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Official Description

Mastectomy, simple, complete

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A simple, complete mastectomy, designated by CPT® Code 19303, is a surgical procedure aimed at the removal of breast tissue along with the overlying skin, while intentionally excluding lymph nodes and muscle. This procedure is typically indicated for patients requiring a definitive surgical intervention for breast conditions, such as malignancies or other significant breast pathologies. The surgical approach involves making a curved incision beneath the breast, which allows for the excision of breast tissue extending into the axillary region, known as the tail of Spence. During the operation, the surgeon meticulously separates the skin from the underlying breast tissue, which is then carefully dissected away from the muscle fascia and sternum. The entire breast tissue, including the skin and nipple, is excised in its entirety. Following the removal, a drain tube may be inserted to facilitate the drainage of any excess fluid, and the skin edges are subsequently reapproximated and closed to promote healing. This procedure is crucial for patients who require complete removal of breast tissue for therapeutic reasons, ensuring that the affected area is adequately addressed while minimizing the risk of complications associated with more extensive surgical techniques.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The simple, complete mastectomy (CPT® Code 19303) is indicated for various conditions affecting the breast. The following are explicitly provided indications for this procedure:

  • Breast Cancer: This procedure is commonly performed for patients diagnosed with breast cancer, particularly when a lumpectomy is not feasible or when there is a need for complete removal of breast tissue to ensure clear margins.
  • Prophylactic Surgery: It may also be indicated for patients with a high risk of developing breast cancer, such as those with a strong family history or genetic predisposition, where preventive measures are warranted.
  • Severe Benign Conditions: In some cases, severe benign breast conditions that cause significant symptoms or complications may also necessitate a complete mastectomy.

2. Procedure

The procedure for a simple, complete mastectomy involves several critical steps, each designed to ensure the thorough removal of breast tissue while maintaining patient safety. The following procedural steps are outlined:

  • Step 1: Anesthesia Administration The procedure begins with the administration of anesthesia to ensure the patient is comfortable and pain-free throughout the surgery. General anesthesia is typically used for this type of operation.
  • Step 2: Incision Creation A curved incision is made beneath the breast, which is strategically placed to minimize scarring and facilitate access to the breast tissue. This incision allows the surgeon to access the breast while preserving the surrounding structures as much as possible.
  • Step 3: Tissue Dissection Following the incision, the surgeon carefully separates the skin from the underlying breast tissue. This dissection is performed with precision to avoid damage to adjacent tissues and to ensure that all breast tissue is removed effectively.
  • Step 4: Complete Tissue Removal The surgeon then proceeds to excise all breast tissue, including the skin and nipple, ensuring that the entire area is cleared of any potentially affected tissue. This step is crucial for achieving the desired therapeutic outcome.
  • Step 5: Drain Placement After the complete removal of breast tissue, a drain tube may be placed to allow for the drainage of any excess fluid that may accumulate in the surgical site, thereby reducing the risk of complications such as seroma formation.
  • Step 6: Closure of Incision Finally, the skin edges are reapproximated and closed using sutures or staples, ensuring that the incision heals properly. The closure technique is chosen based on the surgeon's preference and the specific circumstances of the surgery.

3. Post-Procedure

Post-procedure care following a simple, complete mastectomy is essential for optimal recovery. Patients are typically monitored in a recovery area until the effects of anesthesia wear off. Pain management is an important aspect of post-operative care, and patients may be prescribed analgesics to manage discomfort. The drain, if placed, will be monitored for output and may be removed during follow-up visits as healing progresses. Patients are advised on wound care, including keeping the incision clean and dry, and to watch for any signs of infection, such as increased redness, swelling, or discharge. Follow-up appointments are crucial for assessing healing and discussing any further treatment options, such as radiation or chemotherapy, if indicated. Overall, the recovery period may vary, but patients are generally encouraged to gradually resume normal activities as tolerated, while avoiding strenuous activities until cleared by their healthcare provider.

Short Descr MAST SIMPLE COMPLETE
Medium Descr MASTECTOMY SIMPLE COMPLETE
Long Descr Mastectomy, simple, complete
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 Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P1A - Major procedure - breast
MUE 1
CCS Clinical Classification 167 - Mastectomy
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).
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
GC This service has been performed in part by a resident under the direction of a teaching physician
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).
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.
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.
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
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.
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.
73 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure prior to the administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may cancel a surgical or diagnostic procedure subsequent to the patient's surgical preparation (including sedation when provided, and being taken to the room where the procedure is to be performed), but prior to the administration of anesthesia (local, regional block(s) or general). under these circumstances, the intended service that is prepared for but cancelled can be reported by its usual procedure number and the addition of modifier 73. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
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.
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.
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.)
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.)
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).
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)
CG Policy criteria applied
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
GW Service not related to the hospice patient's terminal condition
GZ Item or service expected to be denied as not reasonable and necessary
KX Requirements specified in the medical policy have been met
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
SG Ambulatory surgical center (asc) facility service
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
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
Date
Action
Notes
2020-01-01 Note AMA Guidelines changed.
2018-01-01 Note AMA Guidelines changed.
2011-01-01 Changed Short description changed.
2007-01-01 Added First appearance in code book in 2007.
1983-12-31 Deleted Code deleted.
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