ICD Code M66.351

ICD code M66.351 is used to classify and document a medical diagnosis of a spontaneous rupture of the flexor tendons in the right thigh. This code is part of the International Classification of Diseases, 10th Revision (ICD-10), which is a standardized system used by healthcare providers to ensure consistent documentation and billing. A spontaneous rupture indicates that the tendon has torn without any apparent external trauma or injury, which can occur due to underlying conditions such as tendon degeneration or overuse. Proper coding of this condition is crucial for accurate medical records, insurance claims, and treatment planning.

When to use the ICD code for spontaneous rupture of flexor tendons in the right thigh, consider the following diagnostic criteria and symptoms:

1. Patient History
- Previous tendon injuries or surgeries in the affected area.
- History of repetitive strain or overuse of the thigh muscles.

2. Clinical Presentation
- Sudden onset of pain in the right thigh.
- Swelling or bruising in the thigh region.

3. Physical Examination Findings
- Palpable defect or gap in the tendon upon examination.
- Limited range of motion in the knee or hip joint.

4. Diagnostic Imaging
- MRI or ultrasound confirming the rupture of the flexor tendons.
- X-rays to rule out associated fractures or other injuries.

5. Functional Impairment
- Difficulty in performing activities that require flexion of the thigh.
- Weakness in the affected limb during movement.

6. Exclusion of Other Conditions
- Ruling out other causes of thigh pain, such as muscle tears or ligament injuries.
- Ensuring no underlying systemic conditions that may contribute to tendon weakness.

7. Timing of Symptoms
- Symptoms occurring acutely, typically following a specific incident or trauma.
- Absence of chronic symptoms prior to the event leading to the rupture.

By adhering to these criteria, healthcare providers can accurately determine the necessity of using the appropriate ICD code for documentation and billing purposes.

For the ICD code M66.351, which pertains to the spontaneous rupture of flexor tendons in the right thigh, the relevant CPT codes that may be applicable for treatment include:

1. 27385 - Suture of infrapatellar tendon (secondary) or muscle rupture (primary) of thigh or knee area.

2. 27386 - Repair, revision, and/or reconstruction of the quadriceps or hamstring muscle (e.g., muscle transfer, muscle advancement, muscle lengthening).

3. 27650 - Repair, primary, open or percutaneous, of ruptured Achilles tendon.

4. 27652 - Repair, primary, open or percutaneous, with or without graft, of ruptured Achilles tendon; with graft (includes obtaining graft).

5. 27654 - Repair, secondary, Achilles tendon, with or without graft.

These CPT codes are examples of procedures that might be considered for addressing tendon ruptures in the thigh area, depending on the specific clinical scenario and surgical approach. It is important for healthcare providers to select the most appropriate CPT code based on the specific details of the procedure performed.

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