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Official Description

Insertion, drug-delivery implant (ie, bioresorbable, biodegradable, non-biodegradable)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 11981 refers to the procedure of inserting a drug-delivery implant, which can be classified as bioresorbable, biodegradable, or non-biodegradable. A drug delivery implant is a specialized device designed to release medication at a controlled rate over a specified period. Bioresorbable and biodegradable implants are unique in that they are designed to break down and be absorbed by the body naturally, eliminating the need for surgical removal after their therapeutic effect has been achieved. The term "bioresorbable" emphasizes the body's metabolic processes that facilitate the breakdown of the implant, while "biodegradable" highlights the implant's inherent properties that allow it to be decomposed by biological activity. These implants typically consist of a drug reservoir encased in a polymer or a mixture of drug and polymer, which gradually releases the medication as the polymer degrades. Common materials used for bio-absorbable polymers include hydrogels such as poly(lactic acid) and poly(glycolic acid). In contrast, non-biodegradable implants remain in the body until they are manually removed after the treatment period. The implants are generally cylindrical in shape and are inserted using a specialized device provided by the drug manufacturer. The insertion process involves selecting an appropriate site, often the inner aspect of the upper arm, followed by cleansing the area. A local anesthetic is administered to minimize discomfort, and a small incision is made to facilitate the insertion of the implant. The insertion tool, pre-loaded with the implant, is then carefully inserted through the incision and advanced subcutaneously until the implant reaches the desired position. Once in place, the implant is released from the insertion tool, which is subsequently withdrawn. The physician palpates the skin over the implant to confirm its proper positioning before closing the incision. This procedure is essential for delivering medication effectively and ensuring patient compliance with treatment regimens.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 11981 is indicated for the insertion of drug-delivery implants in various clinical scenarios. These indications may include:

  • Chronic Pain Management The use of drug-delivery implants can be beneficial for patients requiring long-term pain management solutions.
  • Hormonal Therapy Implants may be utilized for the sustained release of hormones in patients undergoing hormonal treatments.
  • Contraceptive Use Drug-delivery implants are commonly indicated for contraception, providing a long-term solution for birth control.
  • Local Anesthetic Delivery The procedure may be indicated for the localized delivery of anesthetics to manage pain in specific areas.

2. Procedure

The procedure for the insertion of a drug-delivery implant involves several critical steps to ensure proper placement and functionality of the implant. Each step is outlined as follows:

  • Step 1: Site Selection and Preparation The physician selects an appropriate insertion site, typically the inner aspect of the upper arm. The area is then cleansed thoroughly to minimize the risk of infection.
  • Step 2: Anesthesia Administration A local anesthetic is administered to the patient to ensure comfort during the procedure. This step is crucial for minimizing pain and discomfort associated with the incision and insertion.
  • Step 3: Incision Creation A small incision is made at the selected site to allow access for the insertion tool. The incision is designed to be minimal to reduce scarring and promote quicker healing.
  • Step 4: Implant Insertion The insertion tool, which is pre-loaded with the drug-delivery implant, is carefully inserted through the incision. The tool is advanced subcutaneously until the implant reaches the designated position beneath the skin.
  • Step 5: Implant Release Once the implant is in the correct position, it is released from the insertion tool. The tool is then withdrawn from the incision site.
  • Step 6: Verification of Positioning The physician palpates the skin over the implant to ensure that it is properly positioned and that there are no complications from the insertion.
  • Step 7: Incision Closure Finally, the incision is closed, typically with sutures or adhesive strips, to promote healing and protect the insertion site.

3. Post-Procedure

After the insertion of the drug-delivery implant, patients are typically monitored for any immediate complications. Post-procedure care may include instructions on how to care for the incision site to prevent infection and promote healing. Patients may be advised to avoid strenuous activities or heavy lifting for a specified period to ensure proper recovery. Follow-up appointments may be scheduled to assess the implant's effectiveness and to monitor for any potential side effects or complications associated with the drug delivery system. It is essential for patients to report any unusual symptoms or concerns to their healthcare provider promptly.

Short Descr INSERTION DRUG DLVR IMPLANT
Medium Descr INSERTION DRUG DELIVERY IMPLANT
Long Descr Insertion, drug-delivery implant (ie, bioresorbable, biodegradable, non-biodegradable)
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) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - 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 STV-Packaged Codes
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P6D - Minor procedures - other (non-Medicare fee schedule)
MUE 1
CCS Clinical Classification 231 - Other therapeutic procedures
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).
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)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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.
GC This service has been performed in part by a resident under the direction of a teaching physician
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.)
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).
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.
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.
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.
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).
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
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
F1 Left hand, second digit
F2 Left hand, third digit
FA Left hand, thumb
FP Service provided as part of family planning program
GA Waiver of liability statement issued as required by payer policy, individual case
GJ "opt out" physician or practitioner emergency or urgent service
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
GX Notice of liability issued, voluntary under payer policy
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
GZ Item or service expected to be denied as not reasonable and necessary
PO 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
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
SA Nurse practitioner rendering service in collaboration with a physician
SG Ambulatory surgical center (asc) facility service
T5 Right foot, great toe
T6 Right foot, second digit
T7 Right foot, third digit
T8 Right foot, fourth digit
TA Left foot, great toe
UA Medicaid level of care 10, as defined by each state
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
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
2022-01-01 Changed Code description changed.
2002-01-01 Added First appearance in code book in 2002.
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