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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  • M23.612—

    Other spontaneous disruption of anterior cruciate ligament of left knee

  • M23.619—

    Other spontaneous disruption of anterior cruciate ligament of unspecified knee

  • M23.62—

    Other spontaneous disruption of posterior cruciate ligament of knee

  • M23.621—

    Other spontaneous disruption of posterior cruciate ligament of right knee

  • M23.622—

    Other spontaneous disruption of posterior cruciate ligament of left knee

  • M23.629—

    Other spontaneous disruption of posterior cruciate ligament of unspecified knee

  • M23.63—

    Other spontaneous disruption of medial collateral ligament of knee

  • M23.631—

    Other spontaneous disruption of medial collateral ligament of right knee

  • M23.632—

    Other spontaneous disruption of medial collateral ligament of left knee

  • M23.639—

    Other spontaneous disruption of medial collateral ligament of unspecified knee

  • M23.64—

    Other spontaneous disruption of lateral collateral ligament of knee

  • M23.641—

    Other spontaneous disruption of lateral collateral ligament of right knee

  • M23.642—

    Other spontaneous disruption of lateral collateral ligament of left knee

  • M23.649—

    Other spontaneous disruption of lateral collateral ligament of unspecified knee

  • M23.67—

    Other spontaneous disruption of capsular ligament of knee

  • M23.671—

    Other spontaneous disruption of capsular ligament of right knee

  • M23.672—

    Other spontaneous disruption of capsular ligament of left knee

  • M23.679—

    Other spontaneous disruption of capsular ligament of unspecified knee

  • M23.8—

    Other internal derangements of knee

  • M23.8X—

    Other internal derangements of knee

  • M23.8X1—

    Other internal derangements of right knee

  • M23.8X2—

    Other internal derangements of left knee

  • M23.8X9—

    Other internal derangements of unspecified knee

  • M23.9—

    Unspecified internal derangement of knee

  • M23.90—

    Unspecified internal derangement of unspecified knee

  • M23.91—

    Unspecified internal derangement of right knee

  • M23.92—

    Unspecified internal derangement of left knee

  • M24—

    Other specific joint derangements

  • M24.0—

    Loose body in joint

  • M24.00—

    Loose body in unspecified joint

  • M24.01—

    Loose body in shoulder

  • M24.011—

    Loose body in right shoulder

  • M24.012—

    Loose body in left shoulder

  • M24.019—

    Loose body in unspecified shoulder

  • M24.02—

    Loose body in elbow

  • M24.021—

    Loose body in right elbow

  • M24.022—

    Loose body in left elbow

  • M24.029—

    Loose body in unspecified elbow

  • M24.03—

    Loose body in wrist

  • M24.031—

    Loose body in right wrist

  • M24.032—

    Loose body in left wrist

  • M24.039—

    Loose body in unspecified wrist

  • M24.04—

    Loose body in finger joints

  • M24.041—

    Loose body in right finger joint(s)

  • M24.042—

    Loose body in left finger joint(s)

  • M24.049—

    Loose body in unspecified finger joint(s)

  • M24.05—

    Loose body in hip

  • M24.051—

    Loose body in right hip

  • M24.052—

    Loose body in left hip

  • M24.059—

    Loose body in unspecified hip

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