M43.11
Spondylolisthesis, occipito-atlanto-axial region
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 21 never code together
M43code
Excludes1
- congenital spondylolysis and spondylolisthesis (Q76.2)Q76.2
- hemivertebra (Q76.3-Q76.4)Q76.3-Q76.4
- Klippel-Feil syndrome (Q76.1)Q76.1
- lumbarization and sacralization (Q76.4)Q76.4
- platyspondylisis (Q76.4)Q76.4
- spina bifida occulta (Q76.0)Q76.0
- spinal curvature in osteoporosis (M80.-)M80.-
- spinal curvature in Paget's disease of bone [osteitis deformans] (M88.-)M88.-
M43.1code
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 1
M00-M99chapter
Notes
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Index entries leading here 1
Alongside this code 9 same parent — M43.1
M43.10 Spondylolisthesis, site unspecified M43.12 Spondylolisthesis, cervical region M43.13 Spondylolisthesis, cervicothoracic region M43.14 Spondylolisthesis, thoracic region M43.15 Spondylolisthesis, thoracolumbar region M43.16 Spondylolisthesis, lumbar region M43.17 Spondylolisthesis, lumbosacral region M43.18 Spondylolisthesis, sacral and sacrococcygeal region M43.19 Spondylolisthesis, multiple sites in spine
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.