ICD-10-CM Billable Code

M20.012

Mallet finger of left finger(s)

Clinical Classification Guidelines

Medical Intelligence & Overview

Mallet finger, also known as baseball finger, is a common injury affecting the distal joint of a finger, typically caused by trauma or force. When it occurs in the left finger(s), it results in an inability to fully straighten the fingertip. This injury involves damage to the extensor tendon that straightens the tip of the finger. Recognizing the signs and understanding the causes can help in seeking appropriate treatment to restore finger function.

Causes & Symptoms

Clinical Causes: Sudden bending or jamming of the fingertip, often during sports activities like baseball or basketball Direct trauma or impact to the tip of the finger Crushing injuries or accidents involving the fingertip Pinching injuries that forcefully flex the finger

Key Symptoms: Inability to straighten the fingertip voluntarily Drooping or drooping of the fingertip Pain at the tip of the finger, especially with movement Swelling and tenderness around the DIP (distal interphalangeal) joint Bruising or discoloration around the injury site Possible deformity or bump at the joint

Diagnostic & Treatment

Diagnosis Path: Diagnosis is typically made based on physical examination of the affected finger. A healthcare professional will assess the range of motion and check for deformity or drooping of the fingertip. Imaging tests like X-rays may be ordered to determine if there is an associated fracture of the distal phalanx or to confirm the extent of tendon injury. Accurate diagnosis guides the appropriate treatment approach.

Treatment Protocols: Treatment options vary depending on the severity of the injury. Common approaches include: - **Splinting:** Immobilizing the fingertip in extension using a dorsal splint for about 6-8 weeks. This allows the damaged tendon to heal. - **Surgical intervention:** In cases where there is an avulsion fracture with a large fragment or when conservative treatment fails, surgery may be necessary to repair the tendon or secure the fracture. - **Follow-up care:** Regular monitoring to ensure proper healing and range of motion exercises after immobilization are important. - **Pain management:** Over-the-counter pain relievers and elevation to reduce swelling. Early treatment generally results in better outcomes and minimizes the risk of permanent deformity or loss of function.

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is M20.012 a billable ICD-10 code?
Yes, M20.012 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report M20.012?
Clinical documentation must specify the nature of Mallet finger of left finger(s) and any associated comorbidities for accurate reporting.

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