M51: Thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders

Codes under M51 (Thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
M51.0	Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with myelopathy	—
M51.1	Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with radiculopathy	—
M51.2	Other thoracic, thoracolumbar and lumbosacral intervertebral disc displacement	—
M51.3	Other thoracic, thoracolumbar and lumbosacral intervertebral disc degeneration	—
M51.04	Intervertebral disc disorders with myelopathy, thoracic region	✓
M51.4	Schmorl's nodes	—
M51.05	Intervertebral disc disorders with myelopathy, thoracolumbar region	✓
M51.06	Intervertebral disc disorders with myelopathy, lumbar region	✓
M51.8	Other thoracic, thoracolumbar and lumbosacral intervertebral disc disorders	—
M51.9	Unspecified thoracic, thoracolumbar and lumbosacral intervertebral disc disorder	✓
M51.14	Intervertebral disc disorders with radiculopathy, thoracic region	✓
M51.15	Intervertebral disc disorders with radiculopathy, thoracolumbar region	✓
M51.16	Intervertebral disc disorders with radiculopathy, lumbar region	✓
M51.17	Intervertebral disc disorders with radiculopathy, lumbosacral region	✓
M51.24	Other intervertebral disc displacement, thoracic region	✓
M51.25	Other intervertebral disc displacement, thoracolumbar region	✓
M51.26	Other intervertebral disc displacement, lumbar region	✓
M51.27	Other intervertebral disc displacement, lumbosacral region	✓
M51.34	Other intervertebral disc degeneration, thoracic region	✓
M51.35	Other intervertebral disc degeneration, thoracolumbar region	✓
M51.36	Other intervertebral disc degeneration, lumbar region	—
M51.37	Other intervertebral disc degeneration, lumbosacral region	—
M51.44	Schmorl's nodes, thoracic region	✓
M51.45	Schmorl's nodes, thoracolumbar region	✓
M51.46	Schmorl's nodes, lumbar region	✓
M51.47	Schmorl's nodes, lumbosacral region	✓
M51.84	Other intervertebral disc disorders, thoracic region	✓
M51.85	Other intervertebral disc disorders, thoracolumbar region	✓
M51.86	Other intervertebral disc disorders, lumbar region	✓
M51.87	Other intervertebral disc disorders, lumbosacral region	✓
M51.360	Other intervertebral disc degeneration, lumbar region with discogenic back pain only	✓
M51.361	Other intervertebral disc degeneration, lumbar region with lower extremity pain only	✓
M51.362	Other intervertebral disc degeneration, lumbar region with discogenic back pain and lower extremity pain	✓
M51.369	Other intervertebral disc degeneration, lumbar region without mention of lumbar back pain or lower extremity pain	✓
M51.370	Other intervertebral disc degeneration, lumbosacral region with discogenic back pain only	✓
M51.371	Other intervertebral disc degeneration, lumbosacral region with lower extremity pain only	✓
M51.372	Other intervertebral disc degeneration, lumbosacral region with discogenic back pain and lower extremity pain	✓
M51.379	Other intervertebral disc degeneration, lumbosacral region without mention of lumbar back pain or lower extremity pain	✓
M51.A	Other lumbar and lumbosacral annulus fibrosus disc defects	—
M51.A0	Intervertebral annulus fibrosus defect, lumbar region, unspecified size	✓
M51.A1	Intervertebral annulus fibrosus defect, small, lumbar region	✓
M51.A2	Intervertebral annulus fibrosus defect, large, lumbar region	✓
M51.A3	Intervertebral annulus fibrosus defect, lumbosacral region, unspecified size	✓
M51.A4	Intervertebral annulus fibrosus defect, small, lumbosacral region	✓
M51.A5	Intervertebral annulus fibrosus defect, large, lumbosacral region	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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