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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  • M60.044—

    Infective myositis, right finger(s)

  • M60.045—

    Infective myositis, left finger(s)

  • M60.046—

    Infective myositis, unspecified finger(s)

  • M60.05—

    Infective myositis, thigh

  • M60.051—

    Infective myositis, right thigh

  • M60.052—

    Infective myositis, left thigh

  • M60.059—

    Infective myositis, unspecified thigh

  • M60.06—

    Infective myositis, lower leg

  • M60.061—

    Infective myositis, right lower leg

  • M60.062—

    Infective myositis, left lower leg

  • M60.069—

    Infective myositis, unspecified lower leg

  • M60.07—

    Infective myositis, ankle, foot and toes

  • M60.070—

    Infective myositis, right ankle

  • M60.071—

    Infective myositis, left ankle

  • M60.072—

    Infective myositis, unspecified ankle

  • M60.073—

    Infective myositis, right foot

  • M60.074—

    Infective myositis, left foot

  • M60.075—

    Infective myositis, unspecified foot

  • M60.076—

    Infective myositis, right toe(s)

  • M60.077—

    Infective myositis, left toe(s)

  • M60.078—

    Infective myositis, unspecified toe(s)

  • M60.08—

    Infective myositis, other site

  • M60.09—

    Infective myositis, multiple sites

  • M60.1—

    Interstitial myositis

  • M60.10—

    Interstitial myositis of unspecified site

  • M60.11—

    Interstitial myositis, shoulder

  • M60.111—

    Interstitial myositis, right shoulder

  • M60.112—

    Interstitial myositis, left shoulder

  • M60.119—

    Interstitial myositis, unspecified shoulder

  • M60.12—

    Interstitial myositis, upper arm

  • M60.121—

    Interstitial myositis, right upper arm

  • M60.122—

    Interstitial myositis, left upper arm

  • M60.129—

    Interstitial myositis, unspecified upper arm

  • M60.13—

    Interstitial myositis, forearm

  • M60.131—

    Interstitial myositis, right forearm

  • M60.132—

    Interstitial myositis, left forearm

  • M60.139—

    Interstitial myositis, unspecified forearm

  • M60.14—

    Interstitial myositis, hand

  • M60.141—

    Interstitial myositis, right hand

  • M60.142—

    Interstitial myositis, left hand

  • M60.149—

    Interstitial myositis, unspecified hand

  • M60.15—

    Interstitial myositis, thigh

  • M60.151—

    Interstitial myositis, right thigh

  • M60.152—

    Interstitial myositis, left thigh

  • M60.159—

    Interstitial myositis, unspecified thigh

  • M60.16—

    Interstitial myositis, lower leg

  • M60.161—

    Interstitial myositis, right lower leg

  • M60.162—

    Interstitial myositis, left lower leg

  • M60.169—

    Interstitial myositis, unspecified lower leg

  • M60.17—

    Interstitial myositis, ankle and foot

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