HCPCS code Q4233: Surfactor or Nudyn, per 0.5 cc2026 Medicare rate & RVUs in Maine
Reports Surfactor or Nudyn by volume, with each billing unit representing 0.5 cc of the identified product.
CMS doesn’t publish an office rate for Q4233 in Maine.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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What Q4233 covers
Q4233 identifies Surfactor or Nudyn, reported by volume in 0.5-cc units. It distinguishes these named products from other HCPCS products with different names or measurement bases. One unit represents 0.5 cc: 1 cc is two units, and 1.5 cc is three units. The volume basis differs from nearby product codes measured by square centimeter or by the cc.
Medicare lists Q4233 with carrier-priced status (status C), so CMS publishes no national payment amount and the Medicare Administrative Contractor determines payment for each claim. The HCPCS pricing method places contractor pricing under the physician fee schedule. Coverage is left to the contractor's judgment. CMS classifies Q4233 as technical-component-only; a separate code covers interpretation.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Where Q4233 pays more and less in Maine
| Payment locality | Office | Facility |
|---|---|---|
| Rest of Maine | Unavailable | Unavailable |
| Southern Maine, ME | Unavailable | Unavailable |
How the Q4233 rate is calculated
Each of Q4233’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · Q4233
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense0.00
0.00 RVUs× 1.000 GPCI
Malpractice0.00
0.00 RVUs× 1.000 GPCI
Adjusted RVUs
0.0000
Conversion factor
$33.4009
Medicare rate
$0.00
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for Q4233
The CMS indicators that decide how Q4233 is paid alongside other services.
CMS payment indicators · Q4233
Surfactor or Nudyn, per 0.5 cc
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 9 | The concept doesn’t apply. |
| Bilateral (modifier 50) | 9 | The concept doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 9 | The concept doesn’t apply. |
| Co-surgeons (62) | 9 | The concept doesn’t apply. |
| Team surgery (66) | 9 | The concept doesn’t apply. |
| Professional/technical | 3 | Technical component only. |
Q4233 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4230Cogenex flowable amnionPer 0.5 cc
- Q4230 identifies Cogenex Flow Amnion, while Q4233 identifies Surfactor or Nudyn. Both use 0.5-cc units; the product name distinguishes the codes.
- Q4240CorecyteTopical, per 0.5 cc
- Q4240 identifies Corecyte as topical-only and uses 0.5-cc units. Q4233 identifies Surfactor or Nudyn; use the code matching the product.
- Q4242Amniocyte PlusPer 0.5 cc
- Q4242 identifies Amniocyte Plus and uses 0.5-cc units. Q4233 is for Surfactor or Nudyn; the named product distinguishes the codes.
Q4233 billing questions
How many units should be reported?
Each unit represents 0.5 cc. For example, 1 cc is two units; report the number of units corresponding to the product volume.
How does Q4233 differ from a product code measured by area?
Q4233 identifies Surfactor or Nudyn and is billed in 0.5-cc units. Product codes measured by square centimeter use an area-based unit instead.
Does Medicare publish a national payment amount for Q4233?
No. Q4233 is carrier priced under the physician fee schedule, with the Medicare Administrative Contractor determining payment for each claim.
Who decides whether Medicare covers Q4233?
Coverage is left to the Medicare contractor's judgment.
Does Q4233 include interpretation?
No. CMS classifies Q4233 as technical-component-only, with a separate code covering interpretation.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
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