I’m working on a research project for my company but I haven’t been able to find any information regarding correct coding of Septic Arthritis of Lumbar/Cervical/Thoracic.

When you look in the index of the code book there are 2 code options. I’m hoping someone can help point me to information that will help me understand when to code the M00.88 and when to choose M46.5x.

Arthritis
Septic (any site except spine) – see Arthritis, pyogenic or pyemic
Spine – see spondylopathy, infective
Arthritis
Pyogenic/pyemic (any site except spine)
Bacterial NEC – M00.9
Vertebra – M00.88
Spondylopathy
Infective NEC – M46.50
Cervical – M46.52
Lumbar – M46.56
Thoracic – M46.54

Thank you!