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Official Description

Amputation, thigh, through femur, any level;

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 27590 refers to the surgical amputation of the thigh through the femur at any specified level. This complex surgical intervention involves several critical steps to ensure the safe and effective removal of the leg while preserving as much surrounding tissue as possible for future rehabilitation. Initially, the surgeon marks incision lines on the skin to guide the amputation at the appropriate level. The procedure begins with the incision of the skin and underlying soft tissue, followed by the careful exposure and isolation of muscle groups. During this phase, nerves and blood vessels are meticulously identified and separated to prevent any potential irritation to the nerves from pulsating arteries. The nerves are then transected and allowed to retract into the surrounding soft tissue, while blood vessels are ligated and cut to control bleeding. Once the femur is fully exposed, periosteal flaps are created, and the femur is transected at the level of these flaps. The surgical team then sutures the flaps over the remaining femur to promote healing and protect the underlying structures. To ensure proper muscle function and support, antagonistic muscle groups are sutured together and anchored to the periosteum, effectively enveloping the remaining femur in muscle tissue. Finally, skin flaps are fashioned and sutured over the muscle to complete the procedure. After the amputation, the extremity may be wrapped in an elastic bandage or placed in a plaster splint, as indicated by the use of CPT® Code 27590. Following adequate wound healing, the patient is prepared for fitting with a prosthesis, which is essential for restoring mobility. In cases where a cast of the stump is obtained and the patient is fitted for a prosthesis immediately, CPT® Code 27591 should be utilized instead.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure of amputation through the femur, as described by CPT® Code 27590, is indicated for various medical conditions that may necessitate the removal of the thigh. These indications may include, but are not limited to:

  • Severe Trauma: Significant injuries to the thigh that cannot be repaired or pose a risk of infection may require amputation.
  • Malignancy: Tumors located in the femur or surrounding tissues that cannot be excised without amputation.
  • Peripheral Vascular Disease: Conditions that severely compromise blood flow to the leg, leading to tissue necrosis.
  • Infection: Uncontrolled infections in the thigh that do not respond to conservative treatment may necessitate amputation to prevent systemic spread.

2. Procedure

The procedure for amputation through the femur involves several detailed steps to ensure a successful outcome. Each step is critical to the overall success of the surgery and the patient's recovery.

  • Step 1: Marking Incision Lines The surgeon begins by marking the incision lines on the skin to determine the appropriate level for the amputation. This step is crucial for ensuring that the amputation is performed at the correct site.
  • Step 2: Incision of Skin and Soft Tissue Following the marking, the surgeon incises the skin and underlying soft tissue to access the muscles and other structures beneath.
  • Step 3: Exposure and Isolation of Muscles The muscles are then exposed and isolated by muscle group. This careful dissection allows for the identification of nerves and blood vessels.
  • Step 4: Identification of Nerves and Blood Vessels Nerves and blood vessels are identified and isolated to prevent any pulsatile irritation of the nerves during the procedure. This step is vital for preserving nerve function as much as possible.
  • Step 5: Transection of Nerves The identified nerves are transected and allowed to retract into the soft tissue, minimizing the risk of neuroma formation.
  • Step 6: Ligation and Transection of Blood Vessels Blood vessels are carefully ligated and transected to control bleeding and ensure a clear surgical field.
  • Step 7: Exposure of the Femur The femur is then exposed, and periosteal flaps are created to facilitate the transection of the bone.
  • Step 8: Transection of the Femur The femur is transected at the level of the periosteal flaps, which is a critical step in the amputation process.
  • Step 9: Suturing of Periosteal Flaps The periosteal flaps are sutured over the remaining femur to protect the bone and promote healing.
  • Step 10: Suturing of Muscle Groups Antagonistic muscle groups are sutured to each other and anchored to the periosteum, ensuring that the remaining portion of the femur is completely enveloped in muscle tissue.
  • Step 11: Fashioning and Suturing of Skin Flaps Finally, skin flaps are fashioned and sutured over the muscle to complete the closure of the surgical site.

3. Post-Procedure

After the completion of the amputation procedure, post-operative care is essential for the patient's recovery. The extremity may be wrapped in an elastic bandage or placed in a plaster splint to provide support and protect the surgical site. Monitoring for signs of infection, proper wound healing, and managing pain are critical components of post-operative care. Once the wound has healed adequately, the patient will be evaluated for fitting with a prosthesis, which is a vital step in restoring mobility and function. If a cast of the stump is obtained during the procedure, the patient may be fitted for a prosthesis immediately, as indicated by the use of CPT® Code 27591.

Short Descr AMPUTATE LEG AT THIGH
Medium Descr AMPUTATION THIGH THROUGH FEMUR ANY LEVEL
Long Descr Amputation, thigh, through femur, any level;
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 1 - 150% payment adjustment for bilateral procedures applies.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P3D - Major procedure, orthopedic - other
MUE 1
CCS Clinical Classification 157 - Amputation of lower extremity
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
GC This service has been performed in part by a resident under the direction of a teaching physician
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
54 Surgical care only: when 1 physician or other qualified health care professional performs a surgical procedure and another provides preoperative and/or postoperative management, surgical services may be identified by adding modifier 54 to the usual procedure number.
55 Postoperative management only: when 1 physician or other qualified health care professional performed the postoperative management and another performed the surgical procedure, the postoperative component may be identified by adding modifier 55 to the usual procedure number.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
AF Specialty physician
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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2010-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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