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ICD-10-CM · FY 2026 APRIL UPDATE

I71

Aortic aneurysm and dissection

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
I71.0Dissection of aortaCategory
I71.00Dissection of unspecified site of aortaBillable
I71.01Dissection of thoracic aortaCategory
I71.010Dissection of ascending aortaBillable
I71.011Dissection of aortic archBillable
I71.012Dissection of descending thoracic aortaBillable
I71.019Dissection of thoracic aorta, unspecifiedBillable
I71.02Dissection of abdominal aortaBillable
I71.03Dissection of thoracoabdominal aortaBillable
I71.1Thoracic aortic aneurysm, rupturedCategory
I71.10Thoracic aortic aneurysm, ruptured, unspecifiedBillable
I71.11Aneurysm of the ascending aorta, rupturedBillable
I71.12Aneurysm of the aortic arch, rupturedBillable
I71.13Aneurysm of the descending thoracic aorta, rupturedBillable
I71.2Thoracic aortic aneurysm, without ruptureCategory
I71.20Thoracic aortic aneurysm, without rupture, unspecifiedBillable
I71.21Aneurysm of the ascending aorta, without ruptureBillable
I71.22Aneurysm of the aortic arch, without ruptureBillable
I71.23Aneurysm of the descending thoracic aorta, without ruptureBillable
I71.3Abdominal aortic aneurysm, rupturedCategory
I71.30Abdominal aortic aneurysm, ruptured, unspecifiedBillable
I71.31Pararenal abdominal aortic aneurysm, rupturedBillable
I71.32Juxtarenal abdominal aortic aneurysm, rupturedBillable
I71.33Infrarenal abdominal aortic aneurysm, rupturedBillable
I71.4Abdominal aortic aneurysm, without ruptureCategory
I71.40Abdominal aortic aneurysm, without rupture, unspecifiedBillable
I71.41Pararenal abdominal aortic aneurysm, without ruptureBillable
I71.42Juxtarenal abdominal aortic aneurysm, without ruptureBillable
I71.43Infrarenal abdominal aortic aneurysm, without ruptureBillable
I71.5Thoracoabdominal aortic aneurysm, rupturedCategory

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.