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

Endoscopy, wrist, surgical, with release of transverse carpal ligament

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Surgical endoscopy of the wrist, specifically coded as CPT® 29848, involves a minimally invasive procedure aimed at addressing carpal tunnel syndrome (CTS). This condition arises when the transverse carpal ligament, which forms the roof of the carpal tunnel, becomes thickened or inflamed, leading to compression of the median nerve. The carpal tunnel is a narrow passageway located on the anterior side of the wrist that houses the median nerve along with nine flexor tendons that facilitate movement in the hand. Symptoms of CTS typically include numbness, tingling, and pain that can radiate into the fingers and hand, significantly impacting daily activities and quality of life. During the procedure, two small incisions are made—one on the wrist and another in the palm—to allow for the insertion of an endoscope. This instrument provides direct visualization of the surgical site, enabling the surgeon to accurately cut the transverse carpal ligament with a small blade. The endoscopic approach minimizes tissue damage and promotes quicker recovery compared to traditional open surgery, as it reduces scarring and postoperative pain. After the ligament is released, the endoscope is withdrawn, and the incisions are sutured closed, completing the procedure.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure coded as CPT® 29848 is indicated for the treatment of carpal tunnel syndrome (CTS). This condition is characterized by the following:

  • Compression of the Median Nerve - Symptoms such as numbness, tingling, and pain in the hand and fingers due to the swelling of the carpal tunnel.
  • Functional Impairment - Difficulty in performing daily activities that require hand and finger movement, often exacerbated by repetitive wrist motions.
  • Conservative Treatment Failure - Patients who have not responded adequately to non-surgical treatments such as splinting, corticosteroid injections, or physical therapy.

2. Procedure

The procedure involves several key steps to ensure effective release of the transverse carpal ligament:

  • Step 1: Anesthesia Administration - The patient is positioned comfortably, and local anesthesia is administered to minimize discomfort during the procedure.
  • Step 2: Incision Creation - Two small incisions are made; one is located over the anterior aspect of the wrist, and the second is positioned in the palm. These incisions are strategically placed to provide access to the carpal tunnel.
  • Step 3: Endoscope Insertion - An endoscope, a thin tube equipped with a camera and light, is inserted through the incisions. This allows the surgeon to visualize the internal structures of the wrist, including the transverse carpal ligament and median nerve.
  • Step 4: Ligament Release - Using direct visualization through the endoscope, a small blade is introduced to carefully cut the transverse carpal ligament. This step is crucial for relieving pressure on the median nerve.
  • Step 5: Closure of Incisions - After the ligament has been successfully released, the endoscope is removed, and the incisions are closed with sutures. This minimizes scarring and promotes healing.

3. Post-Procedure

Post-procedure care following CPT® 29848 includes monitoring for any immediate complications, such as excessive bleeding or infection at the incision sites. Patients are typically advised to keep the wrist elevated and to apply ice to reduce swelling. A follow-up appointment is usually scheduled to assess healing and to discuss rehabilitation exercises that may be necessary to restore strength and mobility in the wrist and hand. Patients can expect a gradual return to normal activities, with many experiencing relief from symptoms shortly after the procedure.

Short Descr WRIST ENDOSCOPY/SURGERY
Medium Descr NDSC WRST SURG W/RLS TRANSVRS CARPL LIGM
Long Descr Endoscopy, wrist, surgical, with release of transverse carpal ligament
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) P8A - Endoscopy - arthroscopy
MUE 1
CCS Clinical Classification 6 - Decompression peripheral nerve
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)
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).
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.)
SG Ambulatory surgical center (asc) facility 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).
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
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)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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.
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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.
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).
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.)
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
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
ER Items and services furnished by a provider-based, off-campus emergency department
F1 Left hand, second digit
F2 Left hand, third digit
F3 Left hand, fourth digit
F4 Left hand, fifth digit
F5 Right hand, thumb
F6 Right hand, second digit
F7 Right hand, third digit
F8 Right hand, fourth digit
F9 Right hand, fifth digit
FA Left hand, thumb
GA Waiver of liability statement issued as required by payer policy, individual case
GW Service not related to the hospice patient's terminal condition
KT Beneficiary resides in a competitive bidding area and travels outside that competitive bidding area and receives a competitive bid item
KX Requirements specified in the medical policy have been met
PO Excepted service provided at an off-campus, outpatient, provider-based department of a hospital
QS Monitored anesthesia care service
QX Crna service: with medical direction by a physician
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
Date
Action
Notes
2021-01-01 Note Guidelines changed.
1992-01-01 Added First appearance in code book in 1992.
Code
Description
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"