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Official Description

Vitrectomy, mechanical, pars plana approach; with removal of preretinal cellular membrane (eg, macular pucker)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A mechanical vitrectomy with removal of the preretinal cellular membrane, commonly known as a macular pucker, is a surgical procedure performed through a pars plana approach. The vitreous, which is a clear, gel-like substance filling the center of the eye, is removed to facilitate the treatment of the macular pucker, also referred to as an epiretinal membrane or preretinal membrane. A macular pucker occurs when the vitreous detaches from the retina, leading to microscopic damage that results in the formation of scar tissue at the site of detachment. This condition can significantly impair vision, causing symptoms such as blurred or distorted sight. During the procedure, three small incisions are made in the eye at the pars plana, which is situated in front of the ciliary body and behind the retina. Through these incisions, a light pipe, an infusion port, and a vitrectomy device are inserted. The light pipe illuminates the interior of the eye, while the vitrectomy device, which operates with microscopic oscillating cutting motions, is used to remove the vitreous gel in a controlled manner. As the vitreous gel is extracted, it is replaced with fluid via the infusion port to maintain intraocular pressure. The central vitreous is thoroughly removed, allowing access to the vitreous base. With the aid of high magnification, the edge of the cellular membrane is carefully elevated, and microforceps are utilized to further lift and remove the preretinal cellular membrane. Finally, the retina is examined for any signs of tearing before the surgical instruments are withdrawn from the eye.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure is indicated for the following conditions:

  • Macular Pucker - A condition characterized by the formation of scar tissue on the retina, which can lead to visual distortion and blurriness.
  • Epiretinal Membrane - A thin layer of tissue that can form on the surface of the retina, often resulting in similar visual disturbances as a macular pucker.
  • Preretinal Membrane - A membrane that develops in front of the retina, which may require surgical intervention to restore normal vision.

2. Procedure

The procedure involves several critical steps to ensure effective removal of the preretinal cellular membrane:

  • Step 1: Incision Creation - Three tiny incisions are made in the eye at the pars plana, which is located in front of the ciliary body and behind the retina. These incisions provide access for the surgical instruments needed for the vitrectomy.
  • Step 2: Insertion of Surgical Instruments - A light pipe, an infusion port, and a vitrectomy device are inserted through the incisions. The light pipe is used to illuminate the interior of the eye, allowing the surgeon to visualize the surgical field clearly.
  • Step 3: Vitrectomy - The vitrectomy device is activated, utilizing a microscopic oscillating cutting mechanism to remove the vitreous gel from the eye in a slow and controlled manner. This step is crucial for clearing the path to the preretinal cellular membrane.
  • Step 4: Fluid Replacement - As the vitreous gel is removed, it is continuously replaced with fluid through the infusion port to maintain proper intraocular pressure, ensuring the eye remains stable during the procedure.
  • Step 5: Membrane Elevation and Removal - Once the central vitreous is removed, the vitreous base is accessed. Using high magnification, the edge of the preretinal cellular membrane is carefully elevated. Microforceps are then introduced to further lift and remove the membrane from the retina.
  • Step 6: Final Examination - After the removal of the membrane, the retina is thoroughly examined for any signs of tearing or other complications before the surgical instruments are withdrawn from the eye.

3. Post-Procedure

Post-procedure care typically involves monitoring for any complications, such as retinal tears or infections. Patients may experience some discomfort and will be advised on the use of prescribed medications, including anti-inflammatory and antibiotic eye drops, to aid in recovery. Follow-up appointments are essential to assess healing and visual outcomes. Patients are often instructed to avoid strenuous activities and to follow specific positioning guidelines to promote optimal recovery.

Short Descr VIT FOR MACULAR PUCKER
Medium Descr VITRECTOMY PARS PLANA REMOVE PRERETINAL MEMBRANE
Long Descr Vitrectomy, mechanical, pars plana approach; with removal of preretinal cellular membrane (eg, macular pucker)
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 Non office-based surgical procedure added in CY 2008 or later; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P4C - Eye procedure - retinal detachment
MUE 1
CCS Clinical Classification 20 - Other intraocular therapeutic procedures

This is a primary code that can be used with these additional add-on codes.

66990 Addon Code MPFS Status: Active Code APC N ASC N1 CPT Assistant Article Use of ophthalmic endoscope (List separately in addition to code for primary procedure)
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)
SG Ambulatory surgical center (asc) facility 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).
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
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.
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
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).
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.
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.
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.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. 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.
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.)
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
AG Primary physician
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
PT Colorectal cancer screening test; converted to diagnostic test or other procedure
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
2008-01-01 Added First appearance in code book in 2008.
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