M43.27 Fusion of spine, lumbosacral region
Billable ICD-10-CM code, FY2026.
Applies from M43 Other deforming dorsopathies
Excludes1 (never code together)
- 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.-)
Applies from M43.2 Fusion of spine
Applicable to
- Ankylosis of spinal joint
Excludes1 (never code together)
- ankylosing spondylitis (M45.0-)
- congenital fusion of spine (Q76.4)
Excludes2 (not included here)
- arthrodesis status (Z98.1)
- pseudoarthrosis after fusion or arthrodesis (M96.0)
MS-DRG index
Defines the logic of DRG(s) 551-552 in MDC 08.
Approximate ICD-9-CM (GEMs)
724.6 Disorders of sacrum (approximate)724.9 Other unspecified back disorders (approximate)
Code annotations containing back-references to M43.27
Back-references to M43.2
- Type 2 Excludes:
M24.6 Ankylosis of joint ("spine (M43.2-)")
Back-references to M43
- Type 2 Excludes:
M95 Other acquired deformities of musculoskeletal system and connective tissue ("deforming dorsopathies (M40-M43)")
Diagnosis Index entries for M43.27
- Ankylosis (fibrous) (osseous) (joint) › lumbosacral (joint)
- Fusion, fused (congenital) › lumbosacral (acquired)
- Fusion, fused (congenital) › spine (acquired) NEC › lumbosacral region
Nearby codes
M43.22 Fusion of spine, cervical regionM43.23 Fusion of spine, cervicothoracic regionM43.24 Fusion of spine, thoracic regionM43.25 Fusion of spine, thoracolumbar regionM43.26 Fusion of spine, lumbar regionM43.27 Fusion of spine, lumbosacral region (this code)M43.28 Fusion of spine, sacral and sacrococcygeal regionM43.3 Recurrent atlantoaxial dislocation with myelopathyM43.4 Other recurrent atlantoaxial dislocationM43.5 Other recurrent vertebral dislocationM43.5X Other recurrent vertebral dislocation