ICD-9-CM Vol. 1 Diagnostic Codes
6. DISEASES OF THE NERVOUS SYSTEM AND SENSE ORGANS (320-389)
section notes
DISEASES OF THE EAR AND MASTOID PROCESS (380-389)
section notes
384 Other disorders of tympanic membrane
section notes
384.2 Perforation of tympanic membrane
section notes
384.20   Perforat tympan memb NOS
384.21   Cent perf tympanic memb
384.22   Attic perf tympanic memb
384.23   Marginal perf tymp NEC
384.24   Mult perf tympanic memb
384.25   Total perf tympanic memb
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