M75.1

Billabel:
Yes
No

Shoulder lesions — ICD-10 M75.1

Shoulder lesions

Overview

Shoulder lesions, classified under ICD-10 code M75.1, encompass a variety of injuries and conditions affecting the structures of the shoulder joint, including the rotator cuff, labrum, and surrounding soft tissues. These lesions can result from acute trauma or chronic overuse and often lead to pain, reduced range of motion, and functional impairment. Clinically, shoulder lesions are characterized by their impact on daily activities and quality of life, making early diagnosis and appropriate management crucial.

The shoulder joint is a complex structure composed of three primary bones: the humerus, scapula, and clavicle. It is classified as a ball-and-socket joint, allowing for a wide range of motion. Key anatomical components include:

  • Rotator Cuff: A group of four muscles (supraspinatus, infraspinatus, teres minor, subscapularis) that stabilize the humeral head within the glenoid cavity.
  • Glenoid Labrum: A fibrocartilaginous rim that deepens the glenoid cavity and provides stability to the shoulder joint.
  • Bursa: Fluid-filled sacs that reduce friction between moving parts in the shoulder.

Biomechanically, the shoulder relies on a delicate balance of muscular strength and neuromuscular control to maintain stability during dynamic activities such as throwing or lifting. The rotator cuff plays a pivotal role in this stability by centering the humeral head during arm movements.

Comman symptoms

Stage 1: Mild Lesions

  • Symptoms: Localized tenderness, mild pain during overhead activities.
  • Functional Limitations: Minor restrictions in range of motion; patients may report discomfort but can perform daily activities with slight modifications.

Stage 2: Moderate Lesions

  • Symptoms: Persistent pain at rest and during activity, especially with overhead movements; possible swelling.
  • Functional Limitations: Noticeable decrease in range of motion; difficulty with tasks like reaching overhead or behind the back.

Stage 3: Severe Lesions

  • Symptoms: Severe pain that may radiate down the arm; weakness in shoulder abduction and external rotation; potential crepitus (grating sensation).
  • Functional Limitations: Significant impairment in daily activities; patients may struggle with basic tasks such as dressing or lifting objects.

Red Flag

When evaluating a patient with a shoulder lesion coded under ICD-10 M75.1, clinicians should be vigilant for the following red flags that necessitate immediate medical attention or referral to a specialist:

  1. Severe Unexplained Pain: Intense shoulder pain that is disproportionate to the clinical findings may indicate a more serious underlying condition, such as a fracture or malignancy.


  1. Neurological Symptoms: Presence of numbness, tingling, or weakness in the arm or hand could suggest nerve impingement or injury, necessitating prompt evaluation by a neurologist or orthopedic specialist.
  1. Acute Onset of Symptoms: Sudden onset of shoulder pain following trauma or injury, particularly if accompanied by swelling or instability, may require imaging studies and orthopedic referral to rule out fractures or dislocations.
  1. Persistent Symptoms despite Conservative Treatment: If a patient does not show improvement after a standard course of conservative management (e.g., rest, ice, physical therapy) within 6-8 weeks, this may warrant further investigation or specialist referral.
  1. Signs of Infection: Symptoms such as fever, chills, or erythema in the shoulder area may indicate an infectious process, requiring immediate evaluation by an infectious disease specialist or orthopedic surgeon.
  1. History of Cancer: Patients with a history of malignancy presenting with new shoulder pain should be referred for imaging to rule out metastatic disease.

At a Glance

ICD-10: M75.1 | Category: Soft Tissue Disorders | Billable: Yes

Overview

Shoulder lesions, classified under ICD-10 code M75.1, encompass a variety of injuries and conditions affecting the structures of the shoulder joint, including the rotator cuff, labrum, and surrounding soft tissues. These lesions can result from acute trauma or chronic overuse and often lead to pain, reduced range of motion, and functional impairment. Clinically, shoulder lesions are characterized by their impact on daily activities and quality of life, making early diagnosis and appropriate management crucial.

The shoulder joint is a complex structure composed of three primary bones: the humerus, scapula, and clavicle. It is classified as a ball-and-socket joint, allowing for a wide range of motion. Key anatomical components include:

  • Rotator Cuff: A group of four muscles (supraspinatus, infraspinatus, teres minor, subscapularis) that stabilize the humeral head within the glenoid cavity.
  • Glenoid Labrum: A fibrocartilaginous rim that deepens the glenoid cavity and provides stability to the shoulder joint.
  • Bursa: Fluid-filled sacs that reduce friction between moving parts in the shoulder.

Biomechanically, the shoulder relies on a delicate balance of muscular strength and neuromuscular control to maintain stability during dynamic activities such as throwing or lifting. The rotator cuff plays a pivotal role in this stability by centering the humeral head during arm movements.

Causes & Risk Factors

Shoulder lesions can arise from various mechanisms:

  1. Acute Trauma: Falls or direct blows can lead to tears in the rotator cuff or labrum.
  2. Chronic Overuse: Repetitive overhead activities can cause microtrauma to the shoulder structures, leading to degeneration and eventual tearing.

Risk Factors:

  • Age: Increased incidence in individuals over 40 years due to degenerative changes.
  • Occupation: Jobs requiring repetitive overhead motion (e.g., construction workers, athletes).
  • Previous injuries: History of shoulder injuries increases susceptibility.
  • Poor posture: Can lead to altered biomechanics and increased strain on shoulder structures.

Diagnostic Workup

A thorough clinical evaluation is essential for diagnosing shoulder lesions:

History:

  • Onset of symptoms (acute vs. chronic).
  • Mechanism of injury.
  • Previous shoulder problems.

Physical Examination:

  1. Inspection: Look for swelling, asymmetry, or atrophy.
  2. Palpation: Assess for tenderness over the rotator cuff tendons and bursa.
  3. Range of Motion Testing:
  4. Active Range of Motion (AROM): Assess both active elevation and rotation.
  5. Passive Range of Motion (PROM): Evaluate limitations compared to AROM.
  6. Strength Testing: Manual muscle testing for rotator cuff integrity.
  7. Special Tests:
  8. Neer’s Test for impingement.
  9. Hawkins-Kennedy Test for rotator cuff pathology.
  10. Apprehension Test for labral tears.

Imaging Studies:

  • X-rays: To rule out fractures or bony abnormalities.
  • MRI/Ultrasound: To visualize soft tissue structures, including rotator cuff tears or labral injuries.

Treatment & Rehabilitation

Phase 1: Acute Management (0-2 Weeks)

  • Goals: Reduce pain and inflammation.
  • Interventions:
  • Rest and activity modification.
  • Ice application for 15–20 minutes several times a day.
  • Non-steroidal anti-inflammatory drugs (NSAIDs) as needed.

#

Exercises:

  • Pendulum swings
  • Passive range of motion exercises within pain tolerance.

Phase 2: Recovery Phase (2-6 Weeks)

  • Goals: Restore mobility and begin strengthening.
  • Interventions:
  • Gradual return to activity as tolerated.
  • Physical therapy focusing on range of motion exercises.

#

Exercises:

  • Assisted flexion/extension using a stick or strap.
  • Isometric strengthening exercises for rotator cuff muscles.

Phase 3: Strengthening Phase (6-12 Weeks)

  • Goals: Improve strength and functional capabilities.
  • Interventions:
  • Progressive resistance training focusing on rotator cuff strengthening.

#

Exercises:

  • External rotation with resistance bands.
  • Shoulder abduction with light weights.

Phase 4: Functional Phase (12+ Weeks)

  • Goals: Return to sport/work activities safely.
  • Interventions:
  • Sport-specific drills and functional training tailored to individual needs.

#

Exercises:

  • Plyometric exercises such as medicine ball throws.
  • Overhead press with gradual weight increase.

Prevention

Preventing shoulder lesions, including those classified under ICD-10 code M75.1, can involve a combination of ergonomic adjustments, lifestyle changes, and effective risk management strategies. Here are evidence-based approaches:

  1. Ergonomics: Adjust workstations to promote proper posture, ensuring that the shoulders are relaxed and arms supported. Use ergonomic chairs and desks that allow for a neutral shoulder position while typing or performing tasks.


