712 Crystal arthropathies
Includes: crystal-induced arthritis and synovitis
Excludes: gouty arthropathy (274.00-274.03)
The following fifth-digit subclassification is for use with category 712; valid digits are in [brackets] under each code. see list at beginning of chapter for definitions:
0 site unspecified
1 shoulder region
2 upper arm
3 forearm
4 hand
5 pelvic region and thigh
6 lower leg
7 ankle and foot
8 other specified sites
9 multiple sites
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