M00-M99

Diseases of the musculoskeletal system and connective tissue

Chapter 13

Covers diseases of the musculoskeletal system and connective tissue including arthropathies, dorsopathies, and osteoporosis.

Additional Information

From parent codes: M00-M99 (Chapter 13)

Excludes 2 — Not Included HereFrom M00-M99

Excludes2 means 'NOT INCLUDED HERE!' An Excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time.

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)

NotesFrom M00-M99

Additional notes from parent codes that apply to this code.

Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Codes in this Chapter (78)

M00Pyogenic arthritis5 codes→M01Direct infections of joint in infectious and parasitic diseases classified elsewhere1 codes→M02Postinfective and reactive arthropathies6 codes→M04Autoinflammatory syndromes4 codes→M05Rheumatoid arthritis with rheumatoid factor10 codes→M06Other rheumatoid arthritis7 codes→M07Enteropathic arthropathies1 codes→M08Juvenile arthritis7 codes→M10Gout6 codes→M11Other crystal arthropathies5 codes→M12Other and unspecified arthropathy8 codes→M13Other arthritis3 codes→M14Arthropathies in other diseases classified elsewhere2 codes→M15Polyosteoarthritis7 codes→M16Osteoarthritis of hip9 codes→M17Osteoarthritis of knee7 codes→M18Osteoarthritis of first carpometacarpal joint7 codes→M19Other and unspecified osteoarthritis4 codes→M20Acquired deformities of fingers and toes7 codes→M21Other acquired deformities of limbs10 codes→M22Disorder of patella7 codes→M23Internal derangement of knee8 codes→M24Other specific joint derangements10 codes→M25Other joint disorder, not elsewhere classified10 codes→M26Dentofacial anomalies [including malocclusion]10 codes→M27Other diseases of jaws9 codes→M30Polyarteritis nodosa and related conditions5 codes→M31Other necrotizing vasculopathies10 codes→M32Systemic lupus erythematosus (SLE)4 codes→M33Dermatopolymyositis4 codes→M34Systemic sclerosis [scleroderma]5 codes→M35Other systemic involvement of connective tissue10 codes→M36Systemic disorders of connective tissue in diseases classified elsewhere6 codes→M40Kyphosis and lordosis6 codes→M41Scoliosis8 codes→M42Spinal osteochondrosis3 codes→M43Other deforming dorsopathies9 codes→M45Ankylosing spondylitis11 codes→M46Other inflammatory spondylopathies8 codes→M47Spondylosis5 codes→M48Other spondylopathies8 codes→M49Spondylopathies in diseases classified elsewhere1 codes→M50Cervical disc disorders6 codes→M51Thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders8 codes→M53Other and unspecified dorsopathies, not elsewhere classified6 codes→M54Dorsalgia9 codes→M60Myositis5 codes→M61Calcification and ossification of muscle7 codes→M62Other disorders of muscle8 codes→M63Disorders of muscle in diseases classified elsewhere1 codes→M65Synovitis and tenosynovitis7 codes→M66Spontaneous rupture of synovium and tendon6 codes→M67Other disorders of synovium and tendon7 codes→M70Soft tissue disorders related to use, overuse and pressure10 codes→M71Other bursopathies8 codes→M72Fibroblastic disorders7 codes→M75Shoulder lesions8 codes→M76Enthesopathies, lower limb, excluding foot10 codes→M77Other enthesopathies8 codes→M79Other and unspecified soft tissue disorders, not elsewhere classified11 codes→M80Osteoporosis with current pathological fracture2 codes→M81Osteoporosis without current pathological fracture3 codes→M83Adult osteomalacia8 codes→M84Disorder of continuity of bone7 codes→M85Other disorders of bone density and structure9 codes→M86Osteomyelitis9 codes→M87Osteonecrosis6 codes→M88Osteitis deformans [Paget's disease of bone]4 codes→M89Other disorders of bone10 codes→M90Osteopathies in diseases classified elsewhere3 codes→M91Juvenile osteochondrosis of hip and pelvis7 codes→M92Other juvenile osteochondrosis10 codes→M93Other osteochondropathies5 codes→M94Other disorders of cartilage6 codes→M95Other acquired deformities of musculoskeletal system and connective tissue8 codes→M96Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified9 codes→M97Periprosthetic fracture around internal prosthetic joint7 codes→M99Biomechanical lesions, not elsewhere classified10 codes→

