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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)

Other osteopathies (M86-M90)

Excludes 1:: postprocedural osteopathies (M96.-)

M86

Osteomyelitis [+]

Use additional	code (B95-B97) to identify infectious agent
Use additional	code to identify major osseous defect, if applicable (M89.7-)
Excludes 1:	osteomyelitis due to: echinococcus (B67.2) gonococcus (A54.43) salmonella (A02.24)
Excludes 2:	ostemyelitis of: orbit (H05.0-) petrous bone (H70.2-) vertebra (M46.2-)

M86.0

Acute hematogenous osteomyelitis [+]

M86.00

Acute hematogenous osteomyelitis, unspecified site

M86.01

Acute hematogenous osteomyelitis, shoulder [+]

M86.02

Acute hematogenous osteomyelitis, humerus [+]

M86.03

Acute hematogenous osteomyelitis, radius and ulna [+]

M86.04

Acute hematogenous osteomyelitis, hand [+]

M86.05

Acute hematogenous osteomyelitis, femur [+]

M86.06

Acute hematogenous osteomyelitis, tibia and fibula [+]

M86.07

Acute hematogenous osteomyelitis, ankle and foot [+]

M86.08

Acute hematogenous osteomyelitis, other sites

M86.09

Acute hematogenous osteomyelitis, multiple sites

M86.1

Other acute osteomyelitis [+]

M86.10

Other acute osteomyelitis, unspecified site

M86.11

Other acute osteomyelitis, shoulder [+]

M86.12

Other acute osteomyelitis, humerus [+]

M86.13

Other acute osteomyelitis, radius and ulna [+]

M86.14

Other acute osteomyelitis, hand [+]

M86.15

Other acute osteomyelitis, femur [+]

M86.16

Other acute osteomyelitis, tibia and fibula [+]

M86.17

Other acute osteomyelitis, ankle and foot [+]

M86.18

Other acute osteomyelitis, other site

M86.19

Other acute osteomyelitis, multiple sites

M86.2

Subacute osteomyelitis [+]

M86.20

Subacute osteomyelitis, unspecified site

M86.21

Subacute osteomyelitis, shoulder [+]

M86.22

Subacute osteomyelitis, humerus [+]

M86.23

Subacute osteomyelitis, radius and ulna [+]

M86.24

Subacute osteomyelitis, hand [+]

M86.25

Subacute osteomyelitis, femur [+]

M86.26

Subacute osteomyelitis, tibia and fibula [+]

M86.27

Subacute osteomyelitis, ankle and foot [+]

M86.28

Subacute osteomyelitis, other site

M86.29

Subacute osteomyelitis, multiple sites

M86.3

Chronic multifocal osteomyelitis [+]

M86.30

Chronic multifocal osteomyelitis, unspecified site

M86.31

Chronic multifocal osteomyelitis, shoulder [+]

M86.32

Chronic multifocal osteomyelitis, humerus [+]

M86.33

Chronic multifocal osteomyelitis, radius and ulna [+]

M86.34

Chronic multifocal osteomyelitis, hand [+]

M86.35

Chronic multifocal osteomyelitis, femur [+]

M86.36

Chronic multifocal osteomyelitis, tibia and fibula [+]

M86.37

Chronic multifocal osteomyelitis, ankle and foot [+]

M86.38

Chronic multifocal osteomyelitis, other site

M86.39

Chronic multifocal osteomyelitis, multiple sites

M86.4

Chronic osteomyelitis with draining sinus [+]

M86.40

Chronic osteomyelitis with draining sinus, unspecified site

M86.41

Chronic osteomyelitis with draining sinus, shoulder [+]

M86.42

Chronic osteomyelitis with draining sinus, humerus [+]

M86.43

Chronic osteomyelitis with draining sinus, radius and ulna [+]

M86.44

Chronic osteomyelitis with draining sinus, hand [+]

M86.45

Chronic osteomyelitis with draining sinus, femur [+]

M86.46

Chronic osteomyelitis with draining sinus, tibia and fibula [+]

M86.47

Chronic osteomyelitis with draining sinus, ankle and foot [+]

M86.48

Chronic osteomyelitis with draining sinus, other site

M86.49

Chronic osteomyelitis with draining sinus, multiple sites

M86.5

Other chronic hematogenous osteomyelitis [+]

