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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  • M97.21XS—

    Periprosthetic fracture around internal prosthetic right ankle joint, sequela

  • M97.22—

    Periprosthetic fracture around internal prosthetic left ankle joint

  • M97.22XA—

    Periprosthetic fracture around internal prosthetic left ankle joint, initial encounter

  • M97.22XD—

    Periprosthetic fracture around internal prosthetic left ankle joint, subsequent encounter

  • M97.22XS—

    Periprosthetic fracture around internal prosthetic left ankle joint, sequela

  • M97.31—

    Periprosthetic fracture around internal prosthetic right shoulder joint

  • M97.31XA—

    Periprosthetic fracture around internal prosthetic right shoulder joint, initial encounter

  • M97.31XD—

    Periprosthetic fracture around internal prosthetic right shoulder joint, subsequent encounter

  • M97.31XS—

    Periprosthetic fracture around internal prosthetic right shoulder joint, sequela

  • M97.32—

    Periprosthetic fracture around internal prosthetic left shoulder joint

  • M97.32XA—

    Periprosthetic fracture around internal prosthetic left shoulder joint, initial encounter

  • M97.32XD—

    Periprosthetic fracture around internal prosthetic left shoulder joint, subsequent encounter

  • M97.32XS—

    Periprosthetic fracture around internal prosthetic left shoulder joint, sequela

  • M97.41—

    Periprosthetic fracture around internal prosthetic right elbow joint

  • M97.41XA—

    Periprosthetic fracture around internal prosthetic right elbow joint, initial encounter

  • M97.41XD—

    Periprosthetic fracture around internal prosthetic right elbow joint, subsequent encounter

  • M97.41XS—

    Periprosthetic fracture around internal prosthetic right elbow joint, sequela

  • M97.42—

    Periprosthetic fracture around internal prosthetic left elbow joint

  • M97.42XA—

    Periprosthetic fracture around internal prosthetic left elbow joint, initial encounter

  • M97.42XD—

    Periprosthetic fracture around internal prosthetic left elbow joint, subsequent encounter

  • M97.42XS—

    Periprosthetic fracture around internal prosthetic left elbow joint, sequela

  • M97.8—

    Periprosthetic fracture around other internal prosthetic joint

  • M97.8XXA—

    Periprosthetic fracture around other internal prosthetic joint, initial encounter

  • M97.8XXD—

    Periprosthetic fracture around other internal prosthetic joint, subsequent encounter

  • M97.8XXS—

    Periprosthetic fracture around other internal prosthetic joint, sequela

  • M97.9—

    Periprosthetic fracture around unspecified internal prosthetic joint

  • M97.9XXA—

    Periprosthetic fracture around unspecified internal prosthetic joint, initial encounter

  • M97.9XXD—

    Periprosthetic fracture around unspecified internal prosthetic joint, subsequent encounter

  • M97.9XXS—

    Periprosthetic fracture around unspecified internal prosthetic joint, sequela

  • M99.00—

    Segmental and somatic dysfunction of head region

  • M99.01—

    Segmental and somatic dysfunction of cervical region

  • M99.02—

    Segmental and somatic dysfunction of thoracic region

  • M99.03—

    Segmental and somatic dysfunction of lumbar region

  • M99.04—

    Segmental and somatic dysfunction of sacral region

  • M99.05—

    Segmental and somatic dysfunction of pelvic region

  • M99.06—

    Segmental and somatic dysfunction of lower extremity

  • M99.07—

    Segmental and somatic dysfunction of upper extremity

  • M99.08—

    Segmental and somatic dysfunction of rib cage

  • M99.09—

    Segmental and somatic dysfunction of abdomen and other regions

  • M99.10—

    Subluxation complex (vertebral) of head region

  • M99.11—

    Subluxation complex (vertebral) of cervical region

  • M99.12—

    Subluxation complex (vertebral) of thoracic region

  • M99.13—

    Subluxation complex (vertebral) of lumbar region

  • M99.14—

    Subluxation complex (vertebral) of sacral region

  • M99.15—

    Subluxation complex (vertebral) of pelvic region

  • M99.16—

    Subluxation complex (vertebral) of lower extremity

  • M99.17—

    Subluxation complex (vertebral) of upper extremity

  • M99.18—

    Subluxation complex (vertebral) of rib cage

  • M99.19—

    Subluxation complex (vertebral) of abdomen and other regions

  • M99.20—

    Subluxation stenosis of neural canal of head region

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