifies the patient has been given a waiver statement as required by the payer's policy. In Mike's case, Modifier GA ensures that the insurance company is made aware that Mike was provided a liability statement.

You would report this as:

* L2405 + GA

Think about it like this, GA makes sure the insurance company knows a waiver statement has been issued so the patient was notified that the insurer will not likely cover this particular item.

Modifier GK - Reasonable and Necessary Item/Service Associated with a GA or GZ Modifier

Let's discuss our next case study. We have a patient, Samantha, who receives a new knee brace with a drop lock, but her insurance has deemed this item *not reasonable or necessary*. She doesn't have a lot of choices, so she decided to sign a waiver of liability, signifying she will likely need to pay for the service herself.

Modifier GK is used for services or supplies that might be *not* covered under the patient's insurance plan, but *might be related to other services or supplies that are covered*. In Samantha's case, the drop lock on the knee orthosis was considered "not medically necessary", so a GA (waiver of liability) was issued. It is possible that her initial examination to see why the knee brace was even recommended was medically necessary. Modifier GK will apply if we want to bill the insurance for other medical services, and it makes it clear to the insurance company that we've taken into consideration what services were *not* medically necessary but could be tied to the medically necessary ones.

You would report this as:

* [Appropriate medical examination code] + GK

It's important to keep in mind that the GK Modifier cannot be applied to L2405. This is because L2405 would require a GA modifier, meaning it has already been flagged for *not* being considered a medically necessary service.

Think about it like this, GK ties services that *are* considered reasonable and necessary, like an examination, to services that *aren't* reasonable and necessary, like a knee brace that the patient elected to have regardless of whether the insurance company will pay for it.

Modifier GL - Medically Unnecessary Upgrade Provided

We're going to bring in a patient named Emily. Emily needs a knee brace with a drop lock. She has requested that we add another, medically unnecessary upgrade to the knee orthosis. Since Emily requested the medically unnecessary upgrade and did *not* have a medical necessity from a licensed physician, she will be responsible for paying for that extra part.

Modifier GL clarifies when a service is not medically necessary because the patient requests an *upgrade*. In Emily's case, we are informing the insurance that the drop lock is medically necessary, but that the patient chose to have extra options added that the provider has determined *do not increase the medical necessity* for the brace. The extra additions, like a specific color or an addition of an adjustable strap, would be charged as an out of pocket expense by Emily. This is a way to separate out costs. The knee orthosis with a drop lock would be charged through the insurance plan, but anything Emily asks for that doesn't impact her medical needs (i.e., things that the provider can provide and still ensure the medical necessity for the knee brace) will need to be paid for by her.

You would report this as:

* L2405 + GL

Think about it like this, GL signifies that while some items related to the knee brace and its drop lock are covered by insurance, the extra additions to the knee orthosis aren't covered. The patient requested these upgrades and elected to have them made. This means the patient *must* pay out of pocket for these items that do not affect their health care needs.

Modifier GZ - Item or Service Expected to Be Denied

Let's introduce Daniel. Daniel has had a terrible accident. He was hit by a car and broke both his knees and an arm. The doctors told him that HE will need a knee orthosis with drop locks in both knees for both legs, to help him walk during the healing process. He has two different insurance companies, and neither will cover his needed knee braces with the drop locks. It was made clear that Daniel's insurance plan won't cover the knee braces with the drop locks and that if a claim were filed, it would likely be denied.

The Modifier GZ is used in situations when the provider expects a service to be denied, but the service is necessary for the patient's health and well-being. In Daniel's case, the Modifier GZ highlights to the insurance company that they probably won't cover the drop locks on his knees, but the service is essential to his healing. This tells the insurance company that the claim is likely to be denied but allows the billing department to still GO ahead with billing the insurance company. The doctor will need to ensure a liability statement has been provided to the patient.

You would report this as:

* L2405 + GZ * L2405 + GZ

Since the drop locks are considered medically necessary, you would want to be sure to bill for them, even though the patient was informed they might not be covered. However, since these were for both of his knees, two codes would be added to his chart.

