All ICD10 Codes
Chapter 13

M00–M99: Diseases of the Musculoskeletal System and Connective Tissue

Diseases of the Musculoskeletal System and Connective Tissue diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
All CodesBillable Only
Internal Codes
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  • M50.822—

    Other cervical disc disorders at C5-C6 level

  • M50.823—

    Other cervical disc disorders at C6-C7 level

  • M50.83—

    Other cervical disc disorders, cervicothoracic region

  • M50.9—

    Cervical disc disorder, unspecified

  • M50.90—

    Cervical disc disorder, unspecified, unspecified cervical region

  • M50.91—

    Cervical disc disorder, unspecified, high cervical region

  • M50.92—

    Cervical disc disorder, unspecified, mid-cervical region

  • M50.920—

    Unspecified cervical disc disorder, mid-cervical region, unspecified level

  • M50.921—

    Unspecified cervical disc disorder at C4-C5 level

  • M50.922—

    Unspecified cervical disc disorder at C5-C6 level

  • M50.923—

    Unspecified cervical disc disorder at C6-C7 level

  • M50.93—

    Cervical disc disorder, unspecified, cervicothoracic region

  • M51—

    Thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders

  • M51.0—

    Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with myelopathy

  • M51.04—

    Intervertebral disc disorders with myelopathy, thoracic region

  • M51.05—

    Intervertebral disc disorders with myelopathy, thoracolumbar region

  • M51.06—

    Intervertebral disc disorders with myelopathy, lumbar region

  • M51.1—

    Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with radiculopathy

  • 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

  • M51.2—

    Other thoracic, thoracolumbar and lumbosacral intervertebral disc displacement

  • 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

  • M51.3—

    Other thoracic, thoracolumbar and lumbosacral intervertebral disc degeneration

  • M51.34—

    Other intervertebral disc degeneration, thoracic region

  • M51.35—

    Other intervertebral disc degeneration, thoracolumbar region

  • M51.36—

    Other intervertebral disc degeneration, lumbar region

  • M51.360—

    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

  • M51.37—

    Other intervertebral disc degeneration, lumbosacral region

  • 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

  • M51.4—

    Schmorl's nodes

  • 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

  • M51.8—

    Other thoracic, thoracolumbar and lumbosacral intervertebral disc disorders

  • 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

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