C8931 HCPCS code: Magnetic resonance angiography with contrast, spinal canal and contents

C8931 is the HCPCS Level II code for magnetic resonance angiography with contrast, spinal canal and contents. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 1 per day on outpatient hospital claims.

Code details

NCCI unit limits (MUE)

Medicare policy articles for this code

• A56747: Billing and Coding: Magnetic Resonance Angiography (MRA) (Wellpoint Federal (MAC - Part A, MAC - Part B))
• A56775: Billing and Coding: Magnetic Resonance Angiography (Palmetto GBA (MAC - Part A, MAC - Part B))
• A56775: Billing and Coding: Magnetic Resonance Angiography (Palmetto GBA (MAC - Part A, MAC - Part B))

Covered diagnoses (1,864 ICD-10-CM codes)

The diagnoses most often listed as covered in the policy articles above:

Showing 10 of 1,864. The full list, non-covered diagnoses and CSV export are in Caduvo.

What changed for C8931

• 2010-10-01: C8931 added to HCPCS Level II
• Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01

Frequently asked questions

What is HCPCS code C8931?

C8931 is the HCPCS Level II code for magnetic resonance angiography with contrast, spinal canal and contents. Short descriptor: "Mra, w/dye, spinal canal".

Does Medicare cover C8931?

Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.

Which diagnoses support coverage for C8931?

Medicare policy articles that cite C8931 list 1,864 covered ICD-10-CM diagnosis codes across 3 articles. The most cited include C70.0 (Malignant neoplasm of cerebral meninges), C71.0 (Malignant neoplasm of cerebrum, except lobes and ventricles), C71.1 (Malignant neoplasm of frontal lobe). A listed diagnosis is necessary but not sufficient; the policy's other criteria still apply.

How many units of C8931 can be billed per day?

1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).

Related C89 codes

• C8900 — Magnetic resonance angiography with contrast, abdomen
• C8901 — Magnetic resonance angiography without contrast, abdomen
• C8902 — Magnetic resonance angiography without contrast followed by with contrast, abdomen
• C8903 — Magnetic resonance imaging with contrast, breast; unilateral
• C8904 — Magnetic resonance imaging without contrast, breast; unilateral
• C8905 — Magnetic resonance imaging without contrast followed by with contrast, breast; unilateral
• C8906 — Magnetic resonance imaging with contrast, breast; bilateral
• C8907 — Magnetic resonance imaging without contrast, breast; bilateral
• C8908 — Magnetic resonance imaging without contrast followed by with contrast, breast; bilateral
• C8909 — Magnetic resonance angiography with contrast, chest (excluding myocardium)
• C8910 — Magnetic resonance angiography without contrast, chest (excluding myocardium)
• C8911 — Magnetic resonance angiography without contrast followed by with contrast, chest (excluding myocardium)

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Next steps

• Run a reimbursement report for a device billed under C8931
• Watch C8931 for fee, coverage and descriptor changes
• Build a full Medicare revenue model for C8931

Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.

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