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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  • M84.662A—

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

  • M84.662D—

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

  • M84.662G—

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

  • M84.662K—

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

  • M84.662P—

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

  • M84.662S—

    Pathological fracture in other disease, left tibia, sequela

  • M84.663—

    Pathological fracture in other disease, right fibula

  • M84.663A—

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

  • M84.663D—

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

  • M84.663G—

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

  • M84.663K—

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

  • M84.663P—

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

  • M84.663S—

    Pathological fracture in other disease, right fibula, sequela

  • M84.664—

    Pathological fracture in other disease, left fibula

  • M84.664A—

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

  • M84.664D—

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

  • M84.664G—

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

  • M84.664K—

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

  • M84.664P—

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

  • M84.664S—

    Pathological fracture in other disease, left fibula, sequela

  • M84.669—

    Pathological fracture in other disease, unspecified tibia and fibula

  • M84.669A—

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

  • M84.669D—

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

  • M84.669G—

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

  • M84.669K—

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

  • M84.669P—

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

  • M84.669S—

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

  • M84.67—

    Pathological fracture in other disease, ankle and foot

  • M84.671—

    Pathological fracture in other disease, right ankle

  • M84.671A—

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

  • M84.671D—

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

  • M84.671G—

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

  • M84.671K—

    Pathological fracture in other disease, right ankle, subsequent encounter for fracture with nonunion

  • M84.671P—

    Pathological fracture in other disease, right ankle, subsequent encounter for fracture with malunion

  • M84.671S—

    Pathological fracture in other disease, right ankle, sequela

  • M84.672—

    Pathological fracture in other disease, left ankle

  • M84.672A—

    Pathological fracture in other disease, left ankle, initial encounter for fracture

  • M84.672D—

    Pathological fracture in other disease, left ankle, subsequent encounter for fracture with routine healing

  • M84.672G—

    Pathological fracture in other disease, left ankle, subsequent encounter for fracture with delayed healing

  • M84.672K—

    Pathological fracture in other disease, left ankle, subsequent encounter for fracture with nonunion

  • M84.672P—

    Pathological fracture in other disease, left ankle, subsequent encounter for fracture with malunion

  • M84.672S—

    Pathological fracture in other disease, left ankle, sequela

  • M84.673—

    Pathological fracture in other disease, unspecified ankle

  • M84.673A—

    Pathological fracture in other disease, unspecified ankle, initial encounter for fracture

  • M84.673D—

    Pathological fracture in other disease, unspecified ankle, subsequent encounter for fracture with routine healing

  • M84.673G—

    Pathological fracture in other disease, unspecified ankle, subsequent encounter for fracture with delayed healing

  • M84.673K—

    Pathological fracture in other disease, unspecified ankle, subsequent encounter for fracture with nonunion

  • M84.673P—

    Pathological fracture in other disease, unspecified ankle, subsequent encounter for fracture with malunion

  • M84.673S—

    Pathological fracture in other disease, unspecified ankle, sequela

  • M84.674—

    Pathological fracture in other disease, right foot

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