Chapter 13

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

Note:
Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Excludes 2:
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)

This chapter contains the following blocks:

M00-M25 Arthropathies (M00-M25)
M00-M02 Infectious arthropathies (M00-M02)
M04 Autoinflammatory syndromes (M04)
M05-M14 Inflammatory polyarthropathies (M05-M14)
M15-M19 Osteoarthritis (M15-M19)
M20-M25 Other joint disorders (M20-M25)
M26-M27 Dentofacial anomalies [including malocclusion] and other disorders of jaw (M26-M27)
M30-M36 Systemic connective tissue disorders (M30-M36)
M40-M54 Dorsopathies (M40-M54)
M40-M43 Deforming dorsopathies (M40-M43)
M45-M49 Spondylopathies (M45-M49)
M50-M54 Other dorsopathies (M50-M54)
M60-M79 Soft tissue disorders (M60-M79)
M60-M63 Disorders of muscles (M60-M63)
M65-M67 Disorders of synovium and tendon (M65-M67)
M70-M79 Other soft tissue disorders (M70-M79)
M80-M94 Osteopathies and chondropathies (M80-M94)
M80-M85 Disorders of bone density and structure (M80-M85)
M86-M90 Other osteopathies (M86-M90)
M91-M94 Chondropathies (M91-M94)
M95 Other disorders of the musculoskeletal system and connective tissue (M95)
M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified (M96)
M97 Periprosthetic fracture around internal prosthetic joint (M97)
M99 Biomechanical lesions, not elsewhere classified (M99)

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