Notes
Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Type 2 excludes
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)
Codes
M00-M02
Infectious arthropathies
M04-M04
Autoinflammatory syndromes
M05-M14
Inflammatory polyarthropathies
M15-M19
Osteoarthritis
M20-M25
Other joint disorders
M26-M27
Dentofacial anomalies [including malocclusion] and other disorders of jaw
M30-M36
Systemic connective tissue disorders
M40-M43
Deforming dorsopathies
M45-M49
Spondylopathies
M50-M54
Other dorsopathies
M60-M63
Disorders of muscles
M65-M67
Disorders of synovium and tendon
M70-M79
Other soft tissue disorders
M80-M85
Disorders of bone density and structure
M86-M90
Other osteopathies
M91-M94
Chondropathies
M95-M95
Other disorders of the musculoskeletal system and connective tissue
M96-M96
Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
M97-M97
Periprosthetic fracture around internal prosthetic joint
M99-M99
Biomechanical lesions, not elsewhere classified
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code