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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  • M54.14—

    Radiculopathy, thoracic region

  • M54.15—

    Radiculopathy, thoracolumbar region

  • M54.16—

    Radiculopathy, lumbar region

  • M54.17—

    Radiculopathy, lumbosacral region

  • M54.18—

    Radiculopathy, sacral and sacrococcygeal region

  • M54.2—

    Cervicalgia

  • M54.30—

    Sciatica, unspecified side

  • M54.31—

    Sciatica, right side

  • M54.32—

    Sciatica, left side

  • M54.40—

    Lumbago with sciatica, unspecified side

  • M54.41—

    Lumbago with sciatica, right side

  • M54.42—

    Lumbago with sciatica, left side

  • M54.50—

    Low back pain, unspecified

  • M54.51—

    Vertebrogenic low back pain

  • M54.59—

    Other low back pain

  • M54.6—

    Pain in thoracic spine

  • M54.81—

    Occipital neuralgia

  • M54.89—

    Other dorsalgia

  • M54.9—

    Dorsalgia, unspecified

  • M60.000—

    Infective myositis, unspecified right arm

  • M60.001—

    Infective myositis, unspecified left arm

  • M60.002—

    Infective myositis, unspecified arm

  • M60.003—

    Infective myositis, unspecified right leg

  • M60.004—

    Infective myositis, unspecified left leg

  • M60.005—

    Infective myositis, unspecified leg

  • M60.009—

    Infective myositis, unspecified site

  • M60.011—

    Infective myositis, right shoulder

  • M60.012—

    Infective myositis, left shoulder

  • M60.019—

    Infective myositis, unspecified shoulder

  • M60.021—

    Infective myositis, right upper arm

  • M60.022—

    Infective myositis, left upper arm

  • M60.029—

    Infective myositis, unspecified upper arm

  • M60.031—

    Infective myositis, right forearm

  • M60.032—

    Infective myositis, left forearm

  • M60.039—

    Infective myositis, unspecified forearm

  • M60.041—

    Infective myositis, right hand

  • M60.042—

    Infective myositis, left hand

  • M60.043—

    Infective myositis, unspecified hand

  • M60.044—

    Infective myositis, right finger(s)

  • M60.045—

    Infective myositis, left finger(s)

  • M60.046—

    Infective myositis, unspecified finger(s)

  • M60.051—

    Infective myositis, right thigh

  • M60.052—

    Infective myositis, left thigh

  • M60.059—

    Infective myositis, unspecified thigh

  • M60.061—

    Infective myositis, right lower leg

  • M60.062—

    Infective myositis, left lower leg

  • M60.069—

    Infective myositis, unspecified lower leg

  • M60.070—

    Infective myositis, right ankle

  • M60.071—

    Infective myositis, left ankle

  • M60.072—

    Infective myositis, unspecified ankle

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