ICD-10-CM 2027
ICD-10 code for thoracolumbar region spondylolisthesis
From the official ICD-10-CM alphabetic index entry “Spondylolisthesis (acquired) (degenerative) › thoracolumbar region”. Page updated September 29, 2026.
About coding thoracolumbar region spondylolisthesis
The ICD-10-CM code for thoracolumbar region spondylolisthesis is M43.15 (Spondylolisthesis, thoracolumbar region).
Within M43.1 (spondylolisthesis), M43.15 is specifically for spondylolisthesis, thoracolumbar region. Related codes cover site unspecified (M43.10), occipito-atlanto-axial region (M43.11), cervical region (M43.12), cervicothoracic region (M43.13), thoracic region (M43.14), lumbar region (M43.16), lumbosacral region (M43.17), sacral and sacrococcygeal region (M43.18) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 551 (Medical Back Problems with MCC, relative weight 1.6358) and DRG 552 (Medical Back Problems without MCC, relative weight 0.9584), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about thoracolumbar region spondylolisthesis ICD-10 codes
What is the ICD-10 code for thoracolumbar region spondylolisthesis?
- M43.15 — Spondylolisthesis, thoracolumbar region.
Is M43.15 billable?
- Yes. M43.15 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M43.15 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M43.15 as a principal diagnosis.
Is M43.15 a CC or MCC?
- No. M43.15 is neither a CC nor an MCC under MS-DRG v44.0.