M86.50

Other chronic hematogenous osteomyelitis, unspecified site

M86.51

Other chronic hematogenous osteomyelitis, shoulder [+]

M86.52

Other chronic hematogenous osteomyelitis, humerus [+]

M86.53

Other chronic hematogenous osteomyelitis, radius and ulna [+]

M86.54

Other chronic hematogenous osteomyelitis, hand [+]

M86.55

Other chronic hematogenous osteomyelitis, femur [+]

M86.56

Other chronic hematogenous osteomyelitis, tibia and fibula [+]

M86.57

Other chronic hematogenous osteomyelitis, ankle and foot [+]

M86.58

Other chronic hematogenous osteomyelitis, other site

M86.59

Other chronic hematogenous osteomyelitis, multiple sites

M86.6

Other chronic osteomyelitis [+]

M86.60

Other chronic osteomyelitis, unspecified site

M86.61

Other chronic osteomyelitis, shoulder [+]

M86.62

Other chronic osteomyelitis, humerus [+]

M86.63

Other chronic osteomyelitis, radius and ulna [+]

M86.64

Other chronic osteomyelitis, hand [+]

M86.65

Other chronic osteomyelitis, thigh [+]

M86.66

Other chronic osteomyelitis, tibia and fibula [+]

M86.67

Other chronic osteomyelitis, ankle and foot [+]

M86.68

Other chronic osteomyelitis, other site

M86.69

Other chronic osteomyelitis, multiple sites

M86.8

Other osteomyelitis [+]
Brodie's abscess

M86.9

Osteomyelitis, unspecified
Infection of bone NOS
Periostitis without osteomyelitis

M87

Osteonecrosis [+]

Includes:	avascular necrosis of bone
Use additional	code to identify major osseous defect, if applicable (M89.7-)
Excludes 1:	juvenile osteonecrosis (M91-M92) osteochondropathies (M90-M93)

M87.0

Idiopathic aseptic necrosis of bone [+]

M87.00

Idiopathic aseptic necrosis of unspecified bone

M87.01

Idiopathic aseptic necrosis of shoulder [+]
Idiopathic aseptic necrosis of clavicle and scapula

M87.02

Idiopathic aseptic necrosis of humerus [+]

M87.03

Idiopathic aseptic necrosis of radius, ulna and carpus [+]

M87.04

Idiopathic aseptic necrosis of hand and fingers [+]
Idiopathic aseptic necrosis of metacarpals and phalanges of hands

M87.05

Idiopathic aseptic necrosis of pelvis and femur [+]

M87.06

Idiopathic aseptic necrosis of tibia and fibula [+]

M87.07

Idiopathic aseptic necrosis of ankle, foot and toes [+]
Idiopathic aseptic necrosis of metatarsus, tarsus, and phalanges of toes

M87.08

Idiopathic aseptic necrosis of bone, other site

M87.09

Idiopathic aseptic necrosis of bone, multiple sites

M87.1

Osteonecrosis due to drugs [+]

Use additional

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

M87.10

Osteonecrosis due to drugs, unspecified bone

M87.11

Osteonecrosis due to drugs, shoulder [+]

M87.12

Osteonecrosis due to drugs, humerus [+]

M87.13

Osteonecrosis due to drugs of radius, ulna and carpus [+]

M87.14

Osteonecrosis due to drugs, hand and fingers [+]

M87.15

Osteonecrosis due to drugs, pelvis and femur [+]

M87.16

Osteonecrosis due to drugs, tibia and fibula [+]

M87.17

Osteonecrosis due to drugs, ankle, foot and toes [+]

M87.18

Osteonecrosis due to drugs, other site [+]

M87.19

Osteonecrosis due to drugs, multiple sites

M87.2

Osteonecrosis due to previous trauma [+]

M87.20

Osteonecrosis due to previous trauma, unspecified bone

M87.21

Osteonecrosis due to previous trauma, shoulder [+]

M87.22

Osteonecrosis due to previous trauma, humerus [+]

M87.23

Osteonecrosis due to previous trauma of radius, ulna and carpus [+]

