Spondylosis of the thoracic spine causing spinal cord compression and resultant myelopathy — a chronic, degenerative condition involving disc degeneration, facet joint arthrosis, and osteophyte formation at the thoracic vertebral levels.

Documentation tips

What should appear in the chart to support M47.14.

Source · Editorial brief grounded in 5 cited references ↓

• Provider must explicitly link spondylosis to myelopathy — document 'thoracic myelopathy due to spondylosis' or equivalent causal language; 'thoracic spondylosis' and 'myelopathy' listed separately without linkage is insufficient for M47.14.
• Specify the thoracic region (T1–T10) by level in the assessment; if the pathology crosses into the cervicothoracic or thoracolumbar junction, the correct code shifts to M47.13 or M47.15 respectively.
• MRI findings supporting cord compression should be noted: cord signal change (T2 hyperintensity), degree of canal stenosis, disc-osteophyte complex, and affected levels — this supports medical necessity and accurate DRG assignment.
• Document neurological deficits attributed to cord compression: gait ataxia, lower-extremity spasticity, hyperreflexia, Babinski sign, or bowel/bladder dysfunction — these clinical findings validate the myelopathy component.
• Record prior conservative treatment history (physical therapy, bracing, injections) if applicable, as payer policies for surgical authorization under this diagnosis often require documented failure of conservative care.

Related CPT procedures

Procedure codes commonly billed with M47.14. 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 M47.14 and adjacent codes.

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

• Assigning G99.2 (Myelopathy in diseases classified elsewhere) when the cause is spondylosis — G99.2 explicitly excludes myelopathy due to spondylosis (M47.1x), so M47.14 is the correct primary code for spondylotic thoracic myelopathy.
• Using M47.10 (site unspecified) when the thoracic region is clearly documented — drop to unspecified only when the provider genuinely has not specified a spinal region.
• Selecting M47.14 when the pathology is at the thoracolumbar or cervicothoracic junction — review imaging reports and provider documentation for level specificity before assigning a region-specific code.
• Conflating spondylosis with myelopathy (M47.14) and spondylosis with radiculopathy (M47.24) — myelopathy involves spinal cord compression; radiculopathy involves nerve root compression. These are distinct conditions with distinct codes.
• Omitting comorbidities that would drive DRG 551 (with MCC) over DRG 552 (without MCC) — accurate capture of relevant comorbidities has direct reimbursement implications under MS-DRG v43.0.

Clinical context

Source · Editorial summary grounded in 5 cited references ↓

Sibling codes

Other billable codes under M47.1 (laterality / anatomic variants).