M43.0 – Spondylolysis
ICD-10-CM 2027 diagnosis code · Deforming dorsopathies
ICD-10-CM code
M43.0
- Code
M43.0(claims format:M430)- Description
- Spondylolysis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M40-M43 Deforming dorsopathies
- Parent codes
- M43
Billable codes under M43.0
M43.0 is a header code and cannot be used on claims. Choose the most specific code:
- M43.00 – Spondylolysis, site unspecifiedBillable
- M43.01 – Spondylolysis, occipito-atlanto-axial regionBillable
- M43.02 – Spondylolysis, cervical regionBillable
- M43.03 – Spondylolysis, cervicothoracic regionBillable
- M43.04 – Spondylolysis, thoracic regionBillable
- M43.05 – Spondylolysis, thoracolumbar regionBillable
- M43.06 – Spondylolysis, lumbar regionBillable
- M43.07 – Spondylolysis, lumbosacral regionBillable
- M43.08 – Spondylolysis, sacral and sacrococcygeal regionBillable
- M43.09 – Spondylolysis, multiple sites in spineBillable
Notes for M43.0
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M43 – Other deforming dorsopathies
Excludes1 (not coded here):
- 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.-)
Related codes in M43
- M43.1 – SpondylolisthesisHeader
- M43.2 – Fusion of spineHeader
- M43.3 – Recurrent atlantoaxial dislocation with myelopathyBillable
- M43.4 – Other recurrent atlantoaxial dislocationBillable
- M43.5 – Other recurrent vertebral dislocationHeader
- M43.6 – TorticollisBillable
- M43.8 – Other specified deforming dorsopathiesHeader
- M43.9 – Deforming dorsopathy, unspecifiedBillable
Frequently asked questions
What is ICD-10 code M43.0?
M43.0 is the ICD-10-CM code for spondylolysis, in the block M40-M43 (Deforming dorsopathies).
Is M43.0 a billable code?
No. M43.0 is a header code with more specific child codes; report one of the billable codes listed above.
What category does M43.0 belong to?
It belongs to category M43 – Other deforming dorsopathies.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.