Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Mastotomy with exploration or drainage of abscess, deep

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 19020 refers to a surgical procedure known as a mastotomy, which involves the exploration or drainage of a deep abscess in the breast tissue. This procedure is typically indicated when there is a suspicion of an abscess, which is a localized collection of pus that can occur due to infection or other underlying conditions. During the mastotomy, the physician makes a radial incision in the skin that extends outward from the site of the abscess or the area that requires exploration. This incision allows for deeper access to the affected tissue. Once the incision is made, the physician evaluates the area of concern to determine the presence of an abscess. If an abscess is identified, the physician enters the abscess cavity, breaks up any loculations—small pockets of pus—through careful dissection, and proceeds to drain the abscess. Additionally, cultures may be taken from the abscess for laboratory analysis, which is reported separately. After the drainage is complete, the abscess site is irrigated with saline solution, packed with gauze, and left open to facilitate proper drainage and healing.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 19020 is indicated for the following conditions:

  • Abscess Formation The presence of a deep abscess in the breast tissue that requires surgical intervention for drainage.
  • Infection Situations where there is a suspected infection leading to the formation of an abscess that may not resolve with conservative treatment.
  • Evaluation of Breast Tissue Cases where exploration of the breast tissue is necessary to assess for other underlying issues, such as tumors or other abnormalities.

2. Procedure

The procedure for CPT® Code 19020 involves several critical steps to ensure effective drainage and evaluation of the abscess.

  • Step 1: Incision The physician begins by making a radial incision in the skin over the site of the abscess or the area that requires exploration. This incision is designed to provide adequate access to the underlying tissue.
  • Step 2: Deepening the Incision After the initial incision, the physician deepens the incision to reach the area of concern. This step is crucial for evaluating the extent of the abscess and surrounding tissue.
  • Step 3: Evaluation Once the incision is deepened, the physician carefully evaluates the area to determine if an abscess is present. This evaluation helps in planning the next steps of the procedure.
  • Step 4: Abscess Drainage If an abscess is identified, the physician enters the abscess cavity. The loculations within the abscess are broken up through dissection, allowing for effective drainage of the pus.
  • Step 5: Cultures During the procedure, cultures may be taken from the abscess to be sent for laboratory analysis. This step is important for identifying the causative organism and guiding further treatment.
  • Step 6: Irrigation and Packing After the abscess has been drained, the site is irrigated with saline solution to cleanse the area. The cavity is then packed with gauze and left open to facilitate continued drainage and promote healing.

3. Post-Procedure

Following the procedure, the patient may require specific post-operative care to ensure proper healing. The gauze packing will need to be monitored and changed as necessary to prevent infection and promote drainage. The physician may provide instructions regarding wound care, signs of infection to watch for, and follow-up appointments to assess healing. It is essential for the patient to adhere to these guidelines to ensure optimal recovery and prevent complications.

Short Descr MASTOTOMY EXPL DRG ABSC DP
Medium Descr MASTOTOMY W/EXPLORATION/DRAINAGE ABSCESS DEEP
Long Descr Mastotomy with exploration or drainage of abscess, deep
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) 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 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) P5E - Ambulatory procedures - other
MUE 2
CCS Clinical Classification 175 - Other OR therapeutic procedures on skin and breast
LT Left side (used to identify procedures performed on the left side of the body)
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).
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.
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.
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.)
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
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
GW Service not related to the hospice patient's terminal condition
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
RT Right side (used to identify procedures performed on the right side of the body)
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
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
Action
Notes
2024-01-01 Changed Short Description changed.
Pre-1990 Added Code added.
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"