ICD 10 Coding Alert

Question: A patient came into the emergency department with a ruptured Achilles tendon. Which diagnosis code should we report for this condition?

Michigan Subscriber

Answer: For a ruptured Achilles tendon, you would report a code from the following list, depending on the affected extremity:

• S86.011A - Strain of right Achilles tendon, initial encounter
• S86.012A - Strain of left Achilles tendon, initial encounter
• S86.019A - Strain of unspecified Achilles tendon, initial encounter

Emergency department visits almost always represent the initial encounter for an evaluation, so what differentiates these codes from one another is that fifth character (1, 2, or 9). This character represents the foot that the doctor treats. In most cases, you'll know whether the left or right Achilles tendon was strained - it should be the rare chart that fails to include laterality.