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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  • M86.12—

    Other acute osteomyelitis, humerus

  • M86.121—

    Other acute osteomyelitis, right humerus

  • M86.122—

    Other acute osteomyelitis, left humerus

  • M86.129—

    Other acute osteomyelitis, unspecified humerus

  • M86.13—

    Other acute osteomyelitis, radius and ulna

  • M86.131—

    Other acute osteomyelitis, right radius and ulna

  • M86.132—

    Other acute osteomyelitis, left radius and ulna

  • M86.139—

    Other acute osteomyelitis, unspecified radius and ulna

  • M86.14—

    Other acute osteomyelitis, hand

  • M86.141—

    Other acute osteomyelitis, right hand

  • M86.142—

    Other acute osteomyelitis, left hand

  • M86.149—

    Other acute osteomyelitis, unspecified hand

  • M86.15—

    Other acute osteomyelitis, femur

  • M86.151—

    Other acute osteomyelitis, right femur

  • M86.152—

    Other acute osteomyelitis, left femur

  • M86.159—

    Other acute osteomyelitis, unspecified femur

  • M86.16—

    Other acute osteomyelitis, tibia and fibula

  • M86.161—

    Other acute osteomyelitis, right tibia and fibula

  • M86.162—

    Other acute osteomyelitis, left tibia and fibula

  • M86.169—

    Other acute osteomyelitis, unspecified tibia and fibula

  • M86.17—

    Other acute osteomyelitis, ankle and foot

  • M86.171—

    Other acute osteomyelitis, right ankle and foot

  • M86.172—

    Other acute osteomyelitis, left ankle and foot

  • M86.179—

    Other acute osteomyelitis, unspecified ankle and foot

  • M86.18—

    Other acute osteomyelitis, other site

  • M86.19—

    Other acute osteomyelitis, multiple sites

  • M86.2—

    Subacute osteomyelitis

  • M86.20—

    Subacute osteomyelitis, unspecified site

  • M86.21—

    Subacute osteomyelitis, shoulder

  • M86.211—

    Subacute osteomyelitis, right shoulder

  • M86.212—

    Subacute osteomyelitis, left shoulder

  • M86.219—

    Subacute osteomyelitis, unspecified shoulder

  • M86.22—

    Subacute osteomyelitis, humerus

  • M86.221—

    Subacute osteomyelitis, right humerus

  • M86.222—

    Subacute osteomyelitis, left humerus

  • M86.229—

    Subacute osteomyelitis, unspecified humerus

  • M86.23—

    Subacute osteomyelitis, radius and ulna

  • M86.231—

    Subacute osteomyelitis, right radius and ulna

  • M86.232—

    Subacute osteomyelitis, left radius and ulna

  • M86.239—

    Subacute osteomyelitis, unspecified radius and ulna

  • M86.24—

    Subacute osteomyelitis, hand

  • M86.241—

    Subacute osteomyelitis, right hand

  • M86.242—

    Subacute osteomyelitis, left hand

  • M86.249—

    Subacute osteomyelitis, unspecified hand

  • M86.25—

    Subacute osteomyelitis, femur

  • M86.251—

    Subacute osteomyelitis, right femur

  • M86.252—

    Subacute osteomyelitis, left femur

  • M86.259—

    Subacute osteomyelitis, unspecified femur

  • M86.26—

    Subacute osteomyelitis, tibia and fibula

  • M86.261—

    Subacute osteomyelitis, right tibia and fibula

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