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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  • M84.322P—

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

  • M84.322S—

    Stress fracture, left humerus, sequela

  • M84.329—

    Stress fracture, unspecified humerus

  • M84.329A—

    Stress fracture, unspecified humerus, initial encounter for fracture

  • M84.329D—

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

  • M84.329G—

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

  • M84.329K—

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

  • M84.329P—

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

  • M84.329S—

    Stress fracture, unspecified humerus, sequela

  • M84.331—

    Stress fracture, right ulna

  • M84.331A—

    Stress fracture, right ulna, initial encounter for fracture

  • M84.331D—

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

  • M84.331G—

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

  • M84.331K—

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

  • M84.331P—

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

  • M84.331S—

    Stress fracture, right ulna, sequela

  • M84.332—

    Stress fracture, left ulna

  • M84.332A—

    Stress fracture, left ulna, initial encounter for fracture

  • M84.332D—

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

  • M84.332G—

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

  • M84.332K—

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

  • M84.332P—

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

  • M84.332S—

    Stress fracture, left ulna, sequela

  • M84.333—

    Stress fracture, right radius

  • M84.333A—

    Stress fracture, right radius, initial encounter for fracture

  • M84.333D—

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

  • M84.333G—

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

  • M84.333K—

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

  • M84.333P—

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

  • M84.333S—

    Stress fracture, right radius, sequela

  • M84.334—

    Stress fracture, left radius

  • M84.334A—

    Stress fracture, left radius, initial encounter for fracture

  • M84.334D—

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

  • M84.334G—

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

  • M84.334K—

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

  • M84.334P—

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

  • M84.334S—

    Stress fracture, left radius, sequela

  • M84.339—

    Stress fracture, unspecified ulna and radius

  • M84.339A—

    Stress fracture, unspecified ulna and radius, initial encounter for fracture

  • M84.339D—

    Stress fracture, unspecified ulna and radius, subsequent encounter for fracture with routine healing

  • M84.339G—

    Stress fracture, unspecified ulna and radius, subsequent encounter for fracture with delayed healing

  • M84.339K—

    Stress fracture, unspecified ulna and radius, subsequent encounter for fracture with nonunion

  • M84.339P—

    Stress fracture, unspecified ulna and radius, subsequent encounter for fracture with malunion

  • M84.339S—

    Stress fracture, unspecified ulna and radius, sequela

  • M84.341—

    Stress fracture, right hand

  • M84.341A—

    Stress fracture, right hand, initial encounter for fracture

  • M84.341D—

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

  • M84.341G—

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

  • M84.341K—

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

  • M84.341P—

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

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