AI and GPT: The Future of Medical Coding and Billing Automation Hey, fellow healthcare warriors! We all know the struggle: mountains of paperwork, endless coding, and the constant threat of audits looming over us. But fear not, because AI and automation are here to save the day! Just imagine: AI sifting through mountains of patient data, automating tedious tasks like claim submission, and predicting potential coding errors before they happen. Sounds pretty amazing, right? Now, let's dive into how AI and automation are changing the medical coding landscape. And, to kick things off, tell me a joke about medical coding! What did the medical coder say to the EKG? "Don't worry, I got this!"

What is the correct code for surgical procedures on the diaphragm that are not listed in the CPT manual? (CPT code 39599)

Welcome, aspiring medical coders! Today, we'll delve into the world of CPT codes, specifically exploring CPT code 39599, "Unlisted procedure, diaphragm." As a medical coder, understanding the intricacies of CPT codes is crucial for accurate billing and claim processing. But let's make one thing clear: the information in this article is for informational purposes only. CPT codes are proprietary and owned by the American Medical Association (AMA). You MUST purchase a license from the AMA to legally use these codes in your practice. Failing to do so can lead to legal repercussions, including fines and even the revocation of your coding credentials. Make sure you are always using the latest edition of the CPT manual, as codes and their descriptions are regularly updated. Always ensure your practice remains compliant by keeping your knowledge current and by acquiring the necessary license from the AMA!

Now, let's dive into the code and explore why we use it! Imagine a scenario where a patient arrives with a diaphragmatic hernia. After a comprehensive examination, the surgeon decides that the repair can't be performed with any existing CPT codes in the manual. This is where code 39599 comes in, serving as a lifeline for medical coding in situations where no specific code adequately describes the procedure. So, we can utilize this code to report this complex surgical procedure.

Unlisted Procedure Codes – Your Essential Toolkit for Accurate Billing

You may encounter numerous situations where a particular procedure might not have a dedicated CPT code. That's where the unlisted procedure codes come into play, acting as the fallback for those intricate and unique situations. In the context of our example, CPT code 39599 provides a robust solution for such scenarios, offering a way to capture the complexities and variations of surgical interventions that can't be categorized using traditional CPT codes.

Case Study: An Intricate Repair of the Diaphragm

Here's a hypothetical case: a patient arrives at the emergency department after sustaining severe trauma that has resulted in a significant diaphragmatic tear. This is not a typical repair. Due to the patient's medical history and the complexity of the injury, the surgeon must take an unconventional approach for repair, involving multiple layers of suture materials and specialized techniques. To accurately capture this procedure for billing and claim processing, CPT code 39599 becomes indispensable. This code provides a valuable tool for reflecting the complexity and uniqueness of this repair while complying with proper billing procedures.

Understanding how to use this unlisted procedure code effectively is critical for medical coders working in various specialties. Coding in surgery requires particular attention to detail, and recognizing when a unique scenario warrants an unlisted code like 39599 is essential.

Reporting an Unlisted Procedure

Medical coders play a crucial role in providing clear and accurate documentation. But remember that, when using an unlisted code, reporting this procedure is more than simply using a single code. It demands careful communication between the medical coder and the provider, as well as strong documentation in the medical record. Documentation of an unlisted code involves the following:

Complete clinical information.

Detailed description of the procedure.

A comparison to similar procedures already represented in the CPT manual.

This helps to ensure accurate and fair reimbursement for the procedure. As a medical coder, it is crucial to thoroughly understand the regulations surrounding unlisted codes and to be able to explain your rationale for using them.

Modifiers

In addition to the CPT codes themselves, modifiers are key tools in the medical coder's toolbox. They provide a way to add specific details about a procedure, altering its payment and potentially affecting reimbursement. Modifiers are crucial for ensuring accurate billing and, in turn, facilitating the correct compensation for the services provided.

It's important to remember that modifiers don't replace or change a procedure code. Instead, they provide additional details about the circumstances surrounding that procedure. They act as a refinement tool, allowing medical coders to capture variations in the manner of service provision, further enhancing the accuracy of billing practices.

