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Official Description

Repair, complex, scalp, arms, and/or legs; each additional 5 cm or less (List separately in addition to code for primary procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Complex repair refers to a surgical procedure that involves the closure of a wound using multiple layers of sutures. This type of repair is necessary when the wound is extensive or complicated, requiring more than just a simple closure. The procedure may involve various techniques such as scar revision, debridement (removal of dead or infected tissue), extensive undermining (lifting the skin to allow for better closure), and the use of stents or retention sutures to support the wound during healing. The complex repair is typically performed under local anesthesia, ensuring that the patient remains comfortable while the physician meticulously cleans the wound site and repairs the subcutaneous tissue, dermis, and epidermis. For the closure, dissolving sutures are often utilized for the deeper layers beneath the skin, promoting healing without the need for suture removal. In cases where multiple wounds of similar complexity are present in the same anatomical area, the total length of these wounds is combined to determine the appropriate coding. For instance, CPT® Code 13120 is designated for repairs measuring between 1.1 cm and 2.5 cm, while CPT® Code 13121 is applicable for repairs ranging from 2.6 cm to 7.5 cm. Additionally, CPT® Code 13122 is used to report each additional 5 cm or less of complex repair performed beyond the initial 7.5 cm, and it is billed separately in conjunction with the primary procedure code.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Complex repair procedures are indicated for a variety of conditions and situations that necessitate a more intricate approach to wound closure. These indications may include:

  • Extensive Wounds: Wounds that are larger than what can be effectively closed with simple techniques, requiring layered closure to ensure proper healing.
  • Scar Revision: Procedures aimed at improving the appearance of scars, which may involve the removal of scar tissue and careful closure to minimize further scarring.
  • Debridement: The need to remove necrotic or infected tissue from a wound to promote healing and prevent complications.
  • Complex Anatomy: Wounds located in areas with intricate anatomical structures, such as the scalp, arms, and legs, where careful layering is essential for functional and aesthetic outcomes.
  • Multiple Wounds: Situations where there are several wounds of similar complexity in the same anatomical area that require coordinated repair efforts.

2. Procedure

The procedure for complex repair involves several critical steps to ensure effective closure of the wound. These steps include:

  • Step 1: Preparation of the Wound Site The physician begins by thoroughly cleaning the wound site to reduce the risk of infection. This may involve the use of antiseptic solutions and careful examination of the wound to assess its extent and complexity.
  • Step 2: Anesthesia Administration Local anesthesia is administered to the patient to ensure comfort during the procedure. This allows the physician to perform the repair without causing pain to the patient.
  • Step 3: Layered Closure The physician performs a complex repair by closing the wound in multiple layers. This typically involves suturing the subcutaneous tissue first, followed by the dermis, and finally the epidermis. Each layer is carefully approximated to promote optimal healing and minimize scarring.
  • Step 4: Use of Sutures Dissolving sutures are often used for the deeper layers beneath the skin, which will gradually dissolve as the tissue heals. This eliminates the need for suture removal and reduces patient discomfort post-procedure.
  • Step 5: Documentation of Wound Lengths In cases where multiple wounds are repaired, the physician documents the lengths of all similar wounds in the same anatomical area. This information is crucial for accurate coding and billing.

3. Post-Procedure

After the complex repair procedure, the patient is typically monitored for any immediate complications. Post-procedure care may include instructions on wound care, signs of infection to watch for, and activity restrictions to promote healing. Patients are advised to keep the area clean and dry, and to follow up with their healthcare provider for any necessary evaluations. The expected recovery time may vary depending on the extent of the repair and the patient's overall health, but careful adherence to post-operative instructions is essential for optimal healing and cosmetic outcomes.

Short Descr CMPLX RPR S/A/L ADDL 5 CM/>
Medium Descr REPAIR COMPLEX SCALP/ARM/LEG EA ADDL 5 CM/<
Long Descr Repair, complex, scalp, arms, and/or legs; each additional 5 cm or less (List separately in addition to code for primary procedure)
Status Code Active Code
Global Days ZZZ - Code Related to Another Service
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
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 Items and Services Packaged into APC Rates
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P6B - Minor procedures - musculoskeletal
MUE 9
CCS Clinical Classification 171 - Suture of skin and subcutaneous tissue

This is an add-on code that must be used in conjunction with one of these primary codes.

13121 MPFS Status: Active Code APC T ASC A2 CPT Assistant Article Illustration for Code Repair, complex, scalp, arms, and/or legs; 2.6 cm to 7.5 cm
20701 Add-on Code MPFS Status: Active Code APC N Removal of drug-delivery device(s), deep (eg, subfascial) (List separately in addition to code for primary procedure)
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.)
GC This service has been performed in part by a resident under the direction of a teaching physician
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
RT Right side (used to identify procedures performed on the right side of the body)
SG Ambulatory surgical center (asc) facility service
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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.
LT Left side (used to identify procedures performed on the left side of the body)
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
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).
ET Emergency services
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
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.
47 Anesthesia by surgeon: regional or general anesthesia provided by the surgeon may be reported by adding modifier 47 to the basic service. (this does not include local anesthesia.) note: modifier 47 would not be used as a modifier for the anesthesia procedures.
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).
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).
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.
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.
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).
AG Primary physician
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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
KX Requirements specified in the medical policy have been met
PN Non-excepted service provided at an off-campus, outpatient, provider-based department of a hospital
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
Date
Action
Notes
2013-01-01 Changed Short Descriptor changed.
2000-01-01 Added First appearance in code book in 2000.
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