I28 (Other diseases of pulmonary vessels) 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.
“pulmonary artery (I28.-)”
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 I28: “pulmonary artery (I28.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
| I28Other diseases of pulmonary vessels | 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 | Other diseases of pulmonary vessels is a non-billable ICD-10-CM category code (I28). | Dissection of artery of upper extremity is a billable ICD-10-CM diagnosis code (I77.76). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources