13. DISEASES OF THE MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE (710-739)
Use additional external cause code, if applicable, to identify the cause of the musculoskeletal condition
The following fifth-digit subclassification is for use with categories 711-712, 715-716, 718-719, and 730:
0 site unspecified
1 shoulder region
Acromioclavicular joint(s)
Glenohumeral joint(s)
Sternoclavicular joint(s)
Clavicle
Scapula
2 upper arm
Elbow joint
Humerus
3 forearm
Radius
Ulna
Wrist joint
4 hand
Carpus
Metacarpus
Phalanges [fingers]
5 pelvic region and thigh
Buttock
Femur
Hip (joint)
6 lower leg
Fibula
Knee joint
Patella
Tibia
7 ankle and foot
Ankle joint
Digits [toes]
Metatarsus
Phalanges, foot
Tarsus
Other joints in foot
8 other specified sites
Head
Neck
Ribs
Skull
Trunk
Vertebral column
9 multiple sites
RHEUMATISM, EXCLUDING THE BACK (725-729)
Includes:
disorders of muscles and tendons and their attachments, and of other soft tissues
725: Polymyalgia rheumatica
726: Peripheral enthesopathies and allied syndromes
Note:
Enthesopathies are disorders of peripheral ligamentous or muscular attachments.
Excludes:
spinal enthesopathy (720.1)
727: Other disorders of synovium, tendon, and bursa
728: Disorders of muscle, ligament, and fascia
Excludes:
enthesopathies (726.0-726.9)
muscular dystrophies (359.0-359.1)
myoneural disorders (358.00-358.9)
myopathies (359.2-359.9)
nontraumatic hematoma of muscle (729.92)
old disruption of ligaments of knee (717.81-717.89)
729: Other disorders of soft tissues
Excludes:
acroparesthesia (443.89)
carpal tunnel syndrome (354.0)
disorders of the back (720.0-724.9)
entrapment syndromes (354.0-355.9)
palindromic rheumatism (719.3)
periarthritis (726.0-726.9)
psychogenic rheumatism (306.0)

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