Modifier 51: Multiple Procedures

Case Study: Patient With Multiple Diaphragm Procedures

Imagine a scenario where a patient undergoes a diaphragmatic repair in the hospital. However, after completing the initial repair, the surgeon identifies another unrelated diaphragmatic issue, requiring an additional procedure. In this situation, Modifier 51 comes into play. It is used to indicate that multiple surgical procedures were performed on the same patient during the same operative session, even if they involve different codes, This is necessary to appropriately reflect the volume of services provided during that single visit.

Here is an example of how a coder would utilize the modifier 51. For this example, the primary procedure, involving a surgical procedure on the diaphragm, is documented using a code with a description of repair, the code 39599, "Unlisted procedure, diaphragm." Then, during the same operative session, a second procedure related to a diaphragmatic rupture required additional intervention, coded separately as 39599 with a Modifier 51 attached to indicate the performance of two procedures during the same surgery.

Communication Between Healthcare Provider and Coder

The provider and the coder must ensure that they are communicating effectively regarding the number of procedures that are performed in a single operative session. It is critical for accurate billing. Here's what you can say: PROVIDER: "During the operation on the diaphragm, I needed to perform a second procedure, related to a diaphragmatic rupture. You'll need to include a separate CPT code for that procedure with a modifier 51 to indicate the additional work." CODER: "Thank you! I understand that you performed a second procedure. I'll add a modifier 51 to the second CPT code."

Documentation: Ensuring a Clear Paper Trail

Clear, detailed documentation of multiple procedures is crucial. It will assist with a smooth billing process. Here's how you can document the procedures: SURGICAL NOTE: "Procedure: Diaphragmatic repair. Code: 39599. Procedure: Diaphragmatic rupture repair. Code: 39599, Modifier 51."

When to Use Modifier 51

Remember, Modifier 51 is designed to reflect multiple distinct surgical procedures performed within the same operative session, not to describe separate procedures on the same organ or body part performed on different dates. In the event of multiple distinct procedures, proper modifier usage ensures accurate coding, potentially avoiding claims denials and subsequent financial setbacks.

Modifier 53: Discontinued Procedure

Case Study: A Surgical Halt

Think about this: a patient arrives for a complex diaphragmatic procedure, but unforeseen circumstances halt the surgery before it is completed. Perhaps the patient develops a sudden complication during the surgery that prevents the surgeon from finishing. This requires a careful approach for medical coding to ensure that the procedure is documented accurately. Modifier 53 "Discontinued Procedure" is employed in this type of situation to accurately report the extent of the surgery, capturing the work performed prior to the interruption.

How the Coder Can Explain It

Modifier 53 is particularly important for capturing those procedures that were initiated but not fully completed. Let's walk through a potential conversation between a coder and the provider: PROVIDER: "During the patient's diaphragmatic repair, a significant complication arose that prevented me from completing the procedure. We were able to partially address the diaphragm before the surgery had to be halted." CODER: "I understand. We need to accurately represent the portion of the procedure that was completed. In this case, Modifier 53 will reflect the portion of the surgical repair that was carried out before it was halted. I'll also ensure that all the necessary documentation is attached."

Importance of Accurate Documentation

Precise documentation plays a crucial role in effectively applying Modifier 53. Documentation must provide detailed information about the planned procedure, the specific reasons why it was discontinued, and the actual work completed prior to the interruption.

How to Communicate With the Surgeon

Clear communication is essential for understanding the nature of the discontinued procedure. When coding for a discontinued procedure, coders must engage with surgeons and review the medical documentation for a complete picture of the surgical experience. This includes discussing the exact nature of the complication, the procedures performed, and the rationale for halting the surgery. CODER: "I understand the surgery was halted. Can you explain what portions of the procedure were already completed, and can you clarify the reason for the surgical stop? I want to be sure that the CPT code we choose to report accurately reflects the work completed and also accounts for the discontinuation using Modifier 53." SURGEON: "The procedure was partially completed before the complication arose. The portion of the repair that had already been performed was successful and, as a result, I decided to halt the procedure for the safety of the patient. It's essential that we capture that work, which can be achieved by using Modifier 53."

Accurate documentation and meticulous communication are fundamental to ensuring appropriate reimbursement and compliance with medical coding guidelines.

Modifier 62: Two Surgeons

Case Study: A Complex Diaphragm Case

Now imagine this: a patient arrives for a challenging diaphragmatic surgery, requiring the skills and expertise of multiple surgeons to ensure the procedure's success. This is where Modifier 62 shines! It is used to indicate the participation of two surgeons during a surgical procedure. In these circumstances, Modifier 62 provides a mechanism for billing appropriately, recognizing the combined efforts of both surgical professionals.

