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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  • M25.422—

    Effusion, left elbow

  • M25.429—

    Effusion, unspecified elbow

  • M25.431—

    Effusion, right wrist

  • M25.432—

    Effusion, left wrist

  • M25.439—

    Effusion, unspecified wrist

  • M25.441—

    Effusion, right hand

  • M25.442—

    Effusion, left hand

  • M25.449—

    Effusion, unspecified hand

  • M25.451—

    Effusion, right hip

  • M25.452—

    Effusion, left hip

  • M25.459—

    Effusion, unspecified hip

  • M25.461—

    Effusion, right knee

  • M25.462—

    Effusion, left knee

  • M25.469—

    Effusion, unspecified knee

  • M25.471—

    Effusion, right ankle

  • M25.472—

    Effusion, left ankle

  • M25.473—

    Effusion, unspecified ankle

  • M25.474—

    Effusion, right foot

  • M25.475—

    Effusion, left foot

  • M25.476—

    Effusion, unspecified foot

  • M25.48—

    Effusion, other site

  • M25.50—

    Pain in unspecified joint

  • M25.511—

    Pain in right shoulder

  • M25.512—

    Pain in left shoulder

  • M25.519—

    Pain in unspecified shoulder

  • M25.521—

    Pain in right elbow

  • M25.522—

    Pain in left elbow

  • M25.529—

    Pain in unspecified elbow

  • M25.531—

    Pain in right wrist

  • M25.532—

    Pain in left wrist

  • M25.539—

    Pain in unspecified wrist

  • M25.541—

    Pain in joints of right hand

  • M25.542—

    Pain in joints of left hand

  • M25.549—

    Pain in joints of unspecified hand

  • M25.551—

    Pain in right hip

  • M25.552—

    Pain in left hip

  • M25.559—

    Pain in unspecified hip

  • M25.561—

    Pain in right knee

  • M25.562—

    Pain in left knee

  • M25.569—

    Pain in unspecified knee

  • M25.571—

    Pain in right ankle and joints of right foot

  • M25.572—

    Pain in left ankle and joints of left foot

  • M25.579—

    Pain in unspecified ankle and joints of unspecified foot

  • M25.59—

    Pain in other specified joint

  • M25.60—

    Stiffness of unspecified joint, not elsewhere classified

  • M25.611—

    Stiffness of right shoulder, not elsewhere classified

  • M25.612—

    Stiffness of left shoulder, not elsewhere classified

  • M25.619—

    Stiffness of unspecified shoulder, not elsewhere classified

  • M25.621—

    Stiffness of right elbow, not elsewhere classified

  • M25.622—

    Stiffness of left elbow, not elsewhere classified

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