ICD10
ICD-10 Code I71.0: Dissection of aorta
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents dissection of aorta in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I70-I79Diseases of arteries, arterioles and capillaries
category
I71Aortic aneurysm and dissection
currentI71
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
CardiologistGeneral Physician
Related codes
Sibling codes
I71.1Thoracic aortic aneurysm, rupturedI71.2Thoracic aortic aneurysm, without ruptureI71.3Abdominal aortic aneurysm, rupturedI71.4Abdominal aortic aneurysm, without ruptureI71.5Thoracoabdominal aortic aneurysm, rupturedI71.6Thoracoabdominal aortic aneurysm, without ruptureI71.8Aortic aneurysm of unspecified site, rupturedbillableI71.9Aortic aneurysm of unspecified site, without rupturebillable
Mapped diagnoses and classifications
SNOMED_CT 713030005high
Chronic dissection of thoracic aorta
Source: SNOMED International ICD-10 map
SNOMED_CT 425453009high
Chronic nontraumatic dissection of thoracic aorta
Source: SNOMED International ICD-10 map
SNOMED_CT 408666009high
Dissection of abdominal aorta
Source: SNOMED International ICD-10 map
SNOMED_CT 308546005high
Dissection of aorta
Source: SNOMED International ICD-10 map
SNOMED_CT 27631000146108high
Dissection of aortic arch
Source: SNOMED International ICD-10 map
SNOMED_CT 724442004high
Dissection of ascending aorta and aortic arch
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
I71.0
Replacement codes
I71.00 — Dissection of unspecified site of aortaI71.02 — Dissection of abdominal aortaI71.03 — Dissection of thoracoabdominal aorta
Common synonyms
Dissection of aorta
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.