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Official Description

Application of short leg cast (below knee to toes); walking or ambulatory type

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 29425 involves the application of a short leg cast, which is specifically designed to cover the area from just below the knee down to the toes. This type of cast is commonly used in cases where immobilization of the lower leg is necessary due to fractures, sprains, or other injuries that require stabilization. The cast is categorized as a walking or ambulatory type, meaning it is constructed in a way that allows the patient to bear weight and walk while wearing it. This is particularly important for maintaining mobility during the healing process. The application of the cast may also include additional features such as padding or a brace at the bottom, which enhances comfort and support, enabling the patient to walk safely. It is essential for healthcare professionals to ensure that the cast is applied correctly to provide adequate immobilization while allowing for some degree of mobility, thus facilitating the patient's recovery and rehabilitation.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The application of a short leg cast using CPT® Code 29425 is indicated for various conditions that necessitate immobilization of the lower leg. These indications may include:

  • Fractures - The cast is often applied to stabilize fractures of the lower leg, including the tibia and fibula, to promote proper healing.
  • Sprains - In cases of severe ankle or foot sprains, a cast may be required to immobilize the joint and prevent further injury.
  • Post-surgical support - Following certain surgical procedures on the lower leg, a cast may be used to protect the surgical site and maintain alignment during recovery.
  • Soft tissue injuries - Conditions such as tendon injuries or severe contusions may also warrant the use of a short leg cast for immobilization and support.

2. Procedure

The procedure for applying a short leg cast involves several key steps to ensure proper fit and function. The process begins with the patient being positioned comfortably, typically seated or lying down, to allow easy access to the leg. The physician first assesses the leg for any injuries or conditions that require casting. Once the assessment is complete, the physician prepares the leg by cleaning the skin and ensuring it is dry to promote adhesion of the cast material.

  • Step 1: The physician selects the appropriate size and type of cast material, which may include fiberglass or plaster, based on the specific needs of the patient.
  • Step 2: A stockinette is placed over the leg, extending from just below the knee to the toes, to protect the skin and provide a smooth surface for the cast.
  • Step 3: Padding is applied over the stockinette to provide cushioning and prevent pressure sores. This padding is crucial for patient comfort and protection.
  • Step 4: The cast material is then applied in layers, ensuring that it conforms closely to the contours of the leg while maintaining adequate circulation and comfort.
  • Step 5: Once the cast is applied, the physician checks for proper fit and comfort, making any necessary adjustments. If a walking or ambulatory type cast is indicated, additional padding or a brace may be added to the bottom of the cast to facilitate walking.
  • Step 6: Finally, the cast is allowed to set and harden, after which the physician provides instructions on care and maintenance of the cast.

3. Post-Procedure

After the application of the short leg cast, the patient is typically advised on several important post-procedure care instructions. These may include keeping the cast dry and clean, avoiding any activities that could compromise the integrity of the cast, and monitoring for any signs of complications such as increased pain, swelling, or changes in skin color. The physician may schedule follow-up appointments to assess the healing process and determine when the cast can be removed. Patients are also instructed on how to manage discomfort and are encouraged to elevate the leg to reduce swelling during the initial recovery period. Proper adherence to these guidelines is essential for optimal healing and recovery.

Short Descr APPLY SHORT LEG CAST
Medium Descr APPLICATION SHORT LEG CAST WALKING/AMBULATORY
Long Descr Application of short leg cast (below knee to toes); walking or ambulatory type
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
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) 1 - Statutory payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Multiple Reduction Applies
ASC Payment Indicator Office-based surgical procedure added to ASC list in CY 2008 or later with MPFS nonfacility PE RVUs; payment based on MPFS nonfacility PE RVUs.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P6B - Minor procedures - musculoskeletal
MUE 1
CCS Clinical Classification 214 - Traction, splints, and other wound care
RT Right side (used to identify procedures performed on the right side of the body)
LT Left side (used to identify procedures performed on the left side of the body)
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.
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.
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.)
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).
GP Services delivered under an outpatient physical therapy plan of care
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
AG Primary physician
CR Catastrophe/disaster related
F1 Left hand, second digit
GA Waiver of liability statement issued as required by payer policy, individual case
GC This service has been performed in part by a resident under the direction of a teaching physician
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
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
KX Requirements specified in the medical policy have been met
NU New equipment
T1 Left foot, second digit
T2 Left foot, third digit
T6 Right foot, second digit
TA Left foot, great toe
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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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Pre-1990 Added Code added.
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