CPT 93596Cardiology

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CPT code 93596 covers a diagnostic heart catheterization procedure where catheters are inserted into both the right and left sides of the heart to evaluate congenital heart defects in patients born with heart abnormalities who do not have a septal defect or patent foramen ovale.

Showing rates for

National Average

Base Medicare rate

$305.67

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

6.84

PE RVU (NF)

2.4

MP RVU

0.21

Total RVU

9.45

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Document the specific congenital heart disease diagnosis and explicitly state that no septal defect or PFO was used for catheter passage
Impact: Prevents denial for incorrect code selection; distinguishes from CPT 93597 which covers cases with transseptal passage
Verify patient age and congenital diagnosis are clearly documented; this code is specific to native uncorrected congenital disease, not acquired conditions
Impact: Avoids downcoding to general cardiac catheterization codes (93451-93461) which may reimburse $50-150 less
Bill separately for any interventional procedures performed during the same session using appropriate add-on codes
Impact: Can add $500-3000+ in additional reimbursement when balloon angioplasty, stent placement, or other interventions are performed
Ensure hemodynamic report includes pressure measurements from all accessed chambers (RA, RV, PA, LA, LV, Ao) with oximetry data
Impact: Comprehensive documentation supports medical necessity and reduces audit risk that could result in full recoupment of $305.67
Submit with ICD-10 codes from Q20-Q26 range (congenital malformations of cardiac chambers and connections) rather than acquired heart disease codes
Impact: Proper diagnosis coding reduces claim rejection rate by 30-40% and supports medical necessity
Consider checking if the procedure meets criteria for bilateral modifier if separate access sites or imaging is required for complex anatomy
Impact: While rare for this code, properly documented bilateral procedures may qualify for additional 50% reimbursement ($152.84 additional)

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Frequently asked questions

What is the Medicare reimbursement rate for CPT code 93596 in 2025?

The 2025 Medicare national average reimbursement rate for CPT 93596 is $305.67 for both facility and non-facility settings. This rate is based on 9.45 total RVUs (6.84 work RVU, 2.4 PE RVU, 0.21 MP RVU) multiplied by the 2025 conversion factor of 32.3465.

What is the difference between CPT codes 93596 and 93597?

CPT 93596 is used for right and left heart catheterization in congenital heart disease when separate arterial and venous access is used without crossing a septal defect. CPT 93597 is used when the catheter crosses from right to left heart (or vice versa) through a septal defect, patent foramen ovale, or via transseptal puncture. The access route must be clearly documented to select the correct code.

Can CPT 93596 be billed with an interventional procedure code?

Yes, CPT 93596 can be billed separately from interventional procedures (such as balloon angioplasty, stent placement, or device closure) performed during the same session. The diagnostic catheterization must be medically necessary and distinct from the intervention, or performed to assess results post-intervention. Modifier 59 may be required depending on payer policy.

What diagnosis codes support medical necessity for CPT 93596?

ICD-10 codes from the Q20-Q26 range (congenital malformations of cardiac chambers and connections) support medical necessity, including Q21.3 (tetralogy of Fallot), Q20.3 (discordant ventriculoarterial connection), Q25.1 (coarctation of aorta), and other specific congenital heart defect codes. Acquired heart disease codes (I codes) typically do not support this code.

How many RVUs is CPT code 93596 worth in 2025?

CPT code 93596 has a total of 9.45 RVUs in 2025, consisting of 6.84 work RVUs, 2.4 practice expense RVUs (both facility and non-facility), and 0.21 malpractice RVUs. This makes it a moderately high-value procedure reflecting the complexity of congenital heart catheterization.

Who can bill CPT code 93596?

CPT 93596 can be billed by board-certified cardiologists with specialized training in congenital heart disease, including pediatric cardiologists, adult congenital cardiologists, and interventional cardiologists with congenital expertise. The physician must have hospital privileges for cardiac catheterization and be credentialed to perform invasive congenital procedures.

What documentation is required to bill CPT 93596?

Required documentation includes the indication with specific congenital diagnosis, separate arterial and venous access sites, hemodynamic measurements from all cardiac chambers accessed, oxygen saturation data, explicit statement that no transseptal passage occurred, fluoroscopy time, contrast volume, complete interpretation of findings, and physician signature. Missing any element increases audit and denial risk.