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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  • M67.939—

    Unspecified disorder of synovium and tendon, unspecified forearm

  • M67.941—

    Unspecified disorder of synovium and tendon, right hand

  • M67.942—

    Unspecified disorder of synovium and tendon, left hand

  • M67.949—

    Unspecified disorder of synovium and tendon, unspecified hand

  • M67.951—

    Unspecified disorder of synovium and tendon, right thigh

  • M67.952—

    Unspecified disorder of synovium and tendon, left thigh

  • M67.959—

    Unspecified disorder of synovium and tendon, unspecified thigh

  • M67.961—

    Unspecified disorder of synovium and tendon, right lower leg

  • M67.962—

    Unspecified disorder of synovium and tendon, left lower leg

  • M67.969—

    Unspecified disorder of synovium and tendon, unspecified lower leg

  • M67.971—

    Unspecified disorder of synovium and tendon, right ankle and foot

  • M67.972—

    Unspecified disorder of synovium and tendon, left ankle and foot

  • M67.979—

    Unspecified disorder of synovium and tendon, unspecified ankle and foot

  • M67.98—

    Unspecified disorder of synovium and tendon, other site

  • M67.99—

    Unspecified disorder of synovium and tendon, multiple sites

  • M70.031—

    Crepitant synovitis (acute) (chronic), right wrist

  • M70.032—

    Crepitant synovitis (acute) (chronic), left wrist

  • M70.039—

    Crepitant synovitis (acute) (chronic), unspecified wrist

  • M70.041—

    Crepitant synovitis (acute) (chronic), right hand

  • M70.042—

    Crepitant synovitis (acute) (chronic), left hand

  • M70.049—

    Crepitant synovitis (acute) (chronic), unspecified hand

  • M70.10—

    Bursitis, unspecified hand

  • M70.11—

    Bursitis, right hand

  • M70.12—

    Bursitis, left hand

  • M70.20—

    Olecranon bursitis, unspecified elbow

  • M70.21—

    Olecranon bursitis, right elbow

  • M70.22—

    Olecranon bursitis, left elbow

  • M70.30—

    Other bursitis of elbow, unspecified elbow

  • M70.31—

    Other bursitis of elbow, right elbow

  • M70.32—

    Other bursitis of elbow, left elbow

  • M70.40—

    Prepatellar bursitis, unspecified knee

  • M70.41—

    Prepatellar bursitis, right knee

  • M70.42—

    Prepatellar bursitis, left knee

  • M70.50—

    Other bursitis of knee, unspecified knee

  • M70.51—

    Other bursitis of knee, right knee

  • M70.52—

    Other bursitis of knee, left knee

  • M70.60—

    Trochanteric bursitis, unspecified hip

  • M70.61—

    Trochanteric bursitis, right hip

  • M70.62—

    Trochanteric bursitis, left hip

  • M70.70—

    Other bursitis of hip, unspecified hip

  • M70.71—

    Other bursitis of hip, right hip

  • M70.72—

    Other bursitis of hip, left hip

  • M70.80—

    Other soft tissue disorders related to use, overuse and pressure of unspecified site

  • M70.811—

    Other soft tissue disorders related to use, overuse and pressure, right shoulder

  • M70.812—

    Other soft tissue disorders related to use, overuse and pressure, left shoulder

  • M70.819—

    Other soft tissue disorders related to use, overuse and pressure, unspecified shoulder

  • M70.821—

    Other soft tissue disorders related to use, overuse and pressure, right upper arm

  • M70.822—

    Other soft tissue disorders related to use, overuse and pressure, left upper arm

  • M70.829—

    Other soft tissue disorders related to use, overuse and pressure, unspecified upper arms

  • M70.831—

    Other soft tissue disorders related to use, overuse and pressure, right forearm

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