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M40.37

Billable

Flatback syndrome, lumbosacral region

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

What This Code Means

Flatback syndrome affecting the area where the lower back meets the sacrum (lumbosacral region), characterized by loss of normal spinal curvature.

Coding Tips

  • •This code specifies the lumbosacral junction; verify documentation clearly indicates involvement at this specific location
  • •Consider if this is post-surgical or related to degenerative changes for complete clinical picture

Code Hierarchy

└M40Kyphosis and lordosis└M40.3Flatback syndrome└M40.37Flatback syndrome, lumbosacral region
└M40.37Flatback syndrome, lumbosacral region

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