About This Chapter

Categories:78

Total codes:606+

Billable:0

Non-billable:78

Chapter Contents

Navigate to codes in this chapter

Pyogenic arthritisM00 Direct infections of joint in infectious and parasitic diseases classified elsewhereM01 Postinfective and reactive arthropathiesM02 Autoinflammatory syndromesM04 Rheumatoid arthritis with rheumatoid factorM05 Other rheumatoid arthritisM06 Enteropathic arthropathiesM07 Juvenile arthritisM08 GoutM10 Other crystal arthropathiesM11 Other and unspecified arthropathyM12 Other arthritisM13 Arthropathies in other diseases classified elsewhereM14 PolyosteoarthritisM15 Osteoarthritis of hipM16 Osteoarthritis of kneeM17 Osteoarthritis of first carpometacarpal jointM18 Other and unspecified osteoarthritisM19 Acquired deformities of fingers and toesM20 Other acquired deformities of limbsM21 Disorder of patellaM22 Internal derangement of kneeM23 Other specific joint derangementsM24 Other joint disorder, not elsewhere classifiedM25 Dentofacial anomalies [including malocclusion]M26 Other diseases of jawsM27 Polyarteritis nodosa and related conditionsM30 Other necrotizing vasculopathiesM31 Systemic lupus erythematosus (SLE)M32 DermatopolymyositisM33 Systemic sclerosis [scleroderma]M34 Other systemic involvement of connective tissueM35 Systemic disorders of connective tissue in diseases classified elsewhereM36 Kyphosis and lordosisM40 ScoliosisM41 Spinal osteochondrosisM42 Other deforming dorsopathiesM43 Ankylosing spondylitisM45 Other inflammatory spondylopathiesM46 SpondylosisM47 Other spondylopathiesM48 Spondylopathies in diseases classified elsewhereM49 Cervical disc disordersM50 Thoracic, thoracolumbar, and lumbosacral intervertebral disc disordersM51 Other and unspecified dorsopathies, not elsewhere classifiedM53 DorsalgiaM54 MyositisM60 Calcification and ossification of muscleM61 Other disorders of muscleM62 Disorders of muscle in diseases classified elsewhereM63 Synovitis and tenosynovitisM65 Spontaneous rupture of synovium and tendonM66 Other disorders of synovium and tendonM67 Soft tissue disorders related to use, overuse and pressureM70 Other bursopathiesM71 Fibroblastic disordersM72 Shoulder lesionsM75 Enthesopathies, lower limb, excluding footM76 Other enthesopathiesM77 Other and unspecified soft tissue disorders, not elsewhere classifiedM79 Osteoporosis with current pathological fractureM80 Osteoporosis without current pathological fractureM81 Adult osteomalaciaM83 Disorder of continuity of boneM84 Other disorders of bone density and structureM85 OsteomyelitisM86 OsteonecrosisM87 Osteitis deformans [Paget's disease of bone]M88 Other disorders of boneM89 Osteopathies in diseases classified elsewhereM90 Juvenile osteochondrosis of hip and pelvisM91 Other juvenile osteochondrosisM92 Other osteochondropathiesM93 Other disorders of cartilageM94 Other acquired deformities of musculoskeletal system and connective tissueM95 Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classifiedM96 Periprosthetic fracture around internal prosthetic jointM97 Biomechanical lesions, not elsewhere classifiedM99