No office rate
Use 93585 for azygos or hemiazygos imaging; 93584 identifies venography directed at an anomalous or persistent superior vena cava.
On this page
CMS RVU26D · Effective 2026-10-01
93585 Congenital venography Medicare reimbursement rates in California
Reports targeted venous imaging of the azygos or hemiazygos system during congenital cardiac catheterization when its course or connections need evaluation. Compare 93585 office and facility rates across CMS payment localities in California.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 93585 in California?
California has 29 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 29 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$46.31–$52.15
29 of 29 localities have a supported rate.
Lowest: Chico
Highest: San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
A spread of $5.84 per service.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Where 93585 pays more and less in California
Congenital cardiac catheterization
About 93585: Azygos or hemiazygos venography for congenital heart disease
Reports targeted venous imaging of the azygos or hemiazygos system during congenital cardiac catheterization when its course or connections need evaluation.
This add-on service captures catheter-based contrast imaging of the azygos or hemiazygos venous system in a patient with congenital heart disease. A congenital cardiac catheterization team may use it to define an unusual venous route or connection, such as an azygos pathway in a patient with interrupted inferior vena cava. The imaging can help explain catheter course and venous return or guide procedural planning.
Report 93585 only with an eligible primary congenital heart catheterization, such as codes 93593–93597; it is not a stand-alone service. The record should support why this specific venous territory was imaged and document the catheter injection and resulting images or interpretation. CMS classifies the code as an add-on and pays it within the primary procedure’s global period.
CMS billing rules for 93585
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
Where the value comes from
- Work RVU1.10 · 80%
- Practice expense (office) RVU0.21 · 15%
- Malpractice RVU0.07 · 5%
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.
93585 compared with similar codes
Office rates for California, from the same CMS release.
No office rate
Use 93586 when the coronary sinus is the target. 93585 is specific to the azygos or hemiazygos venous system.
No office rate
93587 addresses venovenous collateral vessels at or above the heart; 93585 describes imaging of the azygos or hemiazygos system.
No office rate
93588 addresses venovenous collateral vessels below the heart. Use 93585 when the imaged target is the azygos or hemiazygos system.
Compare 93585 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
29 of 29 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Bakersfield | Office Unavailable | Facility $46.55 |
| Chico | Office Unavailable | Facility $46.31 |
| El Centro | Office Unavailable | Facility $46.32 |
| Fresno | Office Unavailable | Facility $46.31 |
| Hanford-Corcoran | Office Unavailable | Facility $46.31 |
| Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty) | Office Unavailable | Facility $48.10 |
| Madera | Office Unavailable | Facility $46.31 |
| Merced | Office Unavailable | Facility $46.31 |
| Modesto | Office Unavailable | Facility $46.31 |
| Napa | Office Unavailable | Facility $49.49 |
| Oxnard-Thousand Oaks-Ventura | Office Unavailable | Facility $47.52 |
| Redding | Office Unavailable | Facility $46.31 |
| Rest Of California | Office Unavailable | Facility $46.31 |
| Riverside-San Bernardino-Ontario | Office Unavailable | Facility $47.08 |
| Sacramento-Roseville-Folsom | Office Unavailable | Facility $47.47 |
| Salinas | Office Unavailable | Facility $47.26 |
| San Diego-Chula Vista-Carlsbad | Office Unavailable | Facility $47.50 |
| San Francisco-Oakland-Berkeley (Marin Cnty) | Office Unavailable | Facility $51.19 |
| San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty) | Office Unavailable | Facility $51.12 |
| San Jose-Sunnyvale-Santa Clara (San Benito Cnty) | Office Unavailable | Facility $52.15 |
| San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty) | Office Unavailable | Facility $51.83 |
| San Luis Obispo-Paso Robles | Office Unavailable | Facility $46.61 |
| Santa Cruz-Watsonville | Office Unavailable | Facility $47.29 |
| Santa Maria-Santa Barbara | Office Unavailable | Facility $47.20 |
| Santa Rosa-Petaluma | Office Unavailable | Facility $47.71 |
| Stockton | Office Unavailable | Facility $46.31 |
| Vallejo | Office Unavailable | Facility $49.37 |
| Visalia | Office Unavailable | Facility $46.31 |
| Yuba City | Office Unavailable | Facility $46.31 |
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93585 billing questions
Can 93585 be submitted by itself?
No. It is an add-on for azygos or hemiazygos venography and must be reported with an eligible primary congenital heart catheterization, such as 93593–93597.
How is 93585 different from 93584?
93585 is for imaging the azygos or hemiazygos system. 93584 concerns venography of an anomalous or persistent superior vena cava.
When would 93585 be more appropriate than 93586?
Choose based on the vessel imaged: 93585 addresses the azygos or hemiazygos system, while 93586 addresses the coronary sinus.
What documentation supports reporting 93585?
Document the clinical reason for imaging this venous pathway, the catheter-based contrast study, and the resulting images or interpretation.
How does the add-on payment rule affect billing?
CMS requires 93585 to accompany a primary procedure and places payment within that procedure’s global period.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
12,15193582,,Perq transcath closure pda,A,,12.00,2.24,NA,2.24,,2.87,17.11,17.11,0,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15293583,,Perq transcath septal reduxn,A,,13.41,2.58,NA,2.58,,3.20,19.19,19.19,0,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15393584,,Vngrph chd anom/persist svc,A,,1.17,0.22,NA,0.22,,0.07,1.46,1.46,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15493585,,Vngrph chd azygs/hemiazygs,A,,1.10,0.21,NA,0.21,,0.07,1.38,1.38,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15593586,,Vngrph chd coronary sinus,A,,1.39,0.31,NA,0.31,,0.08,1.78,1.78,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15693587,,Vngrph chd vnvn cltrl at/abv,A,,2.06,0.38,NA,0.38,,0.15,2.59,2.59,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15793588,,Vngrph chd vnvn cltrl below,A,,2.08,0.38,NA,0.38,,0.15,2.61,2.61,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00