M87.24

Osteonecrosis due to previous trauma, hand and fingers [+]

M87.25

Osteonecrosis due to previous trauma, pelvis and femur [+]

M87.26

Osteonecrosis due to previous trauma, tibia and fibula [+]

M87.27

Osteonecrosis due to previous trauma, ankle, foot and toes [+]

M87.28

Osteonecrosis due to previous trauma, other site

M87.29

Osteonecrosis due to previous trauma, multiple sites

M87.3

Other secondary osteonecrosis [+]

M87.30

Other secondary osteonecrosis, unspecified bone

M87.31

Other secondary osteonecrosis, shoulder [+]

M87.32

Other secondary osteonecrosis, humerus [+]

M87.33

Other secondary osteonecrosis of radius, ulna and carpus [+]

M87.34

Other secondary osteonecrosis, hand and fingers [+]

M87.35

Other secondary osteonecrosis, pelvis and femur [+]

M87.36

Other secondary osteonecrosis, tibia and fibula [+]

M87.37

Other secondary osteonecrosis, ankle and foot [+]

M87.38

Other secondary osteonecrosis, other site

M87.39

Other secondary osteonecrosis, multiple sites

M87.8

Other osteonecrosis [+]

M87.80

Other osteonecrosis, unspecified bone

M87.81

Other osteonecrosis, shoulder [+]

M87.82

Other osteonecrosis, humerus [+]

M87.83

Other osteonecrosis of radius, ulna and carpus [+]

M87.84

Other osteonecrosis, hand and fingers [+]

M87.85

Other osteonecrosis, pelvis and femur [+]

M87.86

Other osteonecrosis, tibia and fibula [+]

M87.87

Other osteonecrosis, ankle, foot and toes [+]

M87.88

Other osteonecrosis, other site

M87.89

Other osteonecrosis, multiple sites

M87.9

Osteonecrosis, unspecified
Necrosis of bone NOS

M88

Osteitis deformans [Paget's disease of bone] [+]

Excludes 1:

osteitis deformans in neoplastic disease (M90.6)

M88.0

Osteitis deformans of skull

M88.1

Osteitis deformans of vertebrae

M88.8

Osteitis deformans of other bones [+]

M88.81

Osteitis deformans of shoulder [+]

M88.82

Osteitis deformans of upper arm [+]

M88.83

Osteitis deformans of forearm [+]

M88.84

Osteitis deformans of hand [+]

M88.85

Osteitis deformans of thigh [+]

M88.86

Osteitis deformans of lower leg [+]

M88.87

Osteitis deformans of ankle and foot [+]

M88.88

Osteitis deformans of other bones

Excludes 2:

osteitis deformans of skull (M88.0)
osteitis deformans of vertebrae (M88.1)

M88.89

Osteitis deformans of multiple sites

M88.9

Osteitis deformans of unspecified bone

M89

Other disorders of bone [+]

M89.0

Algoneurodystrophy [+]
Shoulder-hand syndrome
Sudeck's atrophy

Excludes 1:

causalgia, lower limb (G57.7-)
causalgia, upper limb (G56.4-)
complex regional pain syndrome II, lower limb (G57.7-)
complex regional pain syndrome II, upper limb (G56.4-)
reflex sympathetic dystrophy (G90.5-)

M89.00

Algoneurodystrophy, unspecified site

M89.01

Algoneurodystrophy, shoulder [+]

M89.02

Algoneurodystrophy, upper arm [+]

M89.03

Algoneurodystrophy, forearm [+]

M89.04

Algoneurodystrophy, hand [+]

M89.05

Algoneurodystrophy, thigh [+]

M89.06

Algoneurodystrophy, lower leg [+]

M89.07

Algoneurodystrophy, ankle and foot [+]

M89.08

Algoneurodystrophy, other site

M89.09

Algoneurodystrophy, multiple sites

M89.1

Physeal arrest [+]
Arrest of growth plate
Epiphyseal arrest
Growth plate arrest

M89.12

Physeal arrest, humerus [+]

M89.13

Physeal arrest, forearm [+]

M89.15

Physeal arrest, femur [+]

M89.16

Physeal arrest, lower leg [+]

M89.18

Physeal arrest, other site

M89.2

Other disorders of bone development and growth [+]

M89.20

Other disorders of bone development and growth, unspecified site

M89.21

Other disorders of bone development and growth, shoulder [+]

M89.22

Other disorders of bone development and growth, humerus [+]

M89.23

Other disorders of bone development and growth, ulna and radius [+]

M89.24

Other disorders of bone development and growth, hand [+]

M89.25

Other disorders of bone development and growth, femur [+]

M89.26

Other disorders of bone development and growth, tibia and fibula [+]

M89.27

Other disorders of bone development and growth, ankle and foot [+]

M89.28

Other disorders of bone development and growth, other site

M89.29

Other disorders of bone development and growth, multiple sites

M89.3

Hypertrophy of bone [+]

M89.30

Hypertrophy of bone, unspecified site

M89.31

Hypertrophy of bone, shoulder [+]

M89.32

Hypertrophy of bone, humerus [+]

M89.33

Hypertrophy of bone, ulna and radius [+]

M89.34

Hypertrophy of bone, hand [+]

M89.35

Hypertrophy of bone, femur [+]

M89.36

Hypertrophy of bone, tibia and fibula [+]

M89.37

Hypertrophy of bone, ankle and foot [+]

M89.38

Hypertrophy of bone, other site

M89.39

Hypertrophy of bone, multiple sites

M89.4

Other hypertrophic osteoarthropathy [+]
Marie-Bamberger disease
Pachydermoperiostosis

M89.40

Other hypertrophic osteoarthropathy, unspecified site

M89.41

Other hypertrophic osteoarthropathy, shoulder [+]

M89.42

Other hypertrophic osteoarthropathy, upper arm [+]

M89.43

Other hypertrophic osteoarthropathy, forearm [+]

M89.44

Other hypertrophic osteoarthropathy, hand [+]

M89.45

Other hypertrophic osteoarthropathy, thigh [+]

M89.46

Other hypertrophic osteoarthropathy, lower leg [+]

M89.47

Other hypertrophic osteoarthropathy, ankle and foot [+]

M89.48

Other hypertrophic osteoarthropathy, other site

M89.49

Other hypertrophic osteoarthropathy, multiple sites

M89.5

Osteolysis [+]

Use additional	code to identify major osseous defect, if applicable (M89.7-)
Excludes 2:	periprosthetic osteolysis of internal prosthetic joint (T84.05-)

M89.50

Osteolysis, unspecified site

M89.51

Osteolysis, shoulder [+]

M89.52

Osteolysis, upper arm [+]

M89.53

Osteolysis, forearm [+]

M89.54

Osteolysis, hand [+]

M89.55

Osteolysis, thigh [+]

M89.56

Osteolysis, lower leg [+]

M89.57

Osteolysis, ankle and foot [+]

M89.58

Osteolysis, other site

M89.59

Osteolysis, multiple sites

M89.6

Osteopathy after poliomyelitis [+]

Use additional	code (B91) to identify previous poliomyelitis
Excludes 1:	postpolio syndrome (G14)

M89.60

Osteopathy after poliomyelitis, unspecified site

M89.61

Osteopathy after poliomyelitis, shoulder [+]

M89.62

Osteopathy after poliomyelitis, upper arm [+]

M89.63

Osteopathy after poliomyelitis, forearm [+]

M89.64

Osteopathy after poliomyelitis, hand [+]

M89.65

Osteopathy after poliomyelitis, thigh [+]

M89.66

Osteopathy after poliomyelitis, lower leg [+]

M89.67

Osteopathy after poliomyelitis, ankle and foot [+]

M89.68

Osteopathy after poliomyelitis, other site

M89.69

Osteopathy after poliomyelitis, multiple sites

M89.7

Major osseous defect [+]

Code first

underlying disease, if known, such as:
aseptic necrosis of bone (M87.-)
malignant neoplasm of bone (C40.-)
osteolysis (M89.5-)
osteomyelitis (M86.-)
osteonecrosis (M87.-)
osteoporosis (M80.-, M81.-)
periprosthetic osteolysis (T84.05-)

M89.70

Major osseous defect, unspecified site

M89.71

Major osseous defect, shoulder region [+]
Major osseous defect clavicle or scapula

M89.72

Major osseous defect, humerus [+]

