Michael F. Mahoney
Chairman and Chief Executive Officer at Boston Scientific
Thanks, Lauren, and thank you to everyone for joining us today. 2023 results were excellent, and our global performance represented one of the strongest years in company history, exceeding our financial goals that we set for the year. This performance is fueled by innovation and clinical evidence generation, commercial execution, and the winning spirit of our global teams.
In fourth quarter '23, total company operational sales grew 15%. Our organic sales grew 14% versus fourth quarter '22, exceeding the high end of our guidance range of 8% to 10%. Full-year '23 operational sales growth of 13% versus 2022, while organic sales grew 12%, exceeding our guidance of approximately 11% for the full year. Importantly, six of our eight business units grew sales double-digit in the fourth quarter and double digits for the full year 2023. And all of our regions also grew double digits in the fourth quarter and double digits full year 2023. This performance is a testament to our category leadership strategy and our focus on innovation bolstered by commercial excellence.
Fourth quarter adjusted EPS at $0.55 grew 24% versus 2022, exceeding the high end of our guidance range of $0.49 to $0.52. Full-year adjusted EPS of $2.05, grew 20% [Phonetic] versus 2022, also exceeding the high end of our guidance range of $1.99 to $2.02. Q4 adjusted operating margin was 26.6% and full-year '23 was 26.3%, which is exciting because it exceeds pre-pandemic levels. We generated a full-year cash flow of $1.8 billion and adjusted free cash flow of $2.5 billion in line with our expectations.
Now for our 2024 outlook. We expect healthy procedure volumes to continue and our guidance to organic growth of 7% to 9% for the first quarter of '24, and 8% to 9% for the full year of 2024. Our Q1 '24 adjusted EPS estimate is $0.50 to $0.52. We expect our full-year adjusted EPS to be $2.23 to $2.27, representing growth of 9% to 11%. This guidance excludes the acquisition of Axonics, which is expected to close in the first half of '24.
Despite pressures on margins in '24 from FX headwinds, as well as investments in manufacturing capacity and selling expenses to fuel our exciting launches, we remain committed to improving operating income margins in 2024 and to our goal of improving adjusted operating margin by 150 basis points in '24 to '26. Now, Dan will provide more details on those financials for both 2023 and 2024.
I'll now provide additional highlights on '23 results along with comments on our outlook. Regionally on an operational basis, the US grew 11% for the fourth quarter of '22. Full year 2023 grew 10% with particular strength in our Watchman, EP, Endo and Uro business units. Europe, Middle East and Africa grew 12% on an operational basis versus Q4 '22 and 13% on a full-year basis. This above market growth is supported by new and ongoing product launches across the portfolio, price discipline and strong commercial execution.
We're excited about the year ahead with ongoing momentum across the region, particularly with our innovative EP portfolio and further opportunity in our growth in emerging markets within the EMEA region. Asia Pacific grew 17% operationally versus Q4 in '19 versus the full year 2022 with all major markets growing strong double digits. Japan had a strong year growing double digits for '22 with ongoing momentum from new products, most notably AGENT DCB, RESUME [Phonetic], POLAR FIT and WATCHMAN FLX.
And on a full-year basis, China grew approximately 20% versus 2022. This consistent growth is fueled by the diverse portfolio, focus on innovation and strong commercial execution. Looking ahead, we expect China to be an accretive mid-teens grower over our '24 to '26 LRP and to achieve over $1 billion in sales in '24, supported by new product launches, supply chain agility and sustained investments in our talents and capabilities. The Team Latin America grew 17% operationally versus both Q4 and full year '22, with seven of eight business units growing double digits on a full-year basis.
I'll now provide some additional commentary on our BUs. Urology had an excellent quarter, 10% organic growth versus Q4 '22, and on a full-year basis grew 11% organically. Full year growth was led by our Stone Management and Prosthetic Urology globally. And in 2023, we relaunched our direct-to-patient campaign driving therapy awareness for erectile dysfunction and supporting double-digit growth within our Prosthetic Urology franchise.
We're excited about the opportunities ahead in Urology, including our recently announced agreement to acquire Axonics, a medical technology company that offers innovative devices, treat urinary and bowel dysfunction. We look forward to bringing these complementary portfolios together and expanding access to differentiated technologies for physicians and patients.
Endoscopy sales were also excellent in the quarter, growing 12% operationally and 11% organically versus fourth quarter of '22, and a full-year basis, growing 12% operationally and 11% organically. Within the quarter, strong results were led by AXIOS and single-use scopes, both growing double digits and a full-year basis all regions grew double digits, supported by the broad and deep portfolio, new product innovation and focus on commercial excellence.
Neuromodulation sales grew 7% operationally and 3% organically versus fourth quarter '22, and a full-year basis, 7% operationally and 5% organically versus '22. Our Brain franchise grew double digits both in the quarter and on a full-year basis, driven by the Vercise Genus portfolio and our innovative Image Guided Programming, which is designed to improve the precision and efficiency of the deep brain stimulation procedure.
In the fourth quarter, on an organic basis, our Pain franchise was flat year-over-year, which was in line with our expectations. We expect our performance to improve in 2024 with the recent launch of our US WaveWriter Alpha DPN indication and the strong and real-world data on FAST recently presented at NANS. Furthermore, with the completion of our Relievant Medsystems acquisition in the fourth quarter, we're excited about our ability to offer an expanded Pain portfolio that supports a comprehensive treatment algorithm now included a novel Intracept system for the treatment of chronic low back pain.
Peripheral Interventions sales were excellent, also growing 12% operationally and 10% organically versus Q4 and a full-year basis, growing 13% operationally and 11% organically versus '22. Arterial growth was led by the performance of our Drug-Eluting portfolio both in Q4 and in a full year. This market remains underpenetrated with more than half the procedure is still being used with bare-metal devices, underscoring the importance of our ongoing commitment to innovation and clinical evidence.
In Venous, Q4 [Indecipherable] growth was led by Varithena, our market-leading varicose vein technology. Additionally, in fourth quarter, EKOS growth was supported by REAL-PE, the largest real-world and near real-time dataset evaluating advanced therapies for pulmonary embolism patients.
Our Interventional Oncology franchise performed extremely well in the fourth quarter and in 2023, growing low double digits with strength across our portfolio of robust embolization technologies and cancer therapies.
We continue to look to expand our clinical evidence and are pleased to have commenced enrollment in the ROWAN trial, which will assess the safety and efficacy of using TheraSphere in combination with immunotherapy to treat HCC, the most common type of primary liver cancer.
Cardiology delivered tremendous quarter -- delivered tremendous fourth quarter and year with both operational and organic sales growing 14% versus fourth quarter and for the full year 2022. Within Cardiology, Interventional Cardiology Therapies sales grew 10% for the full year and -- for the fourth quarter and full year. On a full-year basis, the Coronary Therapies franchise growth was driven by strong performance in our international regions and our Imaging franchise globally.
AGENT Drug-Coated Balloon continues to perform very well in Japan. We now expect approval of AGENT in the US in the first half of 2024. AGENT DCB will be the first coronary drug-eluting balloon in the US indicated for in-stent restenosis, providing physicians and their patients a solution for this unmet clinical need.
Our Structural Heart Valves franchise grew double digits in both fourth quarter and in a full year basis, led by the performance of ACURATE Neo2 in Europe. And we now have treated more than 70,000 patients to date with our ACURATE technology globally. As we look ahead, we anticipate approval of ACURATE Prime in Europe in 2025. However, after reviewing a planned interim analysis of the US ACURATE IDE data, we will now wait for the full one-year data from the RCT cohort of 1,500 patients to determine our regulatory strategy. Therefore, we no longer anticipate the approval of ACURATE Prime in the US in 2024. Additionally in alignment with the FDA, we are suspending enrollment in the single-arm Continued Access study, while continuing to enroll in the randomized extended durability cohorts. We expect to have more information in the second half of 2024, following the full data review.
WATCHMAN sales grew 23% organically versus fourth quarter '22 and 25% on a full year basis. Q4 finished with record sales and strong utilization in all major markets. We have now treated over 400,000 patients globally with the WATCHMAN technology. US Q4 growth of 23% was supported by the breadth of the portfolio and the initial launch of WATCHMAN FLX Pro, which we expect to move into full launch in the first quarter. We continue to expand the breadth of clinical evidence supporting this technology and are pleased with the pace of enrollment within our post-market HEAL-LAA trial, including our newly added cohort, which studied in WATCHMAN FLX Pro an underrepresented patient population. We also look forward to initiating our Monotherapy trial -- SIMPLIFY trial later this year, which will study WATCHMAN FLX Pro with the simplified post-implant drug regimen.
Cardiac Rhythm Management sales grew 5% organically versus Q4 '22, and on a full-year basis grew 6% organically versus '22. On a full-year basis, our Diagnostics franchise grew double digits outpacing market growth, driven by broad portfolio and ongoing investments in innovation.
And Core CRM in both fourth quarter and a full year basis, our high-voltage business grew low-single digits and our low voltage business grew mid-single-digits. 2023 performance was driven by our differentiated high-voltage portfolio and shock polarity options. As we look ahead, we expect our Core CRM growth to be in line with the market performance in '24.
For Electrophysiology, sales grew 43%, both operationally and organically versus fourth quarter '22, and on a full-year basis grew 37% operationally and 33% organically versus '22. US fourth quarter sales grew 40% organically, driven by our POLARx launch and ongoing momentum with our Access Solutions portfolio.
Our international EP growth accelerated in the fourth quarter, growing 46% organically, fueled by improved FARAPULSE console supply. We now treated over 40,000 patients globally with the FARAPULSE technology to date. And with the news this morning that we received FDA approval for FARAPULSE, we are thrilled to enter the US market immediately. We continue to invest in ClinicalEVIDENCE to study new indications and support access to our FARAPULSE technology. Late last year, we initiated the AVANT GUARD trial to evaluate the safety and efficacy of the system. It's a first-line treatment for persistent AF compared to antiarrhythmic drug therapy.
Additionally, real-world data was presented at AHA for more than 17,000 patients treated with the FARAPULSE from the MANIFEST 17K registry, which reinforced the real-world safety profile of the FARAPULSE platform with no reports of permanent phrenic nerve palsy or pulmonary vein stenosis or esophageal injury and an overall major adverse rate event rate of less than 1%. We're excited to bring this innovative technology to more markets and expect approval of FARAPULSE in Japan -- China and Japan, likely in the second half of this year.
In closing, I'm very proud of our global team what we were able to accomplish in '23, resulting in a full-year organic sales growth of 12% and adjusted EPS growth of 20%. We're excited about the year ahead and remain focused on our talent, sustaining a culture that's motivated to drive differentiated performance and achieve our long-range plan goals. Those goals as a reminder, our sales an average of 8% to 10% over the three-year period, while expanding adjusted operating margin by 150 basis points, including double-digit adjusted EPS growth, an improvement of our free cash flow conversion to approximately 70% in 2026.
With all of that, I'll pass it over to Dan to provide more details on the financials.