Understanding the Collaboration

Remember, a significant procedure with two or more surgeons present typically signifies a procedure of substantial complexity, requiring a multi-faceted approach and specialized expertise from multiple surgical professionals. Modifier 62 is not about billing for every surgeon; it's about indicating the collaboration of multiple surgical practitioners.

Communication between Coders and Surgeons

Here is what that communication may look like. CODER: "I understand that two surgeons were involved in the procedure. What roles did they play in the surgery, and which surgeon is the primary one to be billed?" SURGEON: "I performed the primary surgical repair, but Dr. Smith provided assistance with the complex portions of the procedure that require expertise with laparoscopic instruments. Dr. Smith played an integral role in the success of the operation, and both of US should be documented and accounted for in the coding."

Documentation: Capturing Surgical Collaboration

Documentation needs to be comprehensive and reflect the roles of each surgeon. A common approach is to include statements that detail each surgeon's role within the surgical note. This clarity ensures that the reimbursement accurately reflects the surgical team's efforts. For example, you might include a note like this: SURGICAL NOTE: "Primary surgeon: Dr. Jones. Assisting surgeon: Dr. Smith. Dr. Smith's participation involved laparoscopic suture closure of the diaphragmatic tear. Dr. Smith's role was deemed essential to the successful completion of the repair."

It is critical for the coder to understand the circumstances around using Modifier 62 to make sure that payment reflects the contributions of both surgeons while adhering to local regulations.

When Should You Use Modifier 62?

Modifier 62 applies to situations where two surgeons are actively participating in a surgical procedure, not when one surgeon assists another, or if a surgeon's presence is merely to "oversee" a portion of a procedure performed by another surgeon. Be mindful of the differences, as they are important in determining when Modifier 62 is appropriate. This practice will result in accurate reimbursement and coding adherence.

Additional Considerations

When utilizing Modifier 62, keep in mind that individual payers may have their own billing guidelines, such as restrictions on the number of surgeons billable for a single procedure. Understanding payer guidelines is crucial, especially as payer requirements for using Modifier 62 may vary. For Example, some payer policies might only allow payment for the primary surgeon when a modifier 62 is added. Therefore, it's critical for medical coders to have a robust grasp of the policies in their specific healthcare setting.

Modifier 66: Surgical Team

Case Study: The Teamwork of Surgeons

Now let's picture this: a patient is undergoing a highly specialized and technically challenging diaphragmatic reconstruction. In a situation like this, it's not uncommon for the surgical team to encompass more than two individuals, including specialized surgical assistants and trained nurses. To capture this unique setup within medical coding, Modifier 66, "Surgical Team," becomes invaluable.

When To Use This Modifier

Modifier 66 is often used for complicated procedures requiring the concerted efforts of a group of surgeons. In these situations, the primary surgeon assumes the primary role, while other team members play complementary and vital roles. Think of the contributions of each member of this surgical team as building blocks, each adding its unique expertise toward a common goal.

What Does Documentation Entail?

It's vital to ensure that all members of the surgical team are clearly identified, along with the nature of their participation, within the patient's medical documentation. SURGICAL NOTE: "Procedure: Diaphragmatic reconstruction. Surgeons: Dr. Jones, Dr. Smith, and RN, Sue Smith. The procedure required complex laparoscopic suture closure of the diaphragmatic tear. Dr. Smith provided expert assistance and technical support during the laparoscopic stages of the reconstruction. RN, Sue Smith, was crucial for providing continuous patient care and for maintaining the flow of the surgical team."

Communication is Essential

For the coder, clear communication with the provider is crucial for the application of Modifier 66: CODER: "I see from the record that Dr. Smith, as well as Dr. Jones and RN, Sue Smith, were part of this patient's surgical team. Please give me further detail regarding their contributions and how they assisted with this diaphragmatic reconstruction. What kind of roles did each play during the surgical process? SURGEON: "Dr. Jones performed the primary diaphragmatic reconstruction and Dr. Smith played a key role with assisting in the laparoscopic suture closure, along with RN Sue Smith who ensured patient safety and provided vital support to both Dr. Jones and Dr. Smith throughout the procedure. They all were critical for a successful outcome of the surgical procedure."

