In simple words: The doctor uses sound waves to measure the length of the eye. This helps diagnose eye problems and determine the correct lens power for cataract surgery.

This CPT code encompasses ophthalmic biometry utilizing A-scan ultrasound echography.The procedure involves measuring the axial length of the eye using high-frequency sound waves to obtain one-dimensional data on ocular structures. This data is crucial for diagnosing various eye disorders, including tumors, hemorrhages, and retinal detachments, and for determining the appropriate power of an intraocular lens (IOL) during cataract surgery.

Example 1: A patient presents for cataract surgery.An A-scan ultrasound is performed to determine the axial length of the eye, which is essential for calculating the appropriate intraocular lens power.The procedure is billed using CPT code 76516., A patient presents with suspected retinal detachment. An A-scan ultrasound is used to visualize the structures of the eye and measure the axial length, aiding in the diagnosis and management of the condition. CPT code 76516 is billed., A pediatric patient is undergoing myopia management.An A-scan ultrasound is performed to assess axial length as part of the management plan. The appropriate CPT code is 76516. Modifiers may be added depending on whether one or both eyes are measured.

* Permanently recorded images are not required for this specific code.* A final, written report should be included in the patient's medical record.* The prescription for an intraocular lens can serve as the written report.* Clinical indication for the biometric measurements should be documented.

** Always refer to the most current CPT codebook and payer guidelines for the most up-to-date information on coding, reimbursement, and modifiers.