Think about it like this, GZ *warns the insurance company that a denial* is likely, but that a service was provided anyway and billed to make sure the insurance is aware of the claim. If the claim gets denied, the provider must work with the patient to ensure they have some sort of way to pay.

Modifier KB - Beneficiary Requested Upgrade

Now, consider the patient Mark. Mark requested a specific type of knee orthosis and also a drop lock, but HE also wanted a few upgrades to his brace, such as a specific type of material that cost more money and is not necessarily medically necessary for his condition.

When patients have requested upgrades for items that aren't medically necessary, it's recommended to apply Modifier KB. In Mark's case, the Modifier KB is added because Mark decided HE wanted his knee orthosis with drop lock made with a special type of material that's more expensive. The drop lock portion of his brace was medically necessary but the specific material wasn't medically required. Modifier KB alerts the insurance company that there is a potential out of pocket payment by Mark since the patient requested and *signed a waiver of liability* for the specific kind of material in his knee brace with drop lock.

You would report this as:

* L2405 + KB

Think about it like this, KB *informs the insurance company that the patient* is responsible for the cost of the upgrade. This signals that the patient has chosen an expensive upgrade.

Modifier KH - Durable Medical Equipment, Prosthetic, Orthotics, and Supplies Initial Claim

Let's talk about Rachel. Rachel is getting her knee brace with the drop lock. The physical therapist determines this will be part of her continued recovery program. She goes to the supplier to get the knee orthosis with drop lock, and the supplier bills for the first claim. This initial claim is likely to be for a month's supply. This is called a "supply period". When an initial claim is made on a new orthotic for a new patient, Modifier KH will be added.

Modifier KH indicates this is the first claim submitted for a specific piece of equipment or supplies for a patient. The Modifier KH would apply for the knee orthosis with drop lock. The knee orthosis and its drop lock will often come with specific usage guidelines based on the medical need. The supplier would be providing the initial billing with KH as a modifier to signify that the initial supply period is covered. In many cases, the patient's insurance plan would likely set out a "supply period" – this is the period that the insurance company has determined will allow the patient to properly recover or stabilize based on their medical condition. The insurance company would determine if there is a second period that might need to be covered as well.

You would report this as:

* L2405 + KH

Think about it like this, KH lets the insurance company know this is the first bill they are getting on this particular piece of equipment, and it will be tied to the patient's current needs and their physician's evaluation for needing the brace.

Modifier KI - Durable Medical Equipment, Prosthetic, Orthotics, and Supplies, Second or Third Month Rental

Imagine a patient, Tim, who was needing to rent a knee brace with a drop lock for his recovery after surgery. The provider told him HE should rent the orthosis with drop lock for 3 months and that HE might not need it longer. Tim comes to pick UP his knee brace. The clinic has billed for the initial supply period for a month, which means they've used modifier KH. The provider knows the supplier would be responsible for billing Tim for the 2nd and 3rd months, should those months be necessary, since the insurance has likely allowed for the maximum of 3 months for renting.

Modifier KI clarifies that the billing is the second or third month rental for the same durable medical equipment, orthotic, or supply, but *not* the first month. The initial claim (the first month) is denoted with modifier KH, as in Tim's case, which indicates an initial supply period. After the initial month of billing (using modifier KH), all subsequent billing of supplies used in this specific time frame will be coded with KI. Modifier KI will signify a second or third month of usage within the initial supply period of coverage. In this example, Tim's claim should have a KH modifier on it and it is likely that subsequent bills from the supplier will be coded with KI to ensure the billing is accurate, as long as Tim is still using the knee orthosis.

You would report this as:

* L2405 + KI * L2405 + KI

If Tim had been approved for the full three months for renting, KI would be added in the 2nd month and 3rd month for this specific code, L2405.

Think about it like this, KI lets the insurance company know that this is the second or third month the patient is renting this piece of equipment. Since Tim needed the knee brace for longer than one month, the insurance is aware that they might cover the full 3 months. It also means they might have decided *not* to cover it after that 3 month timeframe.

