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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  • M84.553P—

    Pathological fracture in neoplastic disease, unspecified femur, subsequent encounter for fracture with malunion

  • M84.553S—

    Pathological fracture in neoplastic disease, unspecified femur, sequela

  • M84.559—

    Pathological fracture in neoplastic disease, hip, unspecified

  • M84.559A—

    Pathological fracture in neoplastic disease, hip, unspecified, initial encounter for fracture

  • M84.559D—

    Pathological fracture in neoplastic disease, hip, unspecified, subsequent encounter for fracture with routine healing

  • M84.559G—

    Pathological fracture in neoplastic disease, hip, unspecified, subsequent encounter for fracture with delayed healing

  • M84.559K—

    Pathological fracture in neoplastic disease, hip, unspecified, subsequent encounter for fracture with nonunion

  • M84.559P—

    Pathological fracture in neoplastic disease, hip, unspecified, subsequent encounter for fracture with malunion

  • M84.559S—

    Pathological fracture in neoplastic disease, hip, unspecified, sequela

  • M84.56—

    Pathological fracture in neoplastic disease, tibia and fibula

  • M84.561—

    Pathological fracture in neoplastic disease, right tibia

  • M84.561A—

    Pathological fracture in neoplastic disease, right tibia, initial encounter for fracture

  • M84.561D—

    Pathological fracture in neoplastic disease, right tibia, subsequent encounter for fracture with routine healing

  • M84.561G—

    Pathological fracture in neoplastic disease, right tibia, subsequent encounter for fracture with delayed healing

  • M84.561K—

    Pathological fracture in neoplastic disease, right tibia, subsequent encounter for fracture with nonunion

  • M84.561P—

    Pathological fracture in neoplastic disease, right tibia, subsequent encounter for fracture with malunion

  • M84.561S—

    Pathological fracture in neoplastic disease, right tibia, sequela

  • M84.562—

    Pathological fracture in neoplastic disease, left tibia

  • M84.562A—

    Pathological fracture in neoplastic disease, left tibia, initial encounter for fracture

  • M84.562D—

    Pathological fracture in neoplastic disease, left tibia, subsequent encounter for fracture with routine healing

  • M84.562G—

    Pathological fracture in neoplastic disease, left tibia, subsequent encounter for fracture with delayed healing

  • M84.562K—

    Pathological fracture in neoplastic disease, left tibia, subsequent encounter for fracture with nonunion

  • M84.562P—

    Pathological fracture in neoplastic disease, left tibia, subsequent encounter for fracture with malunion

  • M84.562S—

    Pathological fracture in neoplastic disease, left tibia, sequela

  • M84.563—

    Pathological fracture in neoplastic disease, right fibula

  • M84.563A—

    Pathological fracture in neoplastic disease, right fibula, initial encounter for fracture

  • M84.563D—

    Pathological fracture in neoplastic disease, right fibula, subsequent encounter for fracture with routine healing

  • M84.563G—

    Pathological fracture in neoplastic disease, right fibula, subsequent encounter for fracture with delayed healing

  • M84.563K—

    Pathological fracture in neoplastic disease, right fibula, subsequent encounter for fracture with nonunion

  • M84.563P—

    Pathological fracture in neoplastic disease, right fibula, subsequent encounter for fracture with malunion

  • M84.563S—

    Pathological fracture in neoplastic disease, right fibula, sequela

  • M84.564—

    Pathological fracture in neoplastic disease, left fibula

  • M84.564A—

    Pathological fracture in neoplastic disease, left fibula, initial encounter for fracture

  • M84.564D—

    Pathological fracture in neoplastic disease, left fibula, subsequent encounter for fracture with routine healing

  • M84.564G—

    Pathological fracture in neoplastic disease, left fibula, subsequent encounter for fracture with delayed healing

  • M84.564K—

    Pathological fracture in neoplastic disease, left fibula, subsequent encounter for fracture with nonunion

  • M84.564P—

    Pathological fracture in neoplastic disease, left fibula, subsequent encounter for fracture with malunion

  • M84.564S—

    Pathological fracture in neoplastic disease, left fibula, sequela

  • M84.569—

    Pathological fracture in neoplastic disease, unspecified tibia and fibula

  • M84.569A—

    Pathological fracture in neoplastic disease, unspecified tibia and fibula, initial encounter for fracture

  • M84.569D—

    Pathological fracture in neoplastic disease, unspecified tibia and fibula, subsequent encounter for fracture with routine healing

  • M84.569G—

    Pathological fracture in neoplastic disease, unspecified tibia and fibula, subsequent encounter for fracture with delayed healing

  • M84.569K—

    Pathological fracture in neoplastic disease, unspecified tibia and fibula, subsequent encounter for fracture with nonunion

  • M84.569P—

    Pathological fracture in neoplastic disease, unspecified tibia and fibula, subsequent encounter for fracture with malunion

  • M84.569S—

    Pathological fracture in neoplastic disease, unspecified tibia and fibula, sequela

  • M84.57—

    Pathological fracture in neoplastic disease, ankle and foot

  • M84.571—

    Pathological fracture in neoplastic disease, right ankle

  • M84.571A—

    Pathological fracture in neoplastic disease, right ankle, initial encounter for fracture

  • M84.571D—

    Pathological fracture in neoplastic disease, right ankle, subsequent encounter for fracture with routine healing

  • M84.571G—

    Pathological fracture in neoplastic disease, right ankle, subsequent encounter for fracture with delayed healing

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