S93.326 Dislocation of tarsometatarsal joint of unspecified foot

Name of the Condition

• Dislocation of tarsometatarsal joint of unspecified foot

Summary

This condition involves the complete displacement of the tarsometatarsal joint, which connects the tarsal bones to the metatarsal bones in the midfoot. Dislocation results in joint surfaces separating, leading to pain, instability, and impaired function, particularly during weight-bearing activities.

Causes

Trauma, such as falls, sports injuries, or direct impacts to the foot, is the primary cause. Twisting or rotational forces applied to the foot can lead to joint displacement. High-impact events or sudden movements may also result in dislocation of the tarsometatarsal joint.

Risk Factors

• Participation in high-impact sports or activities with sudden directional changes.
• Previous foot injuries or joint instability.
• Wearing footwear that lacks proper support or stability.
• Uneven terrain or poor surface conditions.

Symptoms

• Pain and swelling in the midfoot area.
• Inability to bear weight or walk normally.
• Visible deformity or misalignment of the foot.
• Bruising or discoloration around the injured joint.
• Tenderness to touch or pressure.

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and joint stability. Imaging tests, such as X-rays, are used to confirm displacement and rule out fractures. CT or MRI may be used to evaluate soft tissue or ligament damage.

Treatment Options

Initial treatment focuses on immobilization of the foot with a cast or boot, rest, ice, compression, and elevation. Pain management may involve medications. Severe cases may require surgical intervention to realign the joint and stabilize it with hardware or sutures. Physical therapy is often recommended during recovery to restore strength and mobility.

Prognosis and Follow-Up

Prognosis depends on the severity of the injury and adherence to treatment. Most patients recover with proper immobilization and rehabilitation, though some may experience long-term stiffness or instability. Follow-up appointments monitor healing and functional recovery, with imaging to assess joint alignment.

Complications

Potential complications include chronic pain, arthritis, or persistent instability in the midfoot. Nerve or vascular damage may occur in severe cases. Incomplete healing or malalignment can lead to difficulty with weight-bearing or altered gait.

Lifestyle & Prevention

Wearing supportive footwear and avoiding uneven surfaces can reduce injury risk. Strengthening foot and ankle muscles through exercise may improve stability. Protective gear during high-impact activities, such as sports, can help prevent trauma.

When to Seek Professional Help

Seek immediate medical attention if you experience severe foot pain, swelling, or deformity after an injury. Inability to bear weight or walk normally warrants prompt evaluation to rule out dislocation or other serious conditions.

Tips for Medical Coders

Document the affected foot (unspecified in this code) and specify if laterality becomes known. Include details on trauma mechanism, imaging results, and treatment approaches to support code accuracy. Ensure documentation aligns with clinical findings to justify the diagnosis.