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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  • M84.479A—

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

  • M84.479D—

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

  • M84.479G—

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

  • M84.479K—

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

  • M84.479P—

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

  • M84.479S—

    Pathological fracture, unspecified toe(s), sequela

  • M84.48—

    Pathological fracture, other site

  • M84.48XA—

    Pathological fracture, other site, initial encounter for fracture

  • M84.48XD—

    Pathological fracture, other site, subsequent encounter for fracture with routine healing

  • M84.48XG—

    Pathological fracture, other site, subsequent encounter for fracture with delayed healing

  • M84.48XK—

    Pathological fracture, other site, subsequent encounter for fracture with nonunion

  • M84.48XP—

    Pathological fracture, other site, subsequent encounter for fracture with malunion

  • M84.48XS—

    Pathological fracture, other site, sequela

  • M84.5—

    Pathological fracture in neoplastic disease

  • M84.50—

    Pathological fracture in neoplastic disease, unspecified site

  • M84.50XA—

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

  • M84.50XD—

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

  • M84.50XG—

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

  • M84.50XK—

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

  • M84.50XP—

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

  • M84.50XS—

    Pathological fracture in neoplastic disease, unspecified site, sequela

  • M84.51—

    Pathological fracture in neoplastic disease, shoulder

  • M84.511—

    Pathological fracture in neoplastic disease, right shoulder

  • M84.511A—

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

  • M84.511D—

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

  • M84.511G—

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

  • M84.511K—

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

  • M84.511P—

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

  • M84.511S—

    Pathological fracture in neoplastic disease, right shoulder, sequela

  • M84.512—

    Pathological fracture in neoplastic disease, left shoulder

  • M84.512A—

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

  • M84.512D—

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

  • M84.512G—

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

  • M84.512K—

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

  • M84.512P—

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

  • M84.512S—

    Pathological fracture in neoplastic disease, left shoulder, sequela

  • M84.519—

    Pathological fracture in neoplastic disease, unspecified shoulder

  • M84.519A—

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

  • M84.519D—

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

  • M84.519G—

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

  • M84.519K—

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

  • M84.519P—

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

  • M84.519S—

    Pathological fracture in neoplastic disease, unspecified shoulder, sequela

  • M84.52—

    Pathological fracture in neoplastic disease, humerus

  • M84.521—

    Pathological fracture in neoplastic disease, right humerus

  • M84.521A—

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

  • M84.521D—

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

  • M84.521G—

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

  • M84.521K—

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

  • M84.521P—

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

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