ICD code M6700 is used to classify a condition where the Achilles tendon is shorter than normal, affecting an unspecified ankle.
ICD code M6700 is used to classify the medical condition of an acquired short Achilles tendon in an unspecified ankle. This code is part of the International Classification of Diseases (ICD) system, which is used by healthcare providers to document and report diagnoses and conditions. The term "acquired" indicates that the condition developed after birth, rather than being congenital. The Achilles tendon, which connects the calf muscles to the heel bone, may become shortened due to various factors such as injury, prolonged immobilization, or other underlying conditions. This shortening can lead to limited range of motion, discomfort, and difficulty in performing activities that require ankle flexibility. The designation "unspecified ankle" means that the documentation does not specify whether the condition affects the left or right ankle. Proper coding of this condition is crucial for accurate medical records, billing, and treatment planning.
When to use the ICD code M6700 (Short Achilles tendon, acquired, unspecified ankle):
1. Clinical Diagnosis:
- A confirmed diagnosis of a short Achilles tendon, acquired through clinical evaluation.
2. Patient Symptoms:
- Patient reports pain in the heel or back of the ankle.
- Limited range of motion in the ankle joint.
- Difficulty with activities that involve pushing off the foot, such as walking or running.
3. Physical Examination Findings:
- Observation of a shortened Achilles tendon during physical examination.
- Palpation reveals tenderness or tightness in the Achilles tendon area.
4. Imaging Studies:
- MRI or ultrasound imaging confirms the presence of a shortened Achilles tendon.
5. Functional Limitations:
- Patient experiences difficulty with sports or physical activities due to ankle stiffness or pain.
- Impairment in daily activities that require ankle mobility.
6. Exclusion of Other Conditions:
- Other potential causes of heel or ankle pain have been ruled out, such as tendonitis, ruptures, or other musculoskeletal disorders.
7. Treatment Plan:
- A treatment plan is established that may include physical therapy, orthotics, or surgical intervention, indicating the need for a specific diagnosis code for billing and documentation purposes.
Using the ICD code in these scenarios ensures accurate documentation and appropriate reimbursement for the services provided.
For the ICD code M6700, which pertains to a short Achilles tendon (acquired), unspecified ankle, the relevant CPT codes that may be applicable for treatment include:
1. 27650 - Repair, primary, open or percutaneous, ruptured Achilles tendon.
2. 27652 - Repair, primary, open or percutaneous, ruptured Achilles tendon with graft (includes obtaining graft).
3. 27654 - Repair, secondary, Achilles tendon, with or without graft.
4. 27685 - Lengthening or shortening of tendon, leg or ankle; single tendon (separate procedure).
5. 27686 - Lengthening or shortening of tendon, leg or ankle; multiple tendons (separate procedure).
These CPT codes are typically used for surgical interventions related to the Achilles tendon, which may be necessary depending on the severity and specific clinical presentation associated with the ICD code M6700. It is important for healthcare providers to select the appropriate CPT code based on the specific procedure performed.
Discover how MD Clarity's RevFind software can enhance your revenue cycle management by accurately reading your contracts and detecting underpayments for CPT codes associated with ICD code M6700. Schedule a demo today to see how RevFind can help ensure you're receiving the full reimbursement you deserve.

