Friday, February 15, 2019

CPT 21299, 21499, 26989


Code Description CPT
21299 Unlisted craniofacial and maxillofacial procedure

21499 Unlisted musculoskeletal procedure, head

26989 Unlisted procedure, hands or fingers


Introduction

A face or hand transplant involves transferring many different types of tissue such as bone, blood vessels, muscle, nerve tissue, and skin from one person to another.

The donor’s family is consulted and the tissue is gathered only after the family agrees that their loved one’s tissues may be used in this way. Face or hand transplant surgeries often last many hours. A face transplant takes at least 12 hours and may last up to 36 hours. A hand transplant takes between 8 to 15 hours. (By comparison, a heart transplant usually takes between 6 and 8 hours.) Because this surgery is so extensive and involves many different types of tissue, the risks are considered to be high. While these surgeries have been done, they have only been done on a very small number of people. There is not enough medical evidence to determine if the benefits to a patient outweigh the risk of complications, infections, tissue rejection, and problems with the immune system from long-term use of anti-rejection drugs. For these reasons, face and hand transplants are considered investigational (unproven). 


Policy Coverage Criteria 

Procedure Investigational  Composite tissue allotransplantation, hand and/or face

Coding 

Composite tissue allotransplantation of the hand and/or face is considered investigational.


There are no specific CPT codes for the composite tissue allotransplantation procedure. It would be reported using combinations of existing codes or the unlisted code for the anatomic area. See the coding table below for possible code options.


.

Related Information 

Description


Composite tissue allotransplantation (also referred to as vascularized composite allotransplantation) is defined as transplantation of histologically different tissues. This type of transplantation is being proposed for facial transplants in patients with severely disfigured faces and for hand transplants in patients unsatisfied with prosthetic hands. The treatment has potential benefits in terms of improving functional status and psychosocial well-being. It also has potential risks, most notably those associated with a lifelong regimen of immunosuppressive drugs.


Background

Composite Tissue Allotransplantation


Composite tissue allotransplantation refers to the transplantation of histologically different tissue, which may include skin, connective tissue, blood vessels, muscle, bone, and nerve tissue. The procedure is also known as reconstructive transplantation. To date, primary applications of this type of transplantation have been of the hand and face (partial and full), although there are also reported cases of several other composite tissue allotransplantations, including that of the larynx, knee, and abdominal wall. 

Hand and face transplants have been shown to be technically feasible. The first successful partial face transplant was performed in France in 2005, and the first complete facial transplant was performed in Spain in 2010. In the United States, the first facial transplant was done in 2008; it was a near-total face transplant and included the midface, nose, and bone. The first hand transplant with short-term success occurred in 1998 in France. However, the patient failed to follow the immunosuppressive regimen, which led to graft failure and removal of the hand 29 months after transplantation. The first hand transplantation in the United States took place in 1999.

The most commonly performed face transplant procedure has been to restore the lower twothirds of facial structure, especially the perioral area (ie, lips, cheeks, chin) and in some cases the forehead, eyelids and scalp.

Facial transplantation has been performed on patients whose faces have been disfigured by trauma, burns, disease, or birth defects and who are unable to benefit from traditional surgical reconstruction. Hand transplantations have been done in patients who lost a hand due to trauma or life-saving interventions that caused permanent injury to the hand.

To date, hand transplants have not been performed for congenital anomalies or loss of a limb due to cancer. 

Composite tissue allotransplantation procedures are complex and involve a series of operations using a rotating team of specialists. For face transplantation, the surgery may last 8 to 15 hours. Hand transplant surgery has typically lasted between 8 and 12 hours. Bone fixation occurs first, and this is generally followed by the artery and venous repair and then by suture of nerves and/or tendons. In all surgeries performed to date, the median and ulnar nerves were repaired. The radial nerve was reconstructed in about half of the procedures.

Unlike most solid organ transplantations (eg, kidney and heart transplants), composite tissue allotransplantation is not life-saving, and its primary aim rests mainly in a patient’s cosmetic satisfaction and quality of life. In the case of facial transplantations, there is immense potential for the psychosocial benefits when a surgery is successful. Moreover, that the goal of composite tissue transplantation is to improve function (eg, grasping and lifting after hand transplants, blinking and mouth closure after face transplants) without alternative interventions such as prosthetics. Additionally, in the case of face transplantation, the procedure may be less traumatic than “traditional” facial reconstructive surgery using the patient’s own tissue. For example, traditional procedures often involve dozens of operations, whereas facial transplantation involves only a few operations.

Adverse Events
Composite tissue allotransplantation is associated with potential risks and benefits, and patients who undergo face or hand transplantation must adhere to a lifelong regimen of immunosuppressive drugs. Risks of immunosuppression include acute and chronic rejection, opportunistic infection that may be life-threatening, and metabolic disorders such as diabetes, kidney damage, and lymphoma. Other challenges include the need to participate actively in intensive physical therapy to restore functionality and the potential for frustration and disappointment if functional improvement does not meet expectations. Moreover, there is the potential for allograft loss, which would lead to additional procedures in hand transplant patients, and there are limited reconstructive options for facial transplantation. Furthermore, in the case of hand transplants, there is a risk that functional ability (eg, grasping and lifting objects) may be lower than with a prosthetic hand, especially compared with newer electronic prosthetic devices. Due to the importance of selecting candidates who can withstand these physical and mental challenges, potential hand and face transplant recipients undergo extensive screening for both medical and psychosocial suitability.

No comments:

Post a Comment

Popular Posts