Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)

ICD-10-CM 2027 chapter 13 contains 24 code blocks with 6,687 billable codes.

Code blocks

BlockTitleBillable
M00-M25Arthropathies0
M00-M02Infectious arthropathies242
M04Autoinflammatory syndromes (M04)5
M05-M14Inflammatory polyarthropathies1,185
M15-M19Osteoarthritis98
M20-M25Other joint disorders719
M26-M27Dentofacial anomalies [including malocclusion] and other disorders of jaw94
M30-M36Systemic connective tissue disorders84
M40-M54Dorsopathies0
M40-M43Deforming dorsopathies157
M45-M49Spondylopathies264
M50-M54Other dorsopathies133
M60-M79Soft tissue disorders0
M60-M63Disorders of muscles420
M65-M67Disorders of synovium and tendon379
M70-M79Other soft tissue disorders358
M80-M94Osteopathies and chondropathies0
M80-M85Disorders of bone density and structure1,432
M86-M90Other osteopathies732
M91-M94Chondropathies212
M95Other disorders of the musculoskeletal system and connective tissue (M95)10
M96Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified (M96)36
M97Periprosthetic fracture around internal prosthetic joint (M97)36
M99Biomechanical lesions, not elsewhere classified (M99)91

Chapter notes

Excludes2 (not included here):
  • 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)
Notes:
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition