The National Institute for Health and Clinical Excellence (NICE) has issued full guidance to the NHS in England, Wales, Scotland and Northern Ireland on External aortic root support in Marfan syndrome.
K33.8 Other specified operations on aortic root
Y02.8 Other specified placement of prosthesis in organ NOC
L25.8 Other specified other open operations on aorta
Y02.8 Other specified placement of prosthesis into organ NOC
Z34.1 Ascending aorta
The NHS Classifications Service of the Health and Social Care Information Centre is the central definitive source for clinical coding guidance and determines the coding standards associated with the classifications (OPCS-4 and ICD-10) to be used across the NHS. The NHS Classifications Service and NICE work collaboratively to ensure the most appropriate classification codes are provided. http://systems.hscic.gov.uk/data/clinicalcoding