D9223Deep Sedation/General Anesthesia - Each Additional 15 Minutes

What This Code Covers

D9223 covers each additional 15-minute increment of deep sedation or general anesthesia beyond the first 15 minutes (which is covered by D9222). This code is reported for each additional 15-minute period and accounts for the continued administration, monitoring, and management of the patient under deep sedation or general anesthesia during extended dental procedures.

Billing Guide

Bill this code when:

• Deep sedation or general anesthesia extends beyond the first 15 minutes (D9222)
• One unit is billed for each additional 15-minute increment
• The anesthesia time is documented with start and end times
• The same level of anesthesia (deep sedation or general) is maintained throughout

Do not bill this code when:

• The total anesthesia time is 15 minutes or less. Bill only D9222
• Moderate (conscious) sedation is being extended. Use D9243
• The time represents post-operative recovery without active anesthesia management
• No anesthesia provider is actively managing the patient

Insurance and Denial Prevention

Key Payer Rules:

• D9223 must always be billed in conjunction with D9222 (the first 15 minutes)
• Some payers cap the number of additional increments they will reimburse
• Time must be documented precisely; partial increments may not be billable depending on the payer
• The same medical necessity requirements as D9222 apply

Common Denials and How to Respond:

• Excessive units - Provide the anesthesia time log showing actual start and stop times, and justify the treatment duration based on the procedures performed.
• Missing D9222 - D9223 cannot be billed without D9222. Verify that D9222 was submitted on the same claim.
• Time documentation insufficient - Submit the anesthesia record with precise times, vital signs, and medications administered throughout the procedure.