M89.73

Major osseous defect, forearm [+]
Major osseous defect of radius and ulna

M89.74

Major osseous defect, hand [+]
Major osseous defect of carpus, fingers, metacarpus

M89.75

Major osseous defect, pelvic region and thigh [+]
Major osseous defect of femur and pelvis

M89.76

Major osseous defect, lower leg [+]
Major osseous defect of fibula and tibia

M89.77

Major osseous defect, ankle and foot [+]
Major osseous defect of metatarsus, tarsus, toes

M89.78

Major osseous defect, other site

M89.79

Major osseous defect, multiple sites

M89.8

Other specified disorders of bone [+]
Infantile cortical hyperostoses
Post-traumatic subperiosteal ossification

M89.8X

Other specified disorders of bone [+]

M89.9

Disorder of bone, unspecified

M90

Osteopathies in diseases classified elsewhere [+]

Excludes 1:

osteochondritis, osteomyelitis, and osteopathy (in):
cryptococcosis (B45.3)
diabetes mellitus (E08-E13 with .69-)
gonococcal (A54.43)
neurogenic syphilis (A52.11)
renal osteodystrophy (N25.0)
salmonellosis (A02.24)
secondary syphilis (A51.46)
syphilis (late) (A52.77)

M90.5

Osteonecrosis in diseases classified elsewhere [+]

Code first

underlying disease, such as:
caisson disease (T70.3)
hemoglobinopathy (D50-D64)

M90.50

Osteonecrosis in diseases classified elsewhere, unspecified site

M90.51

Osteonecrosis in diseases classified elsewhere, shoulder [+]

M90.52

Osteonecrosis in diseases classified elsewhere, upper arm [+]

M90.53

Osteonecrosis in diseases classified elsewhere, forearm [+]

M90.54

Osteonecrosis in diseases classified elsewhere, hand [+]

M90.55

Osteonecrosis in diseases classified elsewhere, thigh [+]

M90.56

Osteonecrosis in diseases classified elsewhere, lower leg [+]

M90.57

Osteonecrosis in diseases classified elsewhere, ankle and foot [+]

M90.58

Osteonecrosis in diseases classified elsewhere, other site

M90.59

Osteonecrosis in diseases classified elsewhere, multiple sites

M90.6

Osteitis deformans in neoplastic diseases [+]
Osteitis deformans in malignant neoplasm of bone

Code first	the neoplasm (C40.-, C41.-)
Excludes 1:	osteitis deformans [Paget's disease of bone] (M88.-)

M90.60

Osteitis deformans in neoplastic diseases, unspecified site

M90.61

Osteitis deformans in neoplastic diseases, shoulder [+]

M90.62

Osteitis deformans in neoplastic diseases, upper arm [+]

M90.63

Osteitis deformans in neoplastic diseases, forearm [+]

M90.64

Osteitis deformans in neoplastic diseases, hand [+]

M90.65

Osteitis deformans in neoplastic diseases, thigh [+]

M90.66

Osteitis deformans in neoplastic diseases, lower leg [+]

M90.67

Osteitis deformans in neoplastic diseases, ankle and foot [+]

M90.68

Osteitis deformans in neoplastic diseases, other site

M90.69

Osteitis deformans in neoplastic diseases, multiple sites

M90.8

Osteopathy in diseases classified elsewhere [+]

Code first

underlying disease, such as:
rickets (E55.0)
vitamin-D-resistant rickets (E83.31)

M90.80

Osteopathy in diseases classified elsewhere, unspecified site

M90.81

Osteopathy in diseases classified elsewhere, shoulder [+]

M90.82

Osteopathy in diseases classified elsewhere, upper arm [+]

M90.83

Osteopathy in diseases classified elsewhere, forearm [+]

M90.84

Osteopathy in diseases classified elsewhere, hand [+]

M90.85

Osteopathy in diseases classified elsewhere, thigh [+]

M90.86

Osteopathy in diseases classified elsewhere, lower leg [+]

M90.87

Osteopathy in diseases classified elsewhere, ankle and foot [+]

M90.88

Osteopathy in diseases classified elsewhere, other site

M90.89

Osteopathy in diseases classified elsewhere, multiple sites