M71.332 Other bursal cyst, left wrist

ICD10CM code

#### Name of the Condition
- Other Bursal Cyst, Left Wrist
- Sometimes referred to as a bursal sac cyst or synovial cyst.

#### Summary
A bursal cyst in the left wrist is a fluid-filled sac that forms over a joint or tendon in the wrist, usually causing a noticeable swelling and sometimes discomfort. These cysts are non-cancerous and form due to irritation or inflammation of the bursa, a small, lubricating sac that reduces friction between moving tissues.

#### Causes
- Repetitive use or overuse of the wrist.
- Injury or trauma to the joint.
- Inflammation disorders such as arthritis.

#### Risk Factors
- Repeated stress or repetitive movements involving the wrist.
- Previous wrist injuries.
- Occupations or hobbies requiring extensive wrist movement (e.g., typing, sports).

#### Symptoms
- Swelling or a visible lump in the wrist.
- Pain or tenderness near the cyst, especially with movement.
- Limited range of motion in the wrist.

#### Diagnosis
- Physical exam to assess cyst characteristics.
- Imaging tests like an MRI or ultrasound to differentiate from other conditions.
- Aspiration to analyze the fluid if diagnosis is uncertain.

#### Treatment Options
- Observation for cysts causing no significant symptoms.
- Aspiration to drain the fluid and reduce swelling.
- Corticosteroid injections to reduce inflammation.
- Surgical removal for persistent, painful, or recurrent cysts.

#### Prognosis and Follow-Up
- Many cysts resolve on their own; others may require intervention.
- Regular monitoring is essential to ascertain if further treatment is necessary.
- Post-treatment follow-ups to ensure the cyst has not recurred.

#### Complications
- Persistent pain or deformity.
- Recurrent cysts may necessitate further treatment.
- In rare cases, infection of the cyst if left untreated.

#### Lifestyle & Prevention
- Ergonomic adjustments and breaks to minimize wrist strain.
- Strengthening exercises for the wrist.
- Protective gear when engaging in high-impact activities.

#### When to Seek Professional Help
- Rapidly growing swelling or persistent pain.
- Difficulty or pain when moving the wrist.
- Signs of infection, such as redness or heat.

#### Additional Resources
- American Society for Surgery of the Hand: [handcare.org](https://handcare.org)
- Arthritis Foundation: [arthritis.org](https://arthritis.org)

#### Tips for Medical Coders
- Ensure the condition is specified as affecting the left wrist for accurate coding (M71.332).
- Confirm documentation clearly distinguishes it from similar conditions like ganglion cysts.
- Be mindful of updates to guidelines for coding related musculoskeletal conditions.

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