What is the best way to describe the importance of ICD-9 diagnosis codes in the following situation: A pediatric dentist has his own practice, but also treats pt’s in a hospital OR setting at times. Where do the ICD-9 codes come into play as far as treatment notes are concerned. The hospital will bill for the facility and anesthesia (the dental office will submit the D-codes). Is there protocol? I understand that the ICD-9’s are diagnosis codes that help explain the “situation” per say. In a dental setting-where do these codes get noted? Thank you for your time :)