Radiology Coding Alert

Reviewed on May 26, 2015

Question: What is the ICD-9 code for grade I anterolisthesis?

Codify Member

Answer: Anterolisthesis is a form of spondylolisthesis. For acquired anterolisthesis, report 738.4 (Acquired spondylolisthesis). For congenital cases, look to 756.12 (Spondylolisthesis congenital).

The diagnosis: Spondylolisthesis is a spinal condition in which a vertebra slips forward or backward relative to the next vertebra. If the upper vertebral body slips forward on the one below, this is anterolisthesis (antero- means "before" or "front"). Grade I is a minor form of the condition. Typically, the diagnosis is confirmed by MRI.

ICD-10 options: When ICD-10 is effective, you will find diagnosis codes for spondylolisthesis, depending upon the specific location of the slippage in the vertebral column. Look for the most appropriate code in M43.~ series. For congenital diagnoses, see Q76.2 (Congenital spondylolisthesis).