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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  • M84.472—

    Pathological fracture, left ankle

  • M84.472A—

    Pathological fracture, left ankle, initial encounter for fracture

  • M84.472D—

    Pathological fracture, left ankle, subsequent encounter for fracture with routine healing

  • M84.472G—

    Pathological fracture, left ankle, subsequent encounter for fracture with delayed healing

  • M84.472K—

    Pathological fracture, left ankle, subsequent encounter for fracture with nonunion

  • M84.472P—

    Pathological fracture, left ankle, subsequent encounter for fracture with malunion

  • M84.472S—

    Pathological fracture, left ankle, sequela

  • M84.473—

    Pathological fracture, unspecified ankle

  • M84.473A—

    Pathological fracture, unspecified ankle, initial encounter for fracture

  • M84.473D—

    Pathological fracture, unspecified ankle, subsequent encounter for fracture with routine healing

  • M84.473G—

    Pathological fracture, unspecified ankle, subsequent encounter for fracture with delayed healing

  • M84.473K—

    Pathological fracture, unspecified ankle, subsequent encounter for fracture with nonunion

  • M84.473P—

    Pathological fracture, unspecified ankle, subsequent encounter for fracture with malunion

  • M84.473S—

    Pathological fracture, unspecified ankle, sequela

  • M84.474—

    Pathological fracture, right foot

  • M84.474A—

    Pathological fracture, right foot, initial encounter for fracture

  • M84.474D—

    Pathological fracture, right foot, subsequent encounter for fracture with routine healing

  • M84.474G—

    Pathological fracture, right foot, subsequent encounter for fracture with delayed healing

  • M84.474K—

    Pathological fracture, right foot, subsequent encounter for fracture with nonunion

  • M84.474P—

    Pathological fracture, right foot, subsequent encounter for fracture with malunion

  • M84.474S—

    Pathological fracture, right foot, sequela

  • M84.475—

    Pathological fracture, left foot

  • M84.475A—

    Pathological fracture, left foot, initial encounter for fracture

  • M84.475D—

    Pathological fracture, left foot, subsequent encounter for fracture with routine healing

  • M84.475G—

    Pathological fracture, left foot, subsequent encounter for fracture with delayed healing

  • M84.475K—

    Pathological fracture, left foot, subsequent encounter for fracture with nonunion

  • M84.475P—

    Pathological fracture, left foot, subsequent encounter for fracture with malunion

  • M84.475S—

    Pathological fracture, left foot, sequela

  • M84.476—

    Pathological fracture, unspecified foot

  • M84.476A—

    Pathological fracture, unspecified foot, initial encounter for fracture

  • M84.476D—

    Pathological fracture, unspecified foot, subsequent encounter for fracture with routine healing

  • M84.476G—

    Pathological fracture, unspecified foot, subsequent encounter for fracture with delayed healing

  • M84.476K—

    Pathological fracture, unspecified foot, subsequent encounter for fracture with nonunion

  • M84.476P—

    Pathological fracture, unspecified foot, subsequent encounter for fracture with malunion

  • M84.476S—

    Pathological fracture, unspecified foot, sequela

  • M84.477—

    Pathological fracture, right toe(s)

  • M84.477A—

    Pathological fracture, right toe(s), initial encounter for fracture

  • M84.477D—

    Pathological fracture, right toe(s), subsequent encounter for fracture with routine healing

  • M84.477G—

    Pathological fracture, right toe(s), subsequent encounter for fracture with delayed healing

  • M84.477K—

    Pathological fracture, right toe(s), subsequent encounter for fracture with nonunion

  • M84.477P—

    Pathological fracture, right toe(s), subsequent encounter for fracture with malunion

  • M84.477S—

    Pathological fracture, right toe(s), sequela

  • M84.478—

    Pathological fracture, left toe(s)

  • M84.478A—

    Pathological fracture, left toe(s), initial encounter for fracture

  • M84.478D—

    Pathological fracture, left toe(s), subsequent encounter for fracture with routine healing

  • M84.478G—

    Pathological fracture, left toe(s), subsequent encounter for fracture with delayed healing

  • M84.478K—

    Pathological fracture, left toe(s), subsequent encounter for fracture with nonunion

  • M84.478P—

    Pathological fracture, left toe(s), subsequent encounter for fracture with malunion

  • M84.478S—

    Pathological fracture, left toe(s), sequela

  • M84.479—

    Pathological fracture, unspecified toe(s)

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