M21.379
Foot drop, unspecified foot
Clinical Classification Guidelines
Medical Intelligence & Overview
Foot drop is a condition characterized by difficulty lifting the front part of the foot, which can lead to dragging the foot while walking. When the exact cause of foot drop isn't specified, it may be referred to as 'unspecified foot,' and the ICD-10 code M21.379 is used for this diagnosis. This condition results from nerve or muscle damage that impairs normal foot movement, affecting mobility and quality of life.
Causes & Symptoms
Clinical Causes: Nerve injury due to trauma or surgery Peroneal nerve palsy, often caused by compression or injury Neurological disorders such as multiple sclerosis or stroke Herniated disc pressing on nerves Muscle or nerve diseases, like amyotrophic lateral sclerosis (ALS) Prolonged bed rest or immobilization Diabetes mellitus leading to nerve damage Certain infections that affect nerve function
Key Symptoms: Difficulty lifting the front part of the foot (dorsiflexion) Foot dragging while walking High steppage gait pattern to prevent catching the toe Weakness in ankle and foot muscles Possible numbness or tingling sensation in the foot or leg Loss of ankle reflexes in some cases Muscle atrophy over time if nerve damage persists
Diagnostic & Treatment
Diagnosis Path: Diagnosing foot drop involves a comprehensive medical history review and physical examination focusing on nerve and muscle function. Additional tests may include:
Treatment Protocols: Treatment strategies for foot drop aim to improve mobility, address the underlying cause, and prevent complications. Options include:
Clinical Advice & FAQs
Billing Guidance
Is M21.379 a billable ICD-10 code?
Yes, M21.379 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M21.379?
Clinical documentation must specify the nature of Foot drop, unspecified foot and any associated comorbidities for accurate reporting.
Cite this Clinical Reference