Billing code 93575: MAPCA angiographyMedicare rate & RVUs in Washington
Selective contrast imaging of major aortopulmonary collateral arteries during congenital cardiac catheterization maps collateral blood supply to the lungs.
Medicare pays $91.20–$97.82 for 93575 in the office in Washington, from Rest Of Washington to Seattle (King Cnty). Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What 93575 covers
93575 captures selective contrast angiography of major aortopulmonary collateral arteries (MAPCAs) during congenital cardiac catheterization. The operator selectively enters collateral vessels and injects contrast to show their origins, courses, and pulmonary distribution. This may be useful in complex congenital heart disease, including pulmonary atresia, when MAPCAs supply lung segments. A congenital or interventional cardiologist typically performs the service in a cardiac catheterization laboratory.
Report 93575 when selective imaging of MAPCAs is performed, rather than for a general pulmonary artery injection. The catheterization report should identify the collateral vessels entered, describe the contrast imaging and findings, and explain the clinical reason for the study. This is an add-on code: submit it with a primary procedure, not as a standalone service. CMS pays it within the primary procedure’s global period.
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 93575 pays more and less in Washington
| Payment locality | Office | Facility |
|---|---|---|
| Rest Of Washington | $91.20 | $78.89 |
| Seattle (King Cnty) | $97.82 | $83.47 |
How the 93575 rate is calculated
Each of 93575’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 · 93575
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 1.87Practice expense 0.70Malpractice 0.13
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 93575
The CMS indicators that decide how 93575 is paid alongside other services.
CMS payment indicators · 93575
MAPCA angiography
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
93575 compared with similar codes
Compare codes
93575 vs 93568 vs 93573 vs 93574: national Medicare rates
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How to choose
- 93568Pulmonary angiography
- Choose 93575 for selective imaging of MAPCAs; 93568 describes nonselective pulmonary angiography.
- 93573Pulmonary angiography
- 93573 describes selective bilateral pulmonary angiography. 93575 is specific to selective imaging of major aortopulmonary collateral arteries.
- 93574Pulmonary venography
- 93574 is for selective pulmonary venous angiography. Use 93575 when the selectively imaged vessels are MAPCAs.
93575 billing questions
Can 93575 be reported by itself?
No. It is an add-on code and must be reported with a primary procedure; CMS pays it within that procedure’s global period.
How is 93575 different from 93568?
93575 is for selective imaging of MAPCAs. 93568 describes nonselective pulmonary angiography, rather than selective collateral-vessel imaging.
How is 93575 different from 93573?
93575 targets major aortopulmonary collateral arteries. 93573 describes selective bilateral pulmonary angiography, not selective MAPCA angiography.
What documentation supports reporting 93575?
The catheterization report should identify the MAPCA vessel or vessels selectively entered and document the contrast imaging, findings, and clinical purpose.
Does 93575 describe pulmonary venous imaging?
No. It describes selective MAPCA imaging; 93574 is the neighboring code for selective pulmonary venous angiography.
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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