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Table 2 Number of Diagnosis Codes per subspecialty

From: Consultation diagnoses and procedures billed among recent graduates practicing general otolaryngology – head & neck surgery in Ontario, Canada

Subspecialty Number of ICD-9 Diagnosis Codes
General 85
Head and Neck 22
Endocrine 13
Pediatric 10
Otology 10
Rhinology 6
Facial Plastics 3