M43.2 – Fusion of spine
ICD-10-CM 2027 diagnosis code · Deforming dorsopathies
ICD-10-CM code
M43.2
- Code
M43.2(claims format:M432)- Description
- Fusion of spine
- 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 M43.2
M43.2 is a header code and cannot be used on claims. Choose the most specific code:
- M43.20 – Fusion of spine, site unspecifiedBillable
- M43.21 – Fusion of spine, occipito-atlanto-axial regionBillable
- M43.22 – Fusion of spine, cervical regionBillable
- M43.23 – Fusion of spine, cervicothoracic regionBillable
- M43.24 – Fusion of spine, thoracic regionBillable
- M43.25 – Fusion of spine, thoracolumbar regionBillable
- M43.26 – Fusion of spine, lumbar regionBillable
- M43.27 – Fusion of spine, lumbosacral regionBillable
- M43.28 – Fusion of spine, sacral and sacrococcygeal regionBillable
Notes for M43.2
Applicable to:
- Ankylosis of spinal joint
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
- M43.0 – SpondylolysisHeader
- M43.1 – SpondylolisthesisHeader
- 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 M43.2?
M43.2 is the ICD-10-CM code for fusion of spine, in the block M40-M43 (Deforming dorsopathies).
Is M43.2 a billable code?
No. M43.2 is a header code with more specific child codes; report one of the billable codes listed above.
What category does M43.2 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.