S62.166S Nondisplaced fracture of pisiform, unspecified wrist, sequela

Name of the Condition

• Nondisplaced fracture of pisiform, unspecified wrist, sequela

Summary

This condition refers to a previously sustained break in the pisiform bone of the wrist where the bone fragments remained in their normal anatomical position, and the current state represents the residual effects (sequela) of that injury. 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. Nondisplaced fractures typically result from trauma and may involve minimal disruption to surrounding structures, preserving wrist stability and function. The sequela phase indicates the condition is no longer acute but has lasting effects from the prior fracture.

Causes

The underlying cause is a prior traumatic event that resulted in a nondisplaced fracture of the pisiform bone. This could include 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. The sequela phase reflects the long-term consequences of the initial injury, rather than an active fracture.

Risk Factors

• Prior wrist trauma or fracture history.
• Activities or occupations with a high risk of falls or direct wrist impact.
• Underlying bone conditions that may have contributed to the initial fracture risk.

Symptoms

• Chronic pain or discomfort in the palmar side of the wrist.
• Persistent swelling or tenderness at the injury site.
• Reduced range of motion or stiffness in the wrist.
• Possible functional limitations in hand or finger movement.
• Visible or palpable changes in the wrist contour (in some cases).

Diagnosis

Physical examination to assess chronic pain, swelling, and wrist mobility. Imaging tests, such as X-rays, CT scans, or MRIs, to evaluate residual bone alignment and soft tissue changes. Clinical correlation with the patient’s history of prior fracture is essential to confirm the sequela diagnosis.

Treatment Options

Management focuses on alleviating symptoms and restoring function. This may include:

• Pain management with medications or physical therapy.
• Wrist bracing or splinting to provide support.
• Occupational therapy to improve hand function.
• Surgical intervention (rarely) for persistent functional impairment.

Prognosis and Follow-Up

Most patients experience gradual improvement in symptoms with appropriate management. Long-term outcomes depend on the severity of the initial injury and adherence to rehabilitation. Regular follow-up may be necessary to monitor for complications or functional recovery.

Complications

• Chronic pain or arthritis in the wrist.
• Persistent stiffness or limited mobility.
• Nerve compression or tendon irritation.
• Rarely, delayed union or malunion of the prior fracture.

Lifestyle & Prevention

• Avoid repetitive or high-impact wrist activities to reduce strain.
• Use protective gear during sports or high-risk activities.
• Maintain bone health through proper nutrition and exercise.
• Follow post-injury rehabilitation protocols to minimize long-term effects.

When to Seek Professional Help

Seek medical attention if symptoms worsen, new pain or swelling develops, or functional limitations interfere with daily activities. Prompt evaluation is important to address complications or adjust treatment plans.

Tips for Medical Coders

This code is used for the sequela (residual) state of a nondisplaced pisiform fracture. Documentation should clearly indicate the prior fracture and its residual effects. Ensure the encounter aligns with the sequela phase, as acute fracture codes are not applicable. Verify that the wrist and pisiform bone are specified, and no other complications or active treatments for the initial fracture are present.