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I71 ICD-10-CM Code: Aortic aneurysm and dissection

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Official description

I71

Aortic aneurysm and dissection

ICD-10-CM diagnosis code · United States clinical modification

Where I71 sits

  1. 1

    Chapter 9

    Diseases of the circulatory system (I00-I99)

  2. 2

    Section

    Diseases of arteries, arterioles and capillaries (I70-I79)

  3. 3

    Category I71

    Aortic aneurysm and dissection

  4. 4

    Code I71

    Aortic aneurysm and dissection

Codes under I71

I71 is a non-billable category. Choose the child code that best matches the documented diagnosis.

I71.0Dissection of aortaI71.1Thoracic 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, rupturedI71.9Aortic aneurysm of unspecified site, without rupture

Notes for this code

Inclusion terms

No inclusion terms are listed for I71.

Code first

  • , if applicable:
  • syphilitic aortic aneurysm (A52.01)
  • traumatic aortic aneurysm (S25.09, S35.09)

Use additional code

No “use additional code” instruction is listed for I71.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for I71.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for I71.

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code I71 mean?

I71 is the FY 2027 U.S. ICD-10-CM code for “Aortic aneurysm and dissection.”

Is I71 a billable or specific ICD-10-CM code?

No. I71 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is I71 located in ICD-10-CM?

I71 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Diseases of arteries, arterioles and capillaries (I70-I79) (I70–I79), under category I71, Aortic aneurysm and dissection.

What coding notes are listed for I71?

No inclusion terms are listed for I71 in this reference record. Code-first instructions: , if applicable:; syphilitic aortic aneurysm (A52.01); traumatic aortic aneurysm (S25.09, S35.09). No Excludes1 note is listed. No Excludes2 note is listed.