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M43.01

Billable

Spondylolysis, occipito-atlanto-axial region

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A stress fracture or defect in the vertebra at the base of the skull where the head connects to the spine (occipito-atlanto-axial region).

Coding Tips

  • •This is a rare location for spondylolysis; verify documentation clearly indicates this upper cervical region
  • •Occipito-atlanto-axial region includes the atlas (C1) and axis (C2) vertebrae

Code Hierarchy

└M43Other deforming dorsopathies└M43.0Spondylolysis└M43.01Spondylolysis, occipito-atlanto-axial region
└M43.01Spondylolysis, occipito-atlanto-axial region

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