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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  • M41.55—

    Other secondary scoliosis, thoracolumbar region

  • M41.56—

    Other secondary scoliosis, lumbar region

  • M41.57—

    Other secondary scoliosis, lumbosacral region

  • M41.8—

    Other forms of scoliosis

  • M41.80—

    Other forms of scoliosis, site unspecified

  • M41.82—

    Other forms of scoliosis, cervical region

  • M41.83—

    Other forms of scoliosis, cervicothoracic region

  • M41.84—

    Other forms of scoliosis, thoracic region

  • M41.85—

    Other forms of scoliosis, thoracolumbar region

  • M41.86—

    Other forms of scoliosis, lumbar region

  • M41.87—

    Other forms of scoliosis, lumbosacral region

  • M41.9—

    Scoliosis, unspecified

  • M42—

    Spinal osteochondrosis

  • M42.0—

    Juvenile osteochondrosis of spine

  • M42.00—

    Juvenile osteochondrosis of spine, site unspecified

  • M42.01—

    Juvenile osteochondrosis of spine, occipito-atlanto-axial region

  • M42.02—

    Juvenile osteochondrosis of spine, cervical region

  • M42.03—

    Juvenile osteochondrosis of spine, cervicothoracic region

  • M42.04—

    Juvenile osteochondrosis of spine, thoracic region

  • M42.05—

    Juvenile osteochondrosis of spine, thoracolumbar region

  • M42.06—

    Juvenile osteochondrosis of spine, lumbar region

  • M42.07—

    Juvenile osteochondrosis of spine, lumbosacral region

  • M42.08—

    Juvenile osteochondrosis of spine, sacral and sacrococcygeal region

  • M42.09—

    Juvenile osteochondrosis of spine, multiple sites in spine

  • M42.1—

    Adult osteochondrosis of spine

  • M42.10—

    Adult osteochondrosis of spine, site unspecified

  • M42.11—

    Adult osteochondrosis of spine, occipito-atlanto-axial region

  • M42.12—

    Adult osteochondrosis of spine, cervical region

  • M42.13—

    Adult osteochondrosis of spine, cervicothoracic region

  • M42.14—

    Adult osteochondrosis of spine, thoracic region

  • M42.15—

    Adult osteochondrosis of spine, thoracolumbar region

  • M42.16—

    Adult osteochondrosis of spine, lumbar region

  • M42.17—

    Adult osteochondrosis of spine, lumbosacral region

  • M42.18—

    Adult osteochondrosis of spine, sacral and sacrococcygeal region

  • M42.19—

    Adult osteochondrosis of spine, multiple sites in spine

  • M42.9—

    Spinal osteochondrosis, unspecified

  • M43—

    Other deforming dorsopathies

  • M43.0—

    Spondylolysis

  • M43.00—

    Spondylolysis, site unspecified

  • M43.01—

    Spondylolysis, occipito-atlanto-axial region

  • M43.02—

    Spondylolysis, cervical region

  • M43.03—

    Spondylolysis, cervicothoracic region

  • M43.04—

    Spondylolysis, thoracic region

  • M43.05—

    Spondylolysis, thoracolumbar region

  • M43.06—

    Spondylolysis, lumbar region

  • M43.07—

    Spondylolysis, lumbosacral region

  • M43.08—

    Spondylolysis, sacral and sacrococcygeal region

  • M43.09—

    Spondylolysis, multiple sites in spine

  • M43.1—

    Spondylolisthesis

  • M43.10—

    Spondylolisthesis, site unspecified

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