CPT CODERadiologyStatus A

CPT Code 75577Complete Billing & Coding Guide (2026)Quan&char c athrosclrtc plaq

Reviewed by AAPC-Certified Coders2026 Medicare Fee ScheduleCMS + AMA Sources
Medicare Payment
$1012
Non-facility · National avg
Facility
$1012
Total RVU
30.30
Global
XXX
Payment
$1012
non-facility
Work RVU
0.85
physician effort
Global Period
XXX
no post-op
Bundling Edits
0
none found
Last reviewed: May 2026Reviewed by the Go Medical Billing Editorial TeamAAPC-certified coders

About CPT 75577

CPT 75577 is a Current Procedural Terminology code in the Radiology category maintained by the American Medical Association. The CMS short descriptor reads "Quan&char c athrosclrtc plaq". For the full AMA long descriptor and clinical guidance, refer to the current CPT code manual.

Documentation specificity, correct ICD-10 linkage, and modifier accuracy determine whether 75577 pays cleanly or triggers a denial. Verify CMS National Physician Fee Schedule status, applicable Medicare LCDs, and any payer-specific medical policies before submission.

Pro Tip

Verify the current CMS National Physician Fee Schedule and any local Medicare Administrative Contractor LCDs before billing 75577. Commercial payer medical policies can impose additional bundling, prior authorization, or documentation requirements beyond national rules.

Code Properties

Global Period
XXX
Not applicable (E/M, diagnostic, etc.)
Status Indicator
A
Active. Payment under Medicare PFS.
Conversion Factor
$33.4009
CMS national rate
Effective Date
2026-04-01
per CMS publication

RVU Breakdown

Every CPT code’s Medicare payment is calculated from three Relative Value Unit components: physician work, practice expense, and malpractice. Together they multiply by the conversion factor to produce the payment amount.

RVU Composition
30.30 total RVU
29.40
Work RVU
0.85 · 3%
Physician time + skill
Practice Expense
29.40 · 97%
Office & equipment
Malpractice
0.05 · 0%
Liability insurance
Non-Facility
Private office · urgent care · ambulatory
Most billed
$1012.05
30.30 RVU × $33.4009 CF
Facility
Hospital · ASC · nursing home
$1012.05
30.30 RVU × $33.4009 CF

Payment = Total RVU × Conversion Factor ($33.4009) × Geographic Adjustment (GPCI). National averages shown. Actual payment varies by locality.

Medicare Payment by State

Medicare adjusts payment by locality based on GPCI (Geographic Practice Cost Index). Higher cost-of-living areas like California and New York pay more. Rural states pay less. Top 12 states shown.

CA
$1192
DC
$1189
WA
$1150
HI
$1146
NJ
$1137
MA
$1134
NY
$1128
AK
$1089
CT
$1089
CO
$1075
OR
$1064
MD
$1054

Showing top 12 of 53 states. Full locality data available in CMS PFS Locality file.

Applicable Modifiers

Modifiers commonly paired with 75577 based on its category. Apply only when the clinical circumstance warrants. Incorrect modifier use is a top audit target.

26
Professional component — physician interpretation/report only (no technical component)
When to use · When the physician only interprets/reads a diagnostic test performed by another entity (e.g., reading an echo performed at a hospital).
33
Preventive services — when the primary purpose is delivery of an evidence-based service per USPSTF A or B recommendation
When to use · Screening services (colonoscopy, mammography, etc.) to indicate the primary purpose is preventive. Waives cost-sharing under ACA.
76
Repeat procedure or service by same physician
When to use · When the same physician repeats the exact same procedure on the same day (e.g., repeat EKG after treatment, repeat X-ray after reduction).
77
Repeat procedure by another physician
When to use · When a different physician repeats the same procedure on the same day.
91
Repeat clinical diagnostic laboratory test on the same day for the same patient
When to use · When the same lab test is repeated on the same day for clinical reasons (not equipment malfunction).
GA
Waiver of liability statement issued as required by payer policy (ABN on file)
When to use · Medicare: when an Advance Beneficiary Notice (ABN) has been signed by the patient for services that may not be covered.
GY
Item or service statutorily excluded or does not meet the definition of any Medicare benefit
When to use · Service is never covered by Medicare (e.g., cosmetic procedures). May bill patient directly.
GZ
Item or service expected to be denied as not reasonable and necessary — no ABN on file
When to use · When a service is expected to be denied by Medicare and no ABN was obtained. Provider cannot bill the patient.
AR Recovery Note

Component split modifiers (26 professional, TC technical) are the most under-applied modifiers in diagnostic billing. Practices that bill global on services where they only provided the read silently invite refund requests. We split components correctly at submission.

Supporting ICD-10 Diagnoses

These diagnosis codes commonly support medical necessity for CPT 75577. Using the correct ICD-10 prevents CARC 50 denials. Payer rejects when the diagnosis doesn’t support the procedure.

1
CMS LCD: Billing and Coding: Artificial Intelligence Enabled CT Based Quantitative Coronary Topography (AI-QCT)/Coronary Plaque Analysis (AI-CPA)
CMS LCD
R93.1See ICD-10-CM tabular index
AR Recovery Note

Imaging CO-50 denials trace to medical-policy criteria mismatches. Cardiac MRI, cardiac CT, nuclear cardiology, and advanced imaging all face strict commercial payer policies. We pre-verify the indication against the payer's policy before submission, not after the denial.

Free 90-Day AR Recovery Audit

Find the revenue leakage in your 75577 claims.

Wrong modifier, missing documentation, bundling without justification, stale ICD-10 linkage: these are the silent revenue killers on Radiology claims. Our AAPC-certified team audits your last 90 days of 75577 claims, surfaces the recoverable dollars, and appeals them. Free, no obligation.

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FAQ

Everything about CPT 75577

What does CPT code 75577 cover?

CPT 75577 is a Current Procedural Terminology code in the Radiology category maintained by the American Medical Association. The CMS short descriptor reads "Quan&char c athrosclrtc plaq". For the full AMA long descriptor and clinical guidance, refer to the current CPT code manual.

What is the Medicare payment for CPT 75577?

The national average Medicare payment for CPT 75577 is approximately $1012.05 in a non-facility setting and $1012.05 in a facility setting. Actual payment varies by locality based on GPCI adjustments. Total RVU is 30.3 with a conversion factor of $33.4009.

What is the global period for CPT 75577?

CPT 75577 has no global period (indicator XXX). There are no post-operative day restrictions tied to this code. Refer to CMS National