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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  • M84.369A—

    Stress fracture, unspecified tibia and fibula, initial encounter for fracture

  • M84.369D—

    Stress fracture, unspecified tibia and fibula, subsequent encounter for fracture with routine healing

  • M84.369G—

    Stress fracture, unspecified tibia and fibula, subsequent encounter for fracture with delayed healing

  • M84.369K—

    Stress fracture, unspecified tibia and fibula, subsequent encounter for fracture with nonunion

  • M84.369P—

    Stress fracture, unspecified tibia and fibula, subsequent encounter for fracture with malunion

  • M84.369S—

    Stress fracture, unspecified tibia and fibula, sequela

  • M84.371—

    Stress fracture, right ankle

  • M84.371A—

    Stress fracture, right ankle, initial encounter for fracture

  • M84.371D—

    Stress fracture, right ankle, subsequent encounter for fracture with routine healing

  • M84.371G—

    Stress fracture, right ankle, subsequent encounter for fracture with delayed healing

  • M84.371K—

    Stress fracture, right ankle, subsequent encounter for fracture with nonunion

  • M84.371P—

    Stress fracture, right ankle, subsequent encounter for fracture with malunion

  • M84.371S—

    Stress fracture, right ankle, sequela

  • M84.372—

    Stress fracture, left ankle

  • M84.372A—

    Stress fracture, left ankle, initial encounter for fracture

  • M84.372D—

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

  • M84.372G—

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

  • M84.372K—

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

  • M84.372P—

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

  • M84.372S—

    Stress fracture, left ankle, sequela

  • M84.373—

    Stress fracture, unspecified ankle

  • M84.373A—

    Stress fracture, unspecified ankle, initial encounter for fracture

  • M84.373D—

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

  • M84.373G—

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

  • M84.373K—

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

  • M84.373P—

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

  • M84.373S—

    Stress fracture, unspecified ankle, sequela

  • M84.374—

    Stress fracture, right foot

  • M84.374A—

    Stress fracture, right foot, initial encounter for fracture

  • M84.374D—

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

  • M84.374G—

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

  • M84.374K—

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

  • M84.374P—

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

  • M84.374S—

    Stress fracture, right foot, sequela

  • M84.375—

    Stress fracture, left foot

  • M84.375A—

    Stress fracture, left foot, initial encounter for fracture

  • M84.375D—

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

  • M84.375G—

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

  • M84.375K—

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

  • M84.375P—

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

  • M84.375S—

    Stress fracture, left foot, sequela

  • M84.376—

    Stress fracture, unspecified foot

  • M84.376A—

    Stress fracture, unspecified foot, initial encounter for fracture

  • M84.376D—

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

  • M84.376G—

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

  • M84.376K—

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

  • M84.376P—

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

  • M84.376S—

    Stress fracture, unspecified foot, sequela

  • M84.377—

    Stress fracture, right toe(s)

  • M84.377A—

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

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