D9243Intravenous Moderate (Conscious) Sedation/Analgesia - Each Additional 15 Minutes

What This Code Covers

D9243 covers each additional 15-minute increment of intravenous moderate (conscious) sedation/analgesia beyond the first 15 minutes (which is covered by D9239). This code is reported for each additional 15-minute period during which the patient remains under IV moderate sedation, accounting for continued sedation management, monitoring, and medication adjustments.

Billing Guide

Bill this code when:

• IV moderate sedation extends beyond the first 15 minutes (D9239)
• One unit is billed for each additional 15-minute increment
• The same level of moderate sedation is maintained throughout
• Sedation time is documented with start and end times

Do not bill this code when:

• The total sedation time is 15 minutes or less. Bill only D9239
• Deep sedation or general anesthesia time is being extended. Use D9223
• The time represents post-sedation recovery without active sedation management
• No IV sedation medications are being actively administered or titrated

Insurance and Denial Prevention

Key Payer Rules:

• D9243 must always be billed in conjunction with D9239 (the first 15 minutes)
• Some payers cap the total number of sedation increments reimbursed
• Time documentation must be precise; rounding rules vary by payer
• The same pre-authorization and medical necessity requirements as D9239 apply

Common Denials and How to Respond:

• Excessive units - Provide the sedation time log with exact start and stop times and justify the duration based on procedures performed.
• Missing D9239 - D9243 cannot be billed without D9239. Ensure D9239 is on the same claim.
• Should be D9223 - Clarify the sedation level. D9243 is for moderate sedation (patient responsive to commands); D9223 is for deep sedation/general anesthesia (patient not easily aroused).