Accurate and thorough documentation will provide the support for appropriate billing using Modifier 66. It provides essential insights into the team effort and the collective skills required for the diaphragmatic reconstruction. It highlights the unique combination of expertise involved. As a medical coder, understanding the criteria for the use of Modifier 66 and communicating with the provider is crucial for accurate reporting. Always ensure that your practice is current with local, regional, and national coding regulations.

Example: A Scenario Requiring Modifier 66

Let's imagine another complex case: A patient with a long history of diaphragmatic weakness undergoes a lengthy and delicate procedure that requires intricate repairs involving both open and laparoscopic techniques. The surgeons choose a combination of approaches for this difficult repair. The surgical team may include two primary surgeons, a surgical assistant with a specialty in laparoscopic techniques, and one or two nurses with specific surgical skills. It’s in situations like these that Modifier 66 becomes invaluable.

Modifier 78: Unplanned Return to the Operating/Procedure Room by the Same Physician or Other Qualified Health Care Professional Following Initial Procedure for a Related Procedure During the Postoperative Period

Case Study: Unexpected Return

Imagine this: a patient has recently undergone a successful diaphragmatic repair. They're recovering well, but then, complications arise during the postoperative period, leading to an unexpected return to the operating room. The complication may be related to the initial surgery. The patient experiences unforeseen bleeding from the repair site, prompting an unplanned return to the OR to address the issue. This situation requires the use of Modifier 78.

This modifier is designed to indicate that the patient was readmitted to the operating room by the same physician who performed the initial surgery or another qualified healthcare professional to address complications that arose during the postoperative period.

Communicating with the Surgeon

When coding for a situation like this, the medical coder should seek clear communication from the provider to gain complete insight. CODER: " I see in the chart that the patient had to return to the operating room after the initial diaphragmatic repair. Could you please give me more details about this unexpected readmission? Was the readmission for a related procedure? Did the same surgeon who performed the initial repair also handle the readmission surgery?" SURGEON: "Yes, I did. The patient experienced bleeding from the repair site during the postoperative period, requiring me to re-enter the operating room to address the complication. The return surgery was definitely related to the original procedure. This scenario would require Modifier 78, right?"

It is important for the coder to seek a clear understanding of whether the return to the operating room is related to the original surgery and whether it is being performed by the same doctor who initially operated on the patient.

Documenting the Unplanned Return

The following information will be important to note:

The specific date of the original surgery

The nature of the complication that arose postoperatively

The procedure that was performed during the unplanned readmission

The name of the surgeon, or healthcare professional, who performed the readmission surgery.

Reporting the Procedure

The coder will need to report both the initial procedure as well as the procedure performed during the unplanned return visit. The second procedure will include Modifier 78, along with the appropriate procedure code to report the service provided. CODING EXAMPLE: Initial procedure: CPT code 39599 "Unlisted procedure, diaphragm" (reported as initially performed) Return procedure: CPT code 39599 "Unlisted procedure, diaphragm," Modifier 78, reported for the second visit.

It's essential for coders to verify that the provider has correctly documented the readmission, including its connection to the original surgery, to properly report the procedure.

Modifier 79: Unrelated Procedure or Service by the Same Physician or Other Qualified Health Care Professional During the Postoperative Period

Case Study: Unexpected Second Procedure

Here's an intriguing scenario: a patient has undergone diaphragmatic repair. During their postoperative recovery, a separate, entirely unrelated medical condition arises that requires immediate surgical intervention. This could mean that the patient now needs a gallbladder surgery. The same doctor who performed the initial diaphragmatic surgery is available to operate. This is a situation where Modifier 79 "Unrelated Procedure or Service by the Same Physician or Other Qualified Health Care Professional During the Postoperative Period" becomes significant for coding purposes.

Communicating with the Surgeon

The coder must communicate clearly with the surgeon and must carefully analyze the chart to make sure they fully understand the details of both procedures. It's crucial to ascertain whether the second surgery is directly connected to the initial procedure or if it is an independent, unrelated health issue. CODER: " The patient had a recent diaphragmatic repair. They also had a separate surgery during their postoperative recovery. Could you tell me what this surgery was for, and if it is connected to the diaphragmatic repair or if it was completely unrelated?" SURGEON: "That is right. I needed to operate on the patient for a gallbladder issue during the postoperative period after their diaphragm repair. The second procedure had absolutely nothing to do with the diaphragmatic repair."

