S92.315S Nondisplaced fracture of first metatarsal bone, left foot, sequela

Name of the Condition

• Nondisplaced fracture of first metatarsal bone, left foot, sequela
• ICD-10 Code: S92.315S

Summary

A sequela of a nondisplaced fracture of the first metatarsal bone in the left foot refers to the residual effects or complications that persist after the initial injury has healed. The first metatarsal is the long bone connecting the big toe to the midfoot and is a primary weight-bearing structure. In this case, the fracture fragments remained in their normal alignment during the acute phase, but the sequela indicates ongoing symptoms or structural changes resulting from the prior injury. This condition is localized to the left foot and may involve chronic pain, stiffness, or functional limitations.

Causes

The sequela arises from a prior nondisplaced fracture of the first metatarsal bone in the left foot. The original injury typically resulted from direct trauma, such as a fall, sports injury, or impact, where the bone fragments did not displace. Over time, incomplete healing, malunion, or persistent stress on the affected area can lead to residual symptoms. The sequela represents the long-term consequences of the initial fracture, even if the bone alignment was maintained during the acute phase.

Risk Factors

• Inadequate initial treatment or rehabilitation of the original fracture
• High-impact activities or weight-bearing stress on the left foot
• Underlying conditions that impair bone healing, such as diabetes or vascular disease
• Advanced age, which may reduce bone density and healing capacity
• Previous foot injuries or fractures that weaken the structural integrity of the area

Symptoms

• Chronic pain or discomfort in the left foot, particularly at the base of the big toe
• Stiffness or reduced range of motion in the left foot or big toe
• Swelling or tenderness that persists beyond the normal healing period
• Difficulty bearing weight on the left foot during walking or standing
• Visible deformity or alignment changes in the left foot (rare, but possible)

Diagnosis

Diagnosis of the sequela involves a thorough clinical evaluation, including a review of the patient’s medical history and prior fracture details. Physical examination focuses on assessing pain, swelling, and functional limitations in the left foot. Imaging studies, such as X-rays or MRI, may be used to evaluate the healing status of the first metatarsal and identify any residual structural changes. The diagnosis is confirmed by correlating current symptoms with evidence of the prior nondisplaced fracture and ruling out other conditions.

Treatment Options

Treatment aims to manage symptoms and improve function. Conservative approaches include rest, activity modification, and pain management with over-the-counter or prescription medications. Physical therapy may help restore mobility and strength. Orthotic devices or supportive footwear can reduce stress on the left foot. In cases of significant functional impairment, surgical intervention to correct malunion or remove scar tissue may be considered. Treatment is tailored to the severity of symptoms and the impact on daily activities.

Prognosis and Follow-Up

The prognosis for a sequela of a nondisplaced first metatarsal fracture varies. Many patients experience improvement with conservative management, though some may have persistent mild symptoms. Regular follow-up with a healthcare provider is important to monitor healing and adjust treatment as needed. Long-term outcomes depend on the extent of the original injury, adherence to rehabilitation, and any underlying health conditions. Most patients can return to normal activities with appropriate care, though high-impact activities may require modification.

Complications

Potential complications include chronic pain, persistent stiffness, or reduced mobility in the left foot. In rare cases, malunion (abnormal healing) or nonunion (failure to heal) of the first metatarsal may occur, requiring further intervention. Nerve damage or arthritis in the big toe joint are also possible long-term effects. Early recognition and management of symptoms can help minimize these risks.

Lifestyle & Prevention

Lifestyle modifications, such as wearing supportive footwear and avoiding activities that stress the left foot, can help manage symptoms. Strengthening exercises for the foot and ankle may improve stability. Preventing future injuries by maintaining a healthy weight and using proper technique during physical activities is important. For those with a history of foot fractures, regular check-ups can help detect and address issues early.

When to Seek Professional Help

Seek medical attention if symptoms worsen, new pain or swelling develops, or functional limitations increase. Signs of infection, such as redness, warmth, or fever, require prompt evaluation. If conservative treatments fail to improve symptoms after several weeks, a healthcare provider can assess for underlying issues and recommend further interventions.

Tips for Medical Coders

When coding S92.315S, ensure the documentation clearly indicates the condition is a sequela of a prior nondisplaced fracture of the first metatarsal bone in the left foot. The term "sequela" must be supported by evidence of residual effects or complications from the original injury. Verify that the laterality (left foot) and bone involved (first metatarsal) are accurately documented. Avoid coding for acute fractures or other unrelated conditions. Confirm that the sequela is not better described by another code and that the diagnosis aligns with the clinical findings.