9. DISEASES OF THE DIGESTIVE SYSTEM (520-579)
APPENDICITIS (540-543)
540: Acute appendicitis
541: Appendicitis, unqualified
542: Other appendicitis
Appendicitis:
chronic
recurrent
relapsing
subacute
Excludes:
hyperplasia (lymphoid) of appendix (543.0)
543: Other diseases of appendix
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