I71.23
Billable codeAneurysm of the descending thoracic aorta, without rupture
The ICD-10 code for aneurysm of the descending thoracic aorta, without rupture is I71.23.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- I71.20Thoracic aortic aneurysm, without rupture, unspecified
- I71.21Aneurysm of the ascending aorta, without rupture
- I71.22Aneurysm of the aortic arch, without rupture
- I71.23Aneurysm of the descending thoracic aorta, without rupture
Associated MS-DRGs
I71.23 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.