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HCPCS code Q4233: Surfactor or Nudyn, per 0.5 cc2026 Medicare rate & RVUs

Reports Surfactor or Nudyn by volume, with each billing unit representing 0.5 cc of the identified product.

CMS RVU26DEffective Oct 1, 2026109 payment localities

Medicare rate · Q4233

Surfactor or Nudyn, per 0.5 cc

Office or facility?

Work RVUs
0
Total RVUs
0.00
Global days
XXX

National rate · 2026

—

Not priced in the facility setting.

See every locality for Q4233 →Billed by an NP, PA or therapist? →

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

Your location

Medicare pays by the payment locality where the service is performed.

On this page 9 sections
  1. Medicare rate
  2. What Q4233 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Billing questions
  9. Sources

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

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

Q4233 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailableUnavailable
AlaskaUnavailableUnavailable
ArizonaUnavailableUnavailable
ArkansasUnavailableUnavailable
Atlanta, GAUnavailableUnavailable
Austin, TXUnavailableUnavailable
Bakersfield, CAUnavailableUnavailable
Baltimore area, MDUnavailableUnavailable
Beaumont, TXUnavailableUnavailable
Brazoria, TXUnavailableUnavailable

Q4233 rates by state

Office rate range in each state. Select a state to see its payment localities.

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
Q4233 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

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

Office or facility?

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

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures9The concept doesn’t apply.
Bilateral (modifier 50)9The concept doesn’t apply.
Assistant at surgery (80/81/82/AS)9The concept doesn’t apply.
Co-surgeons (62)9The concept doesn’t apply.
Team surgery (66)9The concept doesn’t apply.
Professional/technical3Technical component only.

Q4233 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • Q4233

    Surfactor or Nudyn, per 0.5 cc0 wRVU

    Not priced

  • Q4230

    Cogenex flowable amnion, per 0.5 cc0 wRVU

    Not priced

  • Q4240

    Corecyte, topical, per 0.5 cc0 wRVU

    Not priced

  • Q4242

    Amniocyte Plus, per 0.5 cc0 wRVU

    Not priced

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

Open CMS sourceHow we calculate rates

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