Circular 06/2026
Chapter XIII — Diseases of the musculoskeletal system and connective tissue
22 chapters · 15,844 codes · Quick search →
M00-M25 — Arthropathies
M00Pyogenic arthritisM01*Direct infections of joint in infectious and parasitic diseases classified elsewhereM02Reactive arthropathiesM03*Postinfective and reactive arthropathies in diseases classified elsewhereM05Seropositive rheumatoid arthritisM06Other rheumatoid arthritisM07*Psoriatic and enteropathic arthropathiesM08Juvenile arthritisM09*Juvenile arthritis in diseases classified elsewhereM10GoutM11Other crystal arthropathiesM12Other specific arthropathiesM13Other arthritisM14*Arthropathies in other diseases classified elsewhereM15PolyarthrosisM16Coxarthrosis [arthrosis of hip]M17Gonarthrosis [arthrosis of knee]M18Arthrosis of first carpometacarpal jointM19Other arthrosisM20Acquired deformities of fingers and toesM21Other acquired deformities of limbsM22Disorders of patellaM23Internal derangement of kneeM24Other specific joint derangementsM25Other joint disorders, not elsewhere classified
M30-M36 — Systemic connective tissue disorders
M40-M54 — Dorsopathies
M40Kyphosis and lordosisM41ScoliosisM42Spinal osteochondrosisM43Other deforming dorsopathiesM45Ankylosing spondylitisM46Other inflammatory spondylopathiesM47SpondylosisM48Other spondylopathiesM49*Spondylopathies in diseases classified elsewhereM50Cervical disc disordersM51Other intervertebral disc disordersM53Other dorsopathies, not elsewhere classifiedM54Dorsalgia
M60-M79 — Soft tissue disorders
M60MyositisM61Calcification and ossification of muscleM62Other disorders of muscleM63*Disorders of muscle in diseases classified elsewhereM65Synovitis and tenosynovitisM66Spontaneous rupture of synovium and tendonM67Other disorders of synovium and tendonM68*Disorders of synovium and tendon in diseases classified elsewhereM70Soft tissue disorders related to use, overuse and pressureM71Other bursopathiesM72Fibroblastic disordersM73*Soft tissue disorders in diseases classified elsewhereM75Shoulder lesionsM76Enthesopathies of lower limb, excluding footM77Other enthesopathiesM79Other soft tissue disorders, not elsewhere classified
M80-M94 — Osteopathies and chondropathies
M80Osteoporosis with pathological fractureM81Osteoporosis without pathological fractureM82*Osteoporosis in diseases classified elsewhereM83Adult osteomalaciaM84Disorders of continuity of boneM85Other disorders of bone density and structureM86OsteomyelitisM87OsteonecrosisM88Paget disease of bone [osteitis deformans]M89Other disorders of boneM90*Osteopathies in diseases classified elsewhereM91Juvenile osteochondrosis of hip and pelvisM92Other juvenile osteochondrosisM93Other osteochondropathiesM94Other disorders of cartilage