ICD-10-CM Billable Code

M65.331

Trigger finger, right middle finger

Clinical Classification Guidelines

Medical Intelligence & Overview

Trigger finger, medically known as stenosing flexor tenosynovitis, is a condition that affects the fingers or thumb, making it difficult to move them smoothly. Specifically, when it involves the right middle finger, it causes pain, stiffness, and a locking sensation during movement. This condition occurs when the flexor tendons that facilitate finger bending become inflamed or swollen, leading to a narrowing of the pulley system that guides tendon movement. As a result, the affected finger may catch or lock in a bent position, often causing discomfort and impairing hand function.

Causes & Symptoms

Clinical Causes: Repeated gripping or pinching motions that strain the fingers Injury or trauma to the finger or hand Inflammatory conditions such as rheumatoid arthritis Certain systemic conditions like diabetes mellitus Aging process leading to degenerative changes in tendons History of faulty hand movements or biomechanical stresses

Key Symptoms: Pain or tenderness at the base of the affected finger A sensation of catching or clicking when moving the finger Stiffness, especially in the morning or after periods of inactivity Finger may lock or catch in a bent position, releasing suddenly with a snap Swelling or thickening over the pulley area Difficulty fully extending or flexing the finger

Diagnostic & Treatment

Diagnosis Path: Diagnosis is primarily clinical, with a healthcare provider examining the finger for characteristic signs such as catching or locking. The provider may observe swelling or a nodule at the pulley. In some cases, imaging studies like ultrasound or MRI may be utilized to assess the extent of tendon thickening or inflammation, especially if other conditions are suspected. A detailed patient history covering occupational activities, injury, and associated health conditions aids in confirming the diagnosis.

Treatment Protocols: Management options vary depending on severity. Non-surgical treatments include:

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 M65.331 a billable ICD-10 code?
Yes, M65.331 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report M65.331?
Clinical documentation must specify the nature of Trigger finger, right middle finger and any associated comorbidities for accurate reporting.

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