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

Arthrodesis, great toe; metatarsophalangeal joint

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 28750 refers to the surgical technique known as arthrodesis of the great toe, specifically targeting the metatarsophalangeal joint. Arthrodesis is a surgical procedure that involves the fusion of a joint, which is achieved by eliminating the articular cartilage and stabilizing the bones involved. In this case, the procedure focuses on the great toe, which plays a crucial role in balance and mobility. The surgery begins with an incision made on the lateral side of the great toe, ensuring that surrounding nerves and blood vessels are carefully protected during the process. Once the joint is accessed, the articular cartilage is excised, allowing for the preparation of the bone surfaces. The metatarsal head and the proximal phalanx, or alternatively the proximal and distal phalanges, are then prepared using an osteotome to expose cancellous bone. This preparation is essential for achieving a solid fusion. To stabilize the joint during the healing process, internal fixation devices such as pins, screws, staples, or small plates are employed. After the fixation is in place, the incision is closed, and a bulky dressing is applied to protect the surgical site. This procedure is indicated for various conditions affecting the metatarsophalangeal joint, and it is important to use the correct CPT® code, 28750, for billing purposes, distinguishing it from other related procedures such as the fusion of the interphalangeal joint, which is coded as 28755.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The indications for performing arthrodesis of the great toe at the metatarsophalangeal joint include a variety of conditions that may lead to pain, instability, or dysfunction of the joint. These conditions may encompass:

  • Severe arthritis - This includes osteoarthritis or rheumatoid arthritis that has resulted in significant joint degeneration and pain.
  • Hallux valgus - A deformity characterized by lateral deviation of the great toe, which can cause pain and difficulty in ambulation.
  • Joint instability - Conditions that lead to excessive movement or instability of the metatarsophalangeal joint, causing discomfort during weight-bearing activities.
  • Trauma - Fractures or injuries to the great toe that compromise the integrity of the joint may necessitate surgical intervention.

2. Procedure

The procedure for arthrodesis of the great toe involves several critical steps to ensure successful fusion of the metatarsophalangeal joint. The process begins with:

  • Step 1: Incision - A surgical incision is made over the lateral aspect of the great toe. This careful approach is essential to minimize damage to surrounding nerves and blood vessels, which are vital for toe function and sensation.
  • Step 2: Joint Exposure - Once the incision is made, the surgeon exposes the joint by carefully dissecting the surrounding tissues. This step is crucial for accessing the joint surfaces that need to be prepared for fusion.
  • Step 3: Cartilage Excision - The articular cartilage on both the metatarsal head and the proximal phalanx is excised. This removal is necessary to prepare the bone surfaces for direct contact, which is essential for achieving a successful fusion.
  • Step 4: Bone Preparation - The articular surfaces of the metatarsal head and proximal phalanx, or alternatively the proximal phalanx and distal phalanx, are scaled using an osteotome. This technique exposes the cancellous bone, which is critical for the fusion process.
  • Step 5: Internal Fixation - To stabilize the joint during the healing process, internal fixation devices such as pins, screws, staples, or a small plate are placed through the bones and across the joint. This stabilization is vital to ensure that the bones remain in close contact while they heal and fuse together.
  • Step 6: Closure - After the fixation is securely in place, the incision is closed using appropriate suturing techniques. A bulky dressing is then applied to protect the surgical site and support the healing process.

3. Post-Procedure

Post-procedure care following arthrodesis of the great toe is essential for optimal recovery. Patients are typically advised to keep the foot elevated to reduce swelling and to avoid putting weight on the affected toe for a specified period. A follow-up appointment is usually scheduled to monitor the healing process and to assess the stability of the fixation. Physical therapy may be recommended to help restore mobility and strength in the toe and foot once healing has progressed. Patients should also be informed about signs of complications, such as increased pain, swelling, or signs of infection, and instructed to contact their healthcare provider if these occur.

Short Descr FUSION OF BIG TOE JOINT
Medium Descr ARTHRODESIS GREAT TOE METATARSOPHALANGEAL JOINT
Long Descr Arthrodesis, great toe; metatarsophalangeal joint
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) 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 Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Device-intensive procedure added to ASC list in CY 2008 or later; paid at adjusted rate.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P5B - Ambulatory procedures - musculoskeletal
MUE 1
CCS Clinical Classification 162 - Other OR therapeutic procedures on joints

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

20705 Add-on Code MPFS Status: Active Code APC N Removal of drug-delivery device(s), intra-articular (List separately in addition to code for primary procedure)
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)
T5 Right foot, great toe
TA Left foot, great toe
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
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
SG Ambulatory surgical center (asc) facility service
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
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).
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.
27 Multiple outpatient hospital e/m encounters on the same date: for hospital outpatient reporting purposes, utilization of hospital resources related to separate and distinct e/m encounters performed in multiple outpatient hospital settings on the same date may be reported by adding modifier 27 to each appropriate level outpatient and/or emergency department e/m code(s). this modifier provides a means of reporting circumstances involving evaluation and management services provided by physician(s) in more than one (multiple) outpatient hospital setting(s) (eg, hospital emergency department, clinic). note: this modifier is not to be used for physician reporting of multiple e/m services performed by the same physician on the same date. for physician reporting of all outpatient evaluation and management services provided by the same physician on the same date and performed in multiple outpatient setting(s) (eg, hospital emergency department, clinic), see evaluation and management, emergency department, or preventive medicine services codes.
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).
55 Postoperative management only: when 1 physician or other qualified health care professional performed the postoperative management and another performed the surgical procedure, the postoperative component may be identified by adding modifier 55 to the usual procedure number.
56 Preoperative management only: when 1 physician or other qualified health care professional performed the preoperative care and evaluation and another performed the surgical procedure, the preoperative component may be identified by adding modifier 56 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.
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.
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.)
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)
CR Catastrophe/disaster related
ER Items and services furnished by a provider-based, off-campus emergency department
F5 Right hand, thumb
FA Left hand, thumb
GA Waiver of liability statement issued as required by payer policy, individual case
KX Requirements specified in the medical policy have been met
SA Nurse practitioner rendering service in collaboration with a physician
T1 Left foot, second digit
T2 Left foot, third digit
T4 Left foot, fifth digit
T6 Right foot, second digit
T7 Right foot, third digit
T8 Right foot, fourth digit
T9 Right foot, fifth digit
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
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
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"