The patient with severe strabismus visited the ophthalmologist clinic for a strabismus correction surgery. The ophthalmologist performed the surgery by correcting two horizontal muscles and one vertical muscle in the patient’s right eye. The physician then used a transposition procedure on the superior oblique muscle in order to further correct the misalignment. What is the correct way to code for the procedure?
Explanation
Answer: B - The correct codes for this procedure are: 67312 (Correction of the Two Horizontal Muscles), 67314 (Correction of One Vertical Muscle), and67320 (Transposition Procedure to Correct the Superior Oblique Muscle). Code 67318 is also incorrect. Although code 67320 is used for the correction of the superior oblique muscle, it does not include the use of the transposition procedure. Modifier -51 is also not necessary on code 67320, as it is an add-on code, and add-on codes are modifier-51 exempt.
