ICD-10-CM · Chapter 13 · M00-M99
Diseases of the musculoskeletal system and connective tissue
5,113 billable diagnosis codes across 20 code blocks. FY2027 release.
Excludes 2 (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)
M00-M02 Infectious arthropathies
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
- M30 Polyarteritis nodosa and related conditions
- M31 Other necrotizing vasculopathies
- M32 Systemic lupus erythematosus (SLE)
- M33 Dermatopolymyositis
- M34 Systemic sclerosis [scleroderma]
- M35 Other systemic involvement of connective tissue
- M36 Systemic disorders of connective tissue in diseases classified elsewhere
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 Other disorders of the musculoskeletal system and connective tissue
M96 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
M97 Periprosthetic fracture around internal prosthetic joint
M99 Biomechanical lesions, not elsewhere classified
Last reviewed: September 2026