Acquired forward displacement of one thoracic vertebra over the one below it, localized to the mid-back (T1–T12) spinal region and classified as a deforming dorsopathy under ICD-10-CM category M43.1.

Documentation tips

What should appear in the chart to support M43.14.

Source · Editorial brief grounded in 5 cited references ↓

• Provider must explicitly name the thoracic region (T1–T12) in the assessment — vague entries such as 'mid-back spondylolisthesis' are insufficient for M43.14 and force a drop to M43.10.
• Imaging reports should specify the level(s) involved (e.g., T8-T9), degree of translation, and whether the slip is degenerative, isthmic, or of other etiology to support medical necessity.
• Document neurologic status: presence or absence of thoracic myelopathy, radiculopathy, or cord compression, as these affect additional code assignment and justify procedural intensity.
• If conservative management has been attempted (physical therapy, bracing, injections), note duration and response to support surgical authorization when applicable.
• Distinguish acquired spondylolisthesis from congenital origin (Q76.2) in the clinical note — payer auditors look for this distinction when M43.14 appears on a claim.

Related CPT procedures

Procedure codes commonly billed with M43.14. Linking the right diagnosis to the right procedure is what establishes medical necessity.

Source · CMS LCDs · AAOS specialty guidance · claims-pattern analysis

Common coding pitfalls

The recurring mistakes coders make with M43.14 and adjacent codes.

Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓

• Coding M43.14 for acute traumatic thoracic vertebral displacement is incorrect — traumatic fracture-dislocations map to S-code fracture categories, which are explicitly excluded under M43.1.
• Using M43.10 (site unspecified) when the thoracic region is clearly documented in the record — specificity is required and auditable.
• Confusing thoracolumbar junction slips (T12–L1) with purely thoracic slips: if the slip is at the thoracolumbar junction, M43.15 is the correct code, not M43.14.
• Omitting concomitant thoracic spinal stenosis (M48.04) when imaging shows canal compromise — failure to code secondary conditions can understate complexity and reduce reimbursement.
• Assigning M43.14 based on spondylolysis alone (pars defect without vertebral slip) — spondylolysis of the thoracic region codes to M43.04, a distinct and non-interchangeable code.

Clinical context

Source · Editorial summary grounded in 5 cited references ↓

Sibling codes

Other billable codes under M43.1 (laterality / anatomic variants).