I71.20: Thoracic aortic aneurysm, without rupture, unspecified
I71.20, thoracic aortic aneurysm, without rupture, unspecified, is listed as a covered diagnosis in 7 Medicare billing and coding articles that apply to 40 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 I71.20 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 | — | 2 |
| C8901 | Magnetic resonance angiography without contrast, abdomen | Special coverage instructions apply | — | 2 |
| C8902 | Magnetic resonance angiography without contrast followed by with contrast, abdomen | Special coverage instructions apply | — | 2 |
| C8909 | Magnetic resonance angiography with contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 2 |
| C8910 | Magnetic resonance angiography without contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 2 |
| C8911 | Magnetic resonance angiography without contrast followed by with contrast, chest (excluding myocardium) | Special coverage instructions apply | — | 2 |
| C8912 | Magnetic resonance angiography with contrast, lower extremity | Special coverage instructions apply | — | 2 |
| C8913 | Magnetic resonance angiography without contrast, lower extremity | Special coverage instructions apply | — | 2 |
| C8914 | Magnetic resonance angiography without contrast followed by with contrast, lower extremity | Special coverage instructions apply | — | 2 |
| C8918 | Magnetic resonance angiography with contrast, pelvis | Special coverage instructions apply | — | 2 |
| C8919 | Magnetic resonance angiography without contrast, pelvis | Special coverage instructions apply | — | 2 |
| C8920 | Magnetic resonance angiography without contrast followed by with contrast, pelvis | Special coverage instructions apply | — | 2 |
| J0461 | Injection, atropine sulfate, 0.01 mg | Special coverage instructions apply | — | 2 |
| J0153 | Injection, adenosine, 1 mg (not to be used to report any adenosine phosphate compounds) | Special coverage instructions apply | — | 2 |
| J1250 | Injection, dobutamine hydrochloride, per 250 mg | Special coverage instructions apply | — | 2 |
| J0280 | Injection, aminophyllin, up to 250 mg | Special coverage instructions apply | — | 2 |
| J1245 | Injection, dipyridamole, per 10 mg | Special coverage instructions apply | — | 2 |
| A9700 | Supply of injectable contrast material for use in echocardiography, per study | 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 | — | 1 |
| C8925 | Transesophageal echocardiography (tee) with contrast, or without contrast followed by with contrast, real time with image documentation (2d) (with or without m-mode recording); including probe placement, image acquisition, interpretation and report | Special coverage instructions apply | — | 1 |
| C8926 | Transesophageal echocardiography (tee) with contrast, or without contrast followed by with contrast, for congenital cardiac anomalies; including probe placement, image acquisition, interpretation and report | Special coverage instructions apply | — | 1 |
| C8927 | Transesophageal echocardiography (tee) with contrast, or without contrast followed by with contrast, for monitoring purposes, including probe placement, real time 2-dimensional image acquisition and interpretation leading to ongoing (continuous) assessment of (dynamically changing) cardiac pumping function and to therapeutic measures on an immediate time basis | Special coverage instructions apply | — | 1 |
| C8931 | Magnetic resonance angiography with contrast, spinal canal and contents | Special coverage instructions apply | — | 1 |
| C8932 | Magnetic resonance angiography without contrast, spinal canal and contents | Special coverage instructions apply | — | 1 |
| C8933 | Magnetic resonance angiography without contrast followed by with contrast, spinal canal and contents | Special coverage instructions apply | — | 1 |
15 more codes are listed. See every code with payment by region in Caduvo.
Medicare policy articles listing I71.20
- 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
- A52868: Billing and Coding: Transesophageal Echocardiography (TEE) (Wellpoint Federal (MAC - Part A, MAC - Part B); 3 Level II codes). LCD with the same title: L33579, L34337, L35016
- 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
- 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
- A57056: Billing and Coding: Aortography and Peripheral Angiography (First Coast Service Options, Inc. (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L36767
- A56781: Billing and Coding: Transthoracic Echocardiography (TTE) (Wellpoint Federal (MAC - Part A, MAC - Part B); 17 Level II codes). LCD with the same title: L33577, L34338
- A56625: Billing and Coding: Echocardiography (Palmetto GBA (MAC - Part A, MAC - Part B); 6 Level II codes). LCD with the same title: L37379
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 I71 diagnoses (Aortic aneurysm and dissection)
- I71.21 — Aneurysm of the ascending aorta, without rupture
- I71.22 — Aneurysm of the aortic arch, without rupture
- I71.23 — Aneurysm of the descending thoracic aorta, without rupture
- I71.00 — Dissection of unspecified site of aorta
- 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
- I71.02 — Dissection of abdominal aorta
- I71.03 — Dissection of thoracoabdominal aorta
- I71.10 — Thoracic aortic aneurysm, ruptured, unspecified
- I71.11 — Aneurysm of the ascending aorta, ruptured
- I71.12 — Aneurysm of the aortic arch, ruptured
- I71.13 — Aneurysm of the descending thoracic aorta, ruptured
- I71.30 — Abdominal aortic aneurysm, ruptured, unspecified
- I71.31 — Pararenal abdominal aortic aneurysm, ruptured
- I71.32 — Juxtarenal abdominal aortic aneurysm, ruptured
- I71.33 — Infrarenal abdominal aortic aneurysm, ruptured
- I71.40 — Abdominal aortic aneurysm, without rupture, unspecified
- I71.41 — Pararenal abdominal aortic aneurysm, without rupture
- I71.42 — Juxtarenal abdominal aortic aneurysm, without rupture
- I71.43 — Infrarenal abdominal aortic aneurysm, without rupture
- I71.50 — Thoracoabdominal aortic aneurysm, ruptured, unspecified
- I71.51 — Supraceliac aneurysm of the thoracoabdominal aorta, ruptured
- I71.52 — Paravisceral aneurysm of the thoracoabdominal aorta, ruptured
- I71.60 — Thoracoabdominal aortic aneurysm, without rupture, unspecified
- I71.61 — Supraceliac aneurysm of the thoracoabdominal aorta, without rupture
- I71.62 — Paravisceral aneurysm of the thoracoabdominal aorta, without rupture
- I71.8 — Aortic aneurysm of unspecified site, ruptured
- I71.9 — Aortic aneurysm of unspecified site, without rupture
Frequently asked questions
Does Medicare cover I71.20 (Thoracic aortic aneurysm, without rupture, unspecified)?
Medicare covers items and services, not diagnoses. 7 Medicare billing and coding articles list I71.20 as a covered diagnosis for 40 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 I71.20?
The Level II codes from the policies most specific to this diagnosis are C8900 (Magnetic resonance angiography with contrast, abdomen, 2 articles); C8901 (Magnetic resonance angiography without contrast, abdomen, 2 articles); C8902 (Magnetic resonance angiography without contrast followed…, 2 articles); C8909 (Magnetic resonance angiography with contrast, chest…, 2 articles); C8910 (Magnetic resonance angiography without contrast, chest…, 2 articles). Code choice depends on the item supplied; check each code's descriptor.
Which Medicare policy articles list I71.20?
A57604 (Billing and Coding: Intraoperative Neurophysiological Testing); A52868 (Billing and Coding: Transesophageal Echocardiography (TEE)); A56805 (Billing and Coding: Magnetic Resonance Angiography (MRA)), and 4 more articles.
What is ICD-10-CM code I71.20?
I71.20 is the ICD-10-CM code for thoracic aortic aneurysm, without rupture, unspecified, in category I71 (Aortic aneurysm and dissection), 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