Modifier KR - Durable Medical Equipment, Prosthetic, Orthotics, and Supplies, Rental, Partial Month

Let's say patient Kevin rented a knee orthosis with a drop lock but did not need it for the whole month. Kevin used the brace for the last 15 days of the month. Because HE rented the knee orthosis with a drop lock but only for a partial month, the supplier would need to ensure this information is documented and appropriately coded.

Modifier KR clarifies when the equipment was rented for only a portion of a calendar month, which could vary from the initial supply period determined by the insurer and based on the provider's assessment. The amount that Kevin had used the orthosis (15 days) should be stated as an explanation in the note, but KR indicates this was for a portion of the month's time period. Modifier KR lets the insurance know that this particular claim was *not* for the full calendar month.

You would report this as:

* L2405 + KR

Think about it like this, KR lets the insurance company know that this particular piece of equipment was not rented for the full 30 days (or whatever length the insurance covered). KR will be combined with information that clarifies how many days the item was used to ensure accurate payment for the time of use.

Modifier KX - Requirements Specified in the Medical Policy Have Been Met

Consider the patient Angela. Angela went to a provider and was told that she might need a knee orthosis with a drop lock for her sprained knee. Before receiving this service, she needed to be referred to the provider, be physically examined by the provider, and receive some pre-service work to see if she qualified for coverage. Since all of these things occurred, we'll need to include Modifier KX in the bill for the knee orthosis and its drop lock.

Modifier KX is added when there are very specific pre-requirements that *must* be met by a patient to receive a particular service. Modifier KX ensures the insurer is notified that Angela has met all of the prerequisites specified in their medical policy. A patient's medical policy might include certain guidelines or processes before services are rendered. These might include getting a referral from another provider, undergoing certain assessments, or obtaining authorization for the specific service before a medical professional can bill for it. In Angela's case, she had met all of the necessary criteria before her visit for the knee orthosis with drop lock.

You would report this as:

* L2405 + KX

Think about it like this, KX tells the insurance company that all of the required steps have been met before the knee orthosis and drop lock was supplied. It means the claim is compliant with the plan and can be adjudicated normally.

Modifier LL - Lease/Rental

Consider the patient William. William rents a knee brace with a drop lock every month. He decides HE will need the brace for the foreseeable future, so HE decides that, rather than continue renting the brace every month, HE would prefer to buy it.

Modifier LL is used to denote that a specific item is leased or rented *with the intent that the rentals will eventually pay for the full purchase*. This often occurs when there are predetermined rental terms and conditions where a part of the lease payment is used to make payments on the purchase, essentially allowing the patient to *pay for* the item over time through installments, and they will eventually be able to take ownership of the item.

In this situation, William is using the rental payments towards the purchase of the knee brace with a drop lock. The modifier LL highlights this type of billing situation and signals to the insurance company that part of the rental costs should be attributed to the overall purchase cost of the orthosis, with the intention of eventually leading to the patient having complete ownership.

You would report this as:

* L2405 + LL

Think about it like this, LL *lets the insurance company know that the patient is renting the item but* the rental is actually building UP credit towards a purchase. It clarifies that while the patient currently pays for rental costs, their payments contribute towards eventual ownership.

Modifier LT - Left Side

Let's talk about patient Susan. Susan has been experiencing significant pain and instability in her left knee. She seeks treatment and gets diagnosed with a torn ligament. The physician prescribes a knee brace with a drop lock to aid in recovery.

Modifier LT indicates that the service being billed was performed on the *left* side of the body. In Susan's case, we'll use Modifier LT as the knee orthosis with a drop lock is placed on the left side. Modifier LT allows for proper identification of which side of the body received the service and eliminates confusion when more than one service occurs.

You would report this as:

* L2405 + LT

Think about it like this, LT is like saying *the left side was done* when reporting billing.

Modifier MS - Six Month Maintenance and Servicing Fee

Let's talk about our patient John. John rented a knee orthosis with a drop lock from the supplier. Now that the 6-month maintenance period for the brace has arrived, John takes it back to the supplier for some maintenance work and cleaning.

