MCMedicalCodingSoftware
M43.1

M43.1: Spondylolisthesis

Non-billable headerICD-10-CM

M43.1 is a non-billable header ICD-10-CM code for spondylolisthesis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • acute traumatic of lumbosacral region (S33.1)
  • acute traumatic of sites other than lumbosacral- code to Fracture, vertebra, by region
  • congenital spondylolisthesis (Q76.2)

Excludes1 inherited from the categories above M43.1

A category’s note binds every code beneath it.

Written on M43: Other deforming dorsopathies

  • congenital spondylolysis and spondylolisthesis (Q76.2)
  • hemivertebra (Q76.3-Q76.4)
  • Klippel-Feil syndrome (Q76.1)
  • lumbarization and sacralization (Q76.4)
  • platyspondylisis (Q76.4)
  • spina bifida occulta (Q76.0)
  • spinal curvature in osteoporosis (M80.-)
  • spinal curvature in Paget's disease of bone [osteitis deformans] (M88.-)

Other codes that can never be billed with M43.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • M43.0Spondylolysis
  • Q76.2Congenital spondylolisthesis

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead M43.1

10 child codes. Green means billable.

Other codes under M43

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.