  1. Strengthening Exercises: Incorporate rotator cuff strengthening exercises, such as internal and external rotations, to increase shoulder stability and reduce the risk of injury.


  1. Regular Stretching: Engage in regular stretching routines to enhance flexibility in the shoulder girdle, which can alleviate tension and prevent injuries.


  1. Weight Management: Maintain a healthy weight to reduce the strain on shoulder joints, as excess weight can contribute to musculoskeletal issues.


  1. Risk Management: Identify and modify high-risk activities, such as repetitive overhead motions common in certain occupations or sports, to mitigate the potential for shoulder lesions.

Coding Examples

Patient presents with left shoulder pain after lifting a heavy box. The examination reveals tenderness over the greater tuberosity and limited range of motion. Code as M75.1 because the documentation indicates a specific shoulder lesion characterized by pain and functional impairment, consistent with the ICD-10 description for rotator cuff disorders.

Audit & Compliance

To support medical necessity for coding M75.1 and to prevent claim denials, the following documentation elements are essential:

  1. Detailed History: A thorough account of the patient's symptoms, including onset, duration, and impact on daily activities.


  1. Physical Examination Findings: Document specific findings related to shoulder functionality, including range of motion limits and tenderness locations.


  1. Diagnostic Tests: Include results from imaging studies (e.g., MRI) if performed, to substantiate the diagnosis of a shoulder lesion.


  1. Treatment Plan: Clear documentation of the recommended interventions, including referrals for physical therapy and any prescribed medications.


  1. Follow-Up: Notes about any follow-up visits to track the progression of the condition and response to treatment.

Clinical Example

Subjective: A 45-year-old female presents with a 3-month history of left shoulder pain, which worsens with overhead activities and is accompanied by weakness in her left arm. Objective: On examination, there is notable tenderness over the supraspinatus tendon, and the patient exhibits a positive Neer test. Range of motion is limited in abduction and external rotation. Assessment: The patient has a shoulder lesion, likely a rotator cuff tear, as evidenced by clinical findings and the patient's history. Plan: Order an MRI to confirm the diagnosis, recommend physical therapy focusing on strengthening and flexibility, and prescribe anti-inflammatory medication to manage pain.

Differential Diagnoses

When evaluating shoulder lesions, it is crucial to differentiate them from other conditions that may present similarly:

  1. Rotator Cuff Tear (M75.121): Full-thickness tear versus partial-thickness tear must be differentiated based on imaging findings.
  2. Shoulder Impingement Syndrome (M75.4): Characterized by pain during overhead activities without significant structural damage.
  3. Labral Tear (M75.121): Often associated with instability or clicking sensations during movement.
  4. Subacromial Bursitis (M75.51): Inflammation of the bursa leading to localized pain but typically without significant weakness.

Documentation Best Practices

Accurate documentation is crucial for supporting medical necessity and ensuring appropriate coding for shoulder lesions (ICD-10 M75.1). Here are specific tips to enhance your clinical documentation:

  1. Detail Patient History: Include a comprehensive history of present illness (HPI) that describes the onset, duration, and characteristics of shoulder pain, as well as any previous treatments or interventions.
  1. Clinical Findings: Document specific physical examination findings, including range of motion, strength testing, and any observed deformities or tenderness in the shoulder region.
  1. Imaging and Tests: Include any imaging studies (X-rays, MRI) or diagnostic tests performed, along with the results and how they correlate with the diagnosis of shoulder lesions.
  1. Treatment Plan: Clearly outline the treatment options discussed with the patient, including any referrals made, conservative management strategies, or surgical considerations.
  1. Functional Impact: Describe how the shoulder lesion has affected the patient’s daily activities and quality of life, which can support the need for specific interventions or therapies.
  1. Follow-Up Plan: Document the follow-up plan, including timelines for reassessment, further imaging, or referrals, to demonstrate ongoing management of the condition.

Got questions? We’ve got answers.

Need more help? Reach out to us.

What are common causes of shoulder lesions?
What are some effective treatments for shoulder lesions?
Can I prevent shoulder lesions?
How long does it take to recover from a shoulder lesion?
When should I see a doctor for shoulder pain?