Understanding the Modifier 79 Application

It's crucial to differentiate Modifier 79 from Modifier 78. Modifier 78 is utilized for subsequent surgical interventions related to the primary surgery, while Modifier 79 applies when the second procedure is unrelated to the first. The addition of Modifier 79 helps provide payers with accurate insights regarding the necessity of both surgeries and allows for appropriate reimbursements.

If the provider clarifies that the additional surgery is unrelated to the original diaphragmatic procedure, Modifier 79 will be appended to the code representing the additional procedure.

In this case, Modifier 79 is used to reflect that a different medical issue arose, separate from the diaphragm, leading to an entirely different surgery, which was performed by the same doctor who completed the first diaphragmatic procedure.

How To Use This Modifier

Modifier 79 is employed to designate services rendered during the postoperative period for conditions entirely unrelated to the original procedure. A crucial aspect is confirming that the original surgeon or another qualified healthcare professional provided this unrelated service during the patient's postoperative period.

Reporting Both Procedures

Just like Modifier 78, it's necessary to report the initial and subsequent procedures separately, ensuring that Modifier 79 is appended to the appropriate code for the unrelated surgery. CODING EXAMPLE: Initial procedure: CPT code 39599 "Unlisted procedure, diaphragm" Unrelated procedure: CPT code 47562 (an example), "Cholecystectomy, laparoscopic, with common duct exploration," Modifier 79.

For example, the unrelated surgery in our previous scenario would be a laparoscopic cholecystectomy to treat a gallbladder problem. The initial diaphragmatic repair code would remain without the modifier. In contrast, the subsequent surgery related to the gallbladder will include Modifier 79 as this procedure is unrelated to the primary diaphragm procedure, yet the same doctor performed the service during the postoperative period.

Modifier 80: Assistant Surgeon

Case Study: Sharing the Surgical Burden

Let's consider this: a complex diaphragmatic repair is in progress, and the surgeon requires additional assistance. For this demanding task, the surgeon will work alongside a skilled assistant surgeon to improve surgical precision and safety.

How to Explain it to the Surgeon

As a coder, the process involves thoroughly understanding the roles played by each surgical professional. CODER: "I notice the chart notes the involvement of an assistant surgeon during this diaphragmatic procedure. Could you explain how they contributed to the success of this operation?" SURGEON: "Dr. Smith provided valuable assistance during the diaphragmatic repair. She managed the intricate aspects of laparoscopic suturing. I wouldn't have been able to manage it alone. "

Who is Eligible to be an Assistant Surgeon

When reporting an assistant surgeon, remember, the "Assistant Surgeon" must be a licensed physician or another appropriately licensed healthcare professional with surgical training.

It's essential to make sure the provider documents the assistant surgeon's role within the medical records. This clarity allows for accurate billing and is important for adherence to billing guidelines. Modifier 80 is attached to the primary surgeon's code to denote the involvement of an assistant surgeon in the procedure.

How Documentation Helps

It's best to have detailed information from the medical records describing the tasks performed by the assistant surgeon and how their contributions contributed to the successful outcome of the procedure. When billing for the assistance, you will add the appropriate procedure code with modifier 80, as it indicates the use of an assistant surgeon. SURGICAL NOTE: "Procedure: Diaphragmatic repair. Surgeons: Dr. Jones, Dr. Smith (assisting). Dr. Jones performed the primary diaphragmatic repair, and Dr. Smith assisted with managing the intricacies of the laparoscopic suture closure."

The specific task that the assisting surgeon provided should be well documented. This detailed description is critical to demonstrate the rationale behind their involvement and to demonstrate the essential role played by the assistant in this particular surgery.

Modifier 81: Minimum Assistant Surgeon

Case Study: An Experienced Assist

In certain surgical procedures, the role of the assistant surgeon becomes crucial, but the procedure may not warrant the full involvement of an assistant. Modifier 81 is used to denote a "Minimum Assistant Surgeon," signifying the essential presence of an assistant who performs a smaller role, offering support to the primary surgeon during a specific part of the procedure, especially complex and intricate components.

