I71.0 (Dissection of aorta) compared with I77.76 (Dissection of artery of upper extremity), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Distinct conditions — both may be reported.
“dissection of aorta (I71.0-)”
An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.
Source: CMS ICD-10-CM tabular instructional notes
Yes, when both are documented. I77.76 carries an Excludes2 note covering I71.0: “dissection of aorta (I71.0-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
| I71.0Dissection of aorta | I77.76Dissection of artery of upper extremity | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Dissection of aorta is a non-billable ICD-10-CM category code (I71.0). | Dissection of artery of upper extremity is a billable ICD-10-CM diagnosis code (I77.76). |
| Code first | , if applicable: syphilitic aortic aneurysm (A52.01) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources