M43.27 is the authoritative medical code for Fusion of spine, lumbosacral region. This classification is used in medical billing and clinical recording to specify the clinical criteria for fusion of spine, lumbosacral region (ICD-10-CM M43.27), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Fusion of spine, lumbosacral region is a billable ICD-10-CM diagnosis code M43.27. Excludes1 (not coded here): ankylosing spondylitis M45.0-; congenital fusion of spine Q76.4; 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. Excludes2 (not included here): arthrodesis status Z98.1; pseudoarthrosis after fusion or arthrodesis M96.0.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for M43.27 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- ankylosing spondylitis M45.0-
- congenital fusion of spine Q76.4
- 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
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- arthrodesis status Z98.1
- pseudoarthrosis after fusion or arthrodesis M96.0
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with M43.27?
Per official ICD-10-CM Excludes1 instructions, M43.27 must not be reported together with: ankylosing spondylitis (M45.0-); congenital fusion of spine (Q76.4); congenital spondylolysis and spondylolisthesis (Q76.2); hemivertebra (Q76.3-Q76.4).
Can M43.27 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, M43.27 and the following are not considered part of each other and may both be reported when both conditions are present: arthrodesis status (Z98.1); pseudoarthrosis after fusion or arthrodesis (M96.0).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to M43.27 in its code family, with their registry titles.
- M43 — Other deforming dorsopathies
- M43.0 — Spondylolysis
- M43.00 — Spondylolysis, site unspecified
- M43.01 — Spondylolysis, occipito-atlanto-axial region
- M43.02 — Spondylolysis, cervical region
- M43.03 — Spondylolysis, cervicothoracic region
- M43.04 — Spondylolysis, thoracic region
- M43.05 — Spondylolysis, thoracolumbar region
- M43.06 — Spondylolysis, lumbar region
- M43.07 — Spondylolysis, lumbosacral region
View all 40 codes in the M43 family
Indexed Clinical Terms (3)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Ankylosis (fibrous) (osseous) (joint), lumbosacral (joint)
- Fusion, fused (congenital), lumbosacral (acquired)
- Fusion, fused (congenital), spine NEC (acquired), lumbosacral region