ICD-9-CM Vol. 1 Diagnostic Codes →
9. DISEASES OF THE DIGESTIVE SYSTEM (520-579) →
section notes
APPENDICITIS (540-543) →
section notes
540.0‑540.9   540 Acute appendicitis
541‑541   541 Appendicitis, unqualified
542‑542   542 Other appendicitis
543.0‑543.9   543 Other diseases of appendix
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