The supplier can add the modifier MS if they are billing for a maintenance and servicing fee, specifically *within* that 6-month period, which would be a reasonable and necessary service to ensure the brace functions properly.

It is crucial to make note of that Modifier MS applies only to items that do not fall under the scope of *manufacturers' warranties*. Meaning that if John's brace has parts that have a manufacturer warranty, and they need to be repaired, this should *not* be billed using Modifier MS. Modifier MS would only be applicable when there are repairs for *items that are *not* covered by the manufacturer's warranty.

You would report this as:

* [appropriate repair/maintenance code for the item] + MS

It's important to note that MS should *not* be used for L2405 because L2405 *is* part of the knee orthosis. The maintenance would most likely be considered *part* of the knee orthosis and would *not* have a separate code unless there was a part needing to be repaired that did not fall under the manufacturer's warranty.

Think about it like this, MS *means* that if a repair occurs *outside* the manufacturer's warranty, you can use a maintenance code with MS. MS is a *clarifier* to show this is *not* part of the initial service/purchase.

Modifier NR - New When Rented

Consider the patient, Melissa. Melissa needs to rent a knee brace with a drop lock to help with the rehabilitation of her knee. The supplier rents the knee brace to her for the initial supply period, which might be 3 months, because it's brand new. When the 3-month rental period comes to an end, Melissa chooses to buy the brace because she wants to be able to use it after she finishes rehabilitation.

The Modifier NR highlights that the item Melissa is purchasing *was* new when it was rented to her and she's continuing with the purchase after the initial period of the rental. This means the rental was a period of "try it before you buy it." The modifier NR allows the supplier to clarify to the insurance company that Melissa's purchase *wasn't* a completely separate, new purchase but is an actual continuation from a rental, ensuring the claim is billed properly.

You would report this as:

* L2405 + NR

Think about it like this, NR tells the insurance company that a rented item that was new has now become the patient's own purchase after renting.

Modifier QJ - Services/Items Provided to a Prisoner or Patient in State or Local Custody

Consider the patient Carl. Carl is currently being held in jail. His physician determines that HE needs to receive a knee orthosis with a drop lock as HE recovers from a work-related injury, which has caused an inability for him to walk normally.

Modifier QJ comes into play in the billing of health services for individuals who are incarcerated or in a state or local custody setting. In Carl's situation, Modifier QJ would be applied because HE is receiving medical services in a detention center. The Modifier ensures that the insurance company knows that HE is not being seen as a normal outpatient patient but that there is an element of state/local custody in the scenario.

You would report this as:

* L2405 + QJ

Think about it like this, QJ indicates that a service, such as an orthosis, is being provided in a setting that is not a typical hospital, medical practice, or a clinic. Modifier QJ identifies a special case involving custody arrangements by the government, specifically if it's state or local government that has jurisdiction.

Modifier RA - Replacement of a DME, Orthotic or Prosthetic Item

Imagine a patient, Laura, who had received a knee orthosis with a drop lock for her knee injury. Unfortunately, the orthosis with drop lock was accidentally damaged beyond repair by a neighbor's pet and needs to be replaced. Laura needs to have a new orthosis and drop lock fitted by her doctor.

Modifier RA signifies that the current item is being replaced. The initial item has already been paid for by Laura, either by insurance, herself, or a combination of both. Since Laura's initial orthosis with a drop lock has been replaced, and the claim is being billed for a replacement of the prior knee orthosis with drop lock, it should include the Modifier RA.

You would report this as:

* L2405 + RA

Think about it like this, RA lets the insurance company know that a previous item was already paid for and is

Learn how to accurately code for orthotic procedures and services, including HCPCS Level II code L2405 for drop locks on knee orthoses. Discover common modifiers for this code, such as 99 for multiple services, AV for use with prosthetic devices, and BP for beneficiary purchase. Explore real-world examples and learn how AI and automation can streamline your coding processes!

What are the most common modifiers for HCPCS code L2405 (Drop Lock Knee Orthosis)?