Orthopedic Coding Alert

Orthopedic Coding:

Coding Finger Fractures Doesn’t Have to Be Daunting

Remember the difference between open and closed fractures.

Finger fractures are a common orthopedic injury, often resulting from putting out a hand to break a fall, crushing a finger between two objects, working with hand tools or power tools, or striking a hand against or being struck by an object — to name a few.

Coding fractures of the fingers can be intimidating. Coders must deal with a total of 14 bones in five digits, open and closed fractures, fractures involving the joint surface, and multiple surgical treatment techniques. Let’s start by unpacking the anatomy of the fingers and types of fractures.

Review Finger Anatomy and Fracture Types

The index, middle, ring, and little fingers each have three phalanges, while the thumb has only two phalanges. Here’s a breakdown:

  • Distal phalanx: The bone in the fingertip, which surgeons may refer to as P3.
  • Middle phalanx: The middle bone in the finger between the distal and proximal phalanges. Surgeons may refer to this bone as P2.
  • Proximal phalanx: The bone closest to the palm, which surgeons may refer to as P1.

Common terms surgeons use to describe fracture types include:

  • Closed: A fracture that does not pierce the skin.
  • Open: A fracture that breaks through the skin, creating an open wound.
  • Displaced: The fracture fragments are not aligned.
  • Nondisplaced: The fracture fragments are in alignment.

Look for the following terms that describe specific fracture patterns:

  • Avulsion fracture: A piece of bone is pulled away from the main bone by a tendon or ligament.
  • Comminuted fracture: The bone breaks into three or more pieces.
  • Tuft fracture: A fingertip fracture at the end of the distal phalanx.
  • Mallet fracture: A type of avulsion fracture of the distal phalanx with injury to the extensor tendon.
  • Jersey finger: A fracture of the distal phalanx associated with flexor digitorum profundus tendon avulsion.
  • Intra-articular fracture: A fracture that involves the joint surface.

Look to the 26720-26756 Codes for Fracture Treatments

Orthopedic surgeons treat finger fractures in a variety of ways. Certain types of finger fractures may be treated in a closed manner with taping or splinting, while other more severe fractures may require surgery to realign and stabilize the bone while it heals.

CPT® codes for treatment of a finger fracture fall within the 26720-26756 range with codes for closed treatment, percutaneous fixation, and open treatment with or without internal fixation.

Closed fracture treatment may be performed with or without manipulation. The term “closed” indicates that the fracture is not surgically opened.

Codes for closed treatment without manipulation include:

  • 26720 (Closed treatment of phalangeal shaft fracture, proximal or middle phalanx, finger or thumb; without manipulation, each)
  • 26740 (Closed treatment of articular fracture, involving metacarpophalangeal or interphalangeal joint; without manipulation, each)
  • 26750 (Closed treatment of distal phalangeal fracture, finger or thumb; without manipulation, each)

Use the following codes for closed treatments with manipulation:

  • 26725 (Closed treatment of phalangeal shaft fracture, proximal or middle phalanx, finger or thumb; with manipulation, with or without skin or skeletal traction, each)
  • 26742 (Closed treatment of articular fracture, involving metacarpophalangeal or interphalangeal joint; with manipulation, each)
  • 26755 (Closed treatment of distal phalangeal fracture, finger or thumb; with manipulation, each)

Percutaneous skeletal fixation is a technique that is neither open nor closed. Fracture fragments are not directly visualized, but may be viewed via imaging, and fixation is placed across the fracture site.

Below are the percutaneous fixation codes:

  • 26727 (Percutaneous skeletal fixation of unstable phalangeal shaft fracture, proximal or middle phalanx, finger or thumb, with manipulation, each)
  • 26756 (Percutaneous skeletal fixation of distal phalangeal fracture, finger or thumb, each)

Open fracture treatment involves surgical exposure and direct visualization of the fracture site with or without internal fixation or placement of an intramedullary device via surgical exposure remote from the fracture site.

Assign one of the following codes for an open treatment:

  • 26735 (Open treatment of phalangeal shaft fracture, proximal or middle phalanx, finger or thumb, includes internal fixation, when performed, each)
  • 26746 (Open treatment of articular fracture, involving metacarpophalangeal or interphalangeal joint, includes internal fixation, when performed, each)
  • 26765 (Open treatment of distal phalangeal fracture, finger or thumb, includes internal fixation, when performed, each)

Open fracture treatments may require surgical debridement prior to definitive repair. Use a code from 11010-11012 (Debridement including removal of foreign material at the site of an open fracture and/or an open dislocation (eg, excisional debridement) …) to report the debridement.

Examine These Finger Fracture Coding Examples

Let’s code some finger fractures.

Example 1: The surgeon diagnoses a patient with a closed displaced intra-articular fracture of the left index finger middle phalanx involving the distal interphalangeal (DIP) joint. The patient undergoes open reduction with the insertion of K wires.

ICD-10-CM code: S62.621A (Displaced fracture of middle phalanx of left index finger, initial encounter for closed fracture)

CPT® code: 26746

Example 2: A patient’s right little finger is caught in a slamming door, and they sustained an open, displaced distal phalanx fracture. The surgeon performs debridement of the open wound including bone, and then performs percutaneous fixation of the fracture.

ICD-10-CM code: S62.636B (Displaced fracture of distal phalanx of right little finger, initial encounter for open fracture)

CPT® codes: 26756 and 11012 (Debridement including removal of foreign material at the site of an open fracture and/or an open dislocation (eg, excisional debridement); skin, subcutaneous tissue, muscle fascia, muscle, and bone).

Heidi Stout, CPC, COSC, President, Coder on Call, Inc.