CPT 29086: Cast Application Encasing Middle Finger Joint
CPT code 29086 denotes the application of a cast encasing the middle joint of a finger to treat a flexion contracture that produces an abnormally bent finger. This targeted casting procedure is an important option in hand care for immobilizing the proximal interphalangeal joint to improve alignment and function and to limit progression of contracture. Nationally, proper coding for localized finger casting affects billing accuracy, utilization tracking, and coordination between orthopaedic and hand therapy services.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context of 29086, comparisons with adjacent hand and forearm casting codes, and the typical sites where this service is delivered. The publication summarizes common billing practices, listed modifier options, and diagnostic pairings used with this service. It also highlights coding relationships with related procedures such as broader forearm or gauntlet casts to clarify when 29086 is the primary code. The goal is to equip billing staff, clinicians, and administrators with clear, policy-relevant information for accurate charge capture and claims submission for localized finger joint casting.
Sign up for cpt 29086 policy alerts
Get alerted when payer policies referencing 29086 are released or updated.
Billing Code Overview
CPT code 29086 describes the application of a cast that encases the middle joint of a finger to treat a flexion contracture causing an abnormally bent finger. The procedure is a focused hand/upper-extremity orthopaedic intervention to immobilize and correct joint position in the affected finger.
Service Type: Orthopaedic hand/upper-extremity casting
Typical Site of Service: Outpatient clinic or ambulatory surgical center; hand therapy or orthopaedic clinic
Clinical & Coding Specifications
Clinical Context
A 38-year-old right-hand–dominant construction worker presents to an orthopaedic clinic 10 days after sustaining blunt hand trauma. The patient reports progressive stiffness and an inability to fully extend the proximal interphalangeal joint of the ring finger. Physical exam demonstrates a flexion contracture isolated to the middle joint (proximal interphalangeal joint) with pain at end range and preserved perfusion and sensation. Radiographs show no displaced fracture; the working diagnosis is a PIP joint flexion contracture and soft-tissue contracture following acute injury. The provider discusses nonoperative management and applies a short, molded finger cast encasing the middle joint to hold the finger in a functional extended position.
The clinical workflow includes: initial assessment (history, focused hand exam), imaging review (radiographs to exclude displaced fracture), informed consent and documentation of medical necessity for immobilization, application of the digit cast (material selection and molding to encase the middle joint), post-application neurovascular check, patient instruction on cast care and activity restrictions, and scheduling follow-up for cast assessment, range-of-motion exercises, or escalation to splinting or surgical release if contracture persists.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Unusual procedural service | Use when the service is greater than normally required for this procedure (rare for standard cast application). |
22 | Increased procedural services | Use when the procedure requires substantially greater work, e.g., complex molding for severe deformity. |
25 | Data not available in the input. | Data not available in the input. |
50 | Bilateral procedure | Use when identical cast applications are performed on both hands/fingers during the same encounter. |
52 | Reduced services | Use when the procedure is partially reduced or not completed as originally planned. |
53 | Discontinued procedure | Use when the cast application is started but discontinued due to a complication or change in treatment. |
59 | Distinct procedural service | Use when another procedure on the same day is unrelated and should be reported separately (e.g., unrelated wound care). |
62 | Two surgeons | Use when two surgeons work together as primary surgeons on the same procedure. |
76 | Data not available in the input. | Data not available in the input. |
78 | Unplanned return to the operating/procedure room | Use when re-intervention is required during the global period for complications of the initial cast application. |
LT | Left side | Use to indicate the procedure was performed on the left digit. |
RT | Right side | Use to indicate the procedure was performed on the right digit. |
QK | Medical direction of two, three, or four concurrent anesthesia procedures | Not typically applicable to this procedure; include only if anesthesia direction is billed concurrently under specific circumstances. |
QX | CRNA service with medical direction by a physician | Not typically applicable to this procedure; include only if billed with qualifying anesthesia services. |
XS | Separate structure | Use when the cast application is to a separate anatomical structure and another procedure was performed on the same date. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207X00000X | Orthopaedic Surgery | Common specialty performing hand and finger cast applications and managing finger contractures. |
207XX0004X | Orthopaedic Trauma | Involved when injury-related fractures or acute traumatic contractures require immobilization or coordination of care. |
207N00000X | Family Medicine | May perform initial evaluation and simple cast or splint applications in primary care settings. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
S52.501A | Unspecified fracture of the lower end of right radius, initial encounter for closed fracture | Wrist fractures can alter finger mechanics and may require finger immobilization if adjacent soft tissues or joints are affected. |
S52.502A | Unspecified fracture of the lower end of left radius, initial encounter for closed fracture | Same relevance for left-sided wrist injury with possible associated finger immobilization needs. |
S62.501A | Unspecified fracture of the right wrist and hand, initial encounter for closed fracture | Direct hand/ wrist fractures can be associated with PIP joint contractures or require localized immobilization of digits. |
S62.502A | Unspecified fracture of the left wrist and hand, initial encounter for closed fracture | Same clinical relevance for left hand/wrist fractures. |
M84.431A | Stress fracture, right radius, initial encounter | Stress fractures of the forearm may lead clinicians to immobilize adjacent digits to decrease load or protect healing structures. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
29075 | Application, cast; forearm to palm including thumb (gauntlet cast) | Performed for more proximal wrist or thumb injuries; may be used if immobilization must extend beyond the finger. |
29131 | Application of finger splint; dynamic | Alternative or subsequent treatment to maintain joint extension when a dynamic device is indicated instead of a static cast. |