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Otolaryngology Coding Alert

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Determine Sialolithotomy Complexity Using these Factors

Question: The surgeon performed a sub-mandibular sialolithotomy to remove multiple stones from the submandibular salivary gland. The procedure was intraoral, but I can't figure out how to differentiate between 42330 and 42335 as the correct code. Can you help? California Subscriber Answer: The two codes in question are differentiated by level of complexity: 42330, Sialolithotomy; submandibular (submaxillary), sublingual or parotid, [...]