Skip to content
HCC Buddy home

M43.4

Billable

Other recurrent atlantoaxial dislocation

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

What This Code Means

A condition where the top two vertebrae in the neck repeatedly slip out of alignment without causing spinal cord compression.

Coding Tips

  • •Differentiate from M43.3 by confirming absence of myelopathy; document only mechanical instability without neurological involvement
  • •Verify recurrent nature is documented; single episodes may be coded differently

Open M43.4 in the Interactive Encoder

See full code details, AI coding tips, HCC mappings, and related codes in our interactive encoder. Start your 14-day Pro trial — no credit card required.

Open in EncoderStart 14-Day Pro Trial