Example: Specialized Assistance

During a complex diaphragmatic reconstruction involving laparoscopic sutures and other intricate steps, a minimum assistant surgeon might be necessary to maintain the appropriate placement of the surgical instruments while the primary surgeon performs delicate laparoscopic procedures. This assistant surgeon provides a level of surgical assistance, playing a more minimal but nonetheless important role in the overall surgical process.

How To Communicate with the Surgeon

In these cases, the coder should have a discussion with the surgeon regarding the level of participation by the assistant surgeon. CODER: " I understand that a surgeon assisted in this procedure. Can you explain what specific roles they played in the diaphragmatic reconstruction? It looks like it might be an instance of a Minimum Assistant Surgeon." SURGEON: "It was a very complex laparoscopic reconstruction, and I did need Dr. Smith's help. However, her role was mostly assisting in positioning the instruments and ensuring clear visualization, which was essential during those delicate maneuvers."

How This Affects Documentation

Documentation needs to specifically reflect the scope of the assistance provided. A simple statement in the surgical note should detail what functions were undertaken by the assistant surgeon and, in particular, why those tasks were essential to the procedure's success. SURGICAL NOTE: "Procedure: Diaphragmatic reconstruction. Surgeons: Dr. Jones, Dr. Smith (assisting). Dr. Smith provided assistance with positioning the instruments for visualization during the laparoscopic procedures."

Remember, the degree of assistance and its rationale are important considerations. In this case, the specific assistance in positioning instruments for laparoscopic procedures highlights a situation that might benefit from a "Minimum Assistant Surgeon" designation. When using Modifier 81, the coding needs to be meticulously documented. This involves reflecting the type of assistance provided, specifically explaining how this minimal level of assistance was critical to the success of the procedure. It’s important for the coder to confirm the specific functions undertaken by the "minimum" assistant surgeon during the diaphragmatic reconstruction. This clarity will be essential in verifying the appropriate application of Modifier 81 and for proper reimbursements.

Modifier 82: Assistant Surgeon (When Qualified Resident Surgeon Not Available)

Case Study: A Complex Procedure with No Residents

Let's think of this: the patient arrives for a diaphragmatic repair, a very intricate surgical procedure that usually requires a surgical assistant, which could include a surgical resident, who is overseen by the attending surgeon. However, in this scenario, a qualified resident surgeon is not available for the procedure.

Communicating With the Surgeon

The coder would want to ask for details of the situation from the surgeon. CODER: " The records show an assistant surgeon participating in this procedure. I understand there may be limitations with residents, but what type of qualified healthcare professional served as the assisting surgeon?" SURGEON: "There weren't any available residents for this procedure, so I had Dr. Smith assist with the diaphragmatic repair. She is fully trained and certified in these procedures and was instrumental in the success of the surgery."

When dealing with Modifier 82, coders will need to confirm from the surgeon or healthcare provider that a qualified surgical resident was unavailable for the procedure and that the attending physician utilized an appropriately qualified assistant.

Documentation

When documenting this scenario in the surgical notes, include an explanation as to why a qualified resident was not available and describe how the assistant surgeon assisted the attending physician with this particular diaphragmatic procedure. SURGICAL NOTE: " Procedure: Diaphragmatic Repair. Surgeon: Dr. Jones. Assistant Surgeon: Dr. Smith. There were no residents available to assist Dr. Jones during this procedure. Dr. Smith assisted with a range of tasks during the repair. Dr. Smith is board certified and skilled in this particular procedure. This assistance was crucial in successfully completing this repair."

Modifier 82 helps provide transparent details to the payer regarding the availability of resident surgeons for the procedure. It will aid in appropriate reimbursement for the assistant surgeon's participation.

Medical coding involves interpreting and analyzing detailed medical information and then appropriately assigning the correct procedure codes and modifiers. These actions directly impact the accurate reporting of services provided, which is essential for ensuring timely payments and compliance with relevant billing regulations. Understanding and accurately applying these modifiers is critical for the work of every medical coder!

Learn about the correct code for surgical procedures on the diaphragm when no CPT code exists! Discover how to use code 39599 "Unlisted procedure, diaphragm" and essential modifiers like 51, 53, 62, 66, 78, 79, 80, 81, and 82. This guide explains each modifier's application and provides real-world examples for accurate medical coding and billing automation with AI.

How to Code for Unlisted Diaphragm Procedures (CPT 39599) with Modifiers