I71.01 ICD-10 Code: Dissection of thoracic aorta (2026)

I71.01 is the authoritative medical code for Dissection of thoracic aorta. This classification is used in medical billing and clinical recording to specify the clinical criteria for dissection of thoracic aorta (ICD-10-CM I71.01), ensuring healthcare documentation aligns with 2026 federal coding standards.

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Official Registry Overview & Definition

Dissection of thoracic aorta is a non-billable ICD-10-CM category code I71.01. A more specific billable subcode must be selected for claims submission. Code first: , if applicable:; syphilitic aortic aneurysm A52.01; traumatic aortic aneurysm (S25.09, S35.09).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for I71.01 in the official ICD-10-CM tabular list.

Code First

Underlying conditions that must be sequenced before this code.

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

Frequently Asked Questions (FAQ) & Clinical Guidance

Can I71.01 be billed directly?

No. I71.01 (Dissection of thoracic aorta) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Does I71.01 need to be sequenced after another code?

Yes. Code first: , if applicable:; syphilitic aortic aneurysm (A52.01); traumatic aortic aneurysm (S25.09, S35.09).

Codes in This Family (4)

Official ICD-10-CM classifications in the same code family as I71.01, with their registry titles.

I71.010 — Dissection of ascending aorta
I71.011 — Dissection of aortic arch
I71.012 — Dissection of descending thoracic aorta
I71.019 — Dissection of thoracic aorta, unspecified

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