ICD-9-CM Vol. 1 Diagnostic Codes

9. DISEASES OF THE DIGESTIVE SYSTEM (520-579)

section notes

DISEASES OF ORAL CAVITY, SALIVARY GLANDS, AND JAWS (520-529)

section notes

523 Gingival and periodontal diseases

section notes

523.4 Chronic periodontitis

section notes
523.40   Chronc periodontitis NOS
523.41   Chr periodontitis, local
523.42   Chron periodontitis,gen
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