I77.79: Dissection of other specified artery
I77.79, dissection of other specified artery, is listed as a covered diagnosis in 7 Medicare billing and coding articles that apply to 21 HCPCS Level II codes, including C8900 (Magnetic resonance angiography with contrast, abdomen), C8901 (Magnetic resonance angiography without contrast, abdomen), C8902 (Magnetic resonance angiography without contrast followed…). The articles come from 5 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with I77.79 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| C8900 | Magnetic resonance angiography with contrast, abdomen | Special coverage instructions apply | — | 3 |
| C8901 | Magnetic resonance angiography without contrast, abdomen | Special coverage instructions apply | — | 3 |
| C8902 | Magnetic resonance angiography without contrast followed by with contrast, abdomen | Special coverage instructions apply | — | 3 |
| C8909 | Magnetic resonance angiography with contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 3 |
| C8910 | Magnetic resonance angiography without contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 3 |
| C8911 | Magnetic resonance angiography without contrast followed by with contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 3 |
| C8912 | Magnetic resonance angiography with contrast, lower extremity | Special coverage instructions apply | — | 3 |
| C8913 | Magnetic resonance angiography without contrast, lower extremity | Special coverage instructions apply | — | 3 |
| C8914 | Magnetic resonance angiography without contrast followed by with contrast, lower extremity | Special coverage instructions apply | — | 3 |
| C8918 | Magnetic resonance angiography with contrast, pelvis | Special coverage instructions apply | — | 3 |
| C8919 | Magnetic resonance angiography without contrast, pelvis | Special coverage instructions apply | — | 3 |
| C8920 | Magnetic resonance angiography without contrast followed by with contrast, pelvis | Special coverage instructions apply | — | 3 |
| G0278 | Iliac and/or femoral artery angiography, non-selective, bilateral or ipsilateral to catheter insertion, performed at the same time as cardiac catheterization and/or coronary angiography, includes positioning or placement of the catheter in the distal aorta or ipsilateral femoral or iliac artery, injection of dye, production of permanent images, and radiologic supervision and interpretation (list separately in addition to primary procedure) | Carrier judgment | — | 2 |
| G0269 | Placement of occlusive device into either a venous or arterial access site, post surgical or interventional procedure (e.g., angioseal plug, vascular plug) | Special coverage instructions apply | — | 2 |
| G0453 | Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) | Carrier judgment | — | 2 |
| C8931 | Magnetic resonance angiography with contrast, spinal canal and contents | Special coverage instructions apply | — | 2 |
| C8932 | Magnetic resonance angiography without contrast, spinal canal and contents | Special coverage instructions apply | — | 2 |
| C8933 | Magnetic resonance angiography without contrast followed by with contrast, spinal canal and contents | Special coverage instructions apply | — | 2 |
| C8934 | Magnetic resonance angiography with contrast, upper extremity | Special coverage instructions apply | — | 2 |
| C8935 | Magnetic resonance angiography without contrast, upper extremity | Special coverage instructions apply | — | 2 |
| C8936 | Magnetic resonance angiography without contrast followed by with contrast, upper extremity | Special coverage instructions apply | — | 2 |
Medicare policy articles listing I77.79
- A57604: Billing and Coding: Intraoperative Neurophysiological Testing (WPS Insurance Corporation (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34623, L35003
- A56500: Billing and Coding: Cardiac Catheterization and Coronary Angiography (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L33557, L33959
- A52850: Billing and Coding: Cardiac Catheterization and Coronary Angiography (Wellpoint Federal (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L33557, L33959
- A56722: Billing and Coding: Intraoperative Neurophysiological Testing (Novitas Solutions, Inc. (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34623, L35003
- A56805: Billing and Coding: Magnetic Resonance Angiography (MRA) (Novitas Solutions, Inc. (MAC - Part A, MAC - Part B); 12 Level II codes). LCD with the same title: L33633, L34372, L34865
- A56747: Billing and Coding: Magnetic Resonance Angiography (MRA) (Wellpoint Federal (MAC - Part A, MAC - Part B); 18 Level II codes). LCD with the same title: L33633, L34372, L34865
- A56775: Billing and Coding: Magnetic Resonance Angiography (Palmetto GBA (MAC - Part A, MAC - Part B); 18 Level II codes). LCD with the same title: L34424
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Other I77 diagnoses (Other disorders of arteries and arterioles)
- I77.71 — Dissection of carotid artery
- I77.72 — Dissection of iliac artery
- I77.73 — Dissection of renal artery
- I77.74 — Dissection of vertebral artery
- I77.75 — Dissection of other precerebral arteries
- I77.76 — Dissection of artery of upper extremity
- I77.77 — Dissection of artery of lower extremity
- I77.0 — Arteriovenous fistula, acquired
- I77.1 — Stricture of artery
- I77.2 — Rupture of artery
- I77.3 — Arterial fibromuscular dysplasia
- I77.4 — Celiac artery compression syndrome
- I77.5 — Necrosis of artery
- I77.6 — Arteritis, unspecified
- I77.810 — Thoracic aortic ectasia
- I77.811 — Abdominal aortic ectasia
- I77.812 — Thoracoabdominal aortic ectasia
- I77.82 — Antineutrophilic cytoplasmic antibody [ANCA] vasculitis
- I77.89 — Other specified disorders of arteries and arterioles
Frequently asked questions
Does Medicare cover I77.79 (Dissection of other specified artery)?
Medicare covers items and services, not diagnoses. 7 Medicare billing and coding articles list I77.79 as a covered diagnosis for 21 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 I77.79?
The Level II codes from the policies most specific to this diagnosis are C8900 (Magnetic resonance angiography with contrast, abdomen, 3 articles); C8901 (Magnetic resonance angiography without contrast, abdomen, 3 articles); C8902 (Magnetic resonance angiography without contrast followed…, 3 articles); C8909 (Magnetic resonance angiography with contrast, chest…, 3 articles); C8910 (Magnetic resonance angiography without contrast, chest…, 3 articles). Code choice depends on the item supplied; check each code's descriptor.
Which Medicare policy articles list I77.79?
A57604 (Billing and Coding: Intraoperative Neurophysiological Testing); A56500 (Billing and Coding: Cardiac Catheterization and Coronary Angiography); A52850 (Billing and Coding: Cardiac Catheterization and Coronary Angiography), and 4 more articles.
What is ICD-10-CM code I77.79?
I77.79 is the ICD-10-CM code for dissection of other specified artery, in category I77 (Other disorders of arteries and arterioles), chapter 9: Diseases of the circulatory system.
Next steps
- Run a reimbursement report for a device billed under C8900
- Watch C8900 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for C8900
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 9: Diseases of the circulatory system · All diagnoses · HCPCS lookup