S62.165K Nondisplaced fracture of pisiform, left wrist, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of pisiform, left wrist, subsequent encounter for fracture with nonunion

Summary

This condition refers to a break in the pisiform bone of the left wrist where the bone fragments remain in their normal anatomical position (nondisplaced), and the fracture has failed to heal (nonunion) during a subsequent encounter for treatment. The pisiform is a small, pea-shaped carpal bone located on the palmar (palm) side of the wrist, embedded within the flexor carpi ulnaris tendon. Nonunion indicates that the fracture site has not progressed to union after an expected healing period, often requiring additional management.

Causes

Typically caused by direct trauma to the wrist, such as a fall onto an outstretched hand, a blow to the palmar side of the wrist, or a crushing injury. High-impact activities or accidents may lead to this specific fracture. Nonunion can result from inadequate immobilization, poor blood supply to the bone, infection, or other factors that impede healing.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or weakened bone structure, especially in older adults.
• Previous wrist injuries or fractures.
• Conditions that impair bone healing, such as diabetes or smoking.

Symptoms

• Persistent pain, swelling, and tenderness in the palmar side of the left wrist.
• Bruising or discoloration around the injury site.
• Limited range of motion or difficulty moving the hand or fingers.
• Possible clicking or grinding sensation with wrist movement.

Diagnosis

Physical examination to assess pain, swelling, and wrist mobility. Imaging tests, such as X-rays, CT scans, or MRIs, to confirm the fracture and evaluate for nonunion. Additional tests may be performed to assess bone healing and rule out infection.

Treatment Options

Treatment may include immobilization with a cast or splint to support the wrist, physical therapy to restore function, and pain management. Surgical intervention, such as bone grafting or internal fixation, may be considered for persistent nonunion. Follow-up imaging is typically used to monitor healing progress.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Regular follow-up appointments are necessary to assess healing and adjust management. Long-term outcomes may include residual pain or limited wrist function if the fracture does not fully heal.

Complications

• Chronic pain or discomfort in the wrist.
• Persistent limited range of motion.
• Increased risk of future fractures due to weakened bone.
• Potential need for surgical intervention if nonunion persists.

Lifestyle & Prevention

• Avoid high-impact activities that risk wrist injury.
• Use protective gear during sports or work.
• Maintain bone health through proper nutrition and exercise.
• Follow post-injury care instructions to support healing.

When to Seek Professional Help

Seek medical attention if pain worsens, swelling increases, or movement becomes more restricted. Prompt evaluation is important if signs of infection (e.g., redness, fever) or new deformity develop.

Tips for Medical Coders

Document the encounter as a subsequent visit for fracture with nonunion. Ensure clinical notes specify the fracture type (nondisplaced), location (left wrist), and the presence of nonunion. Include details on treatment provided and any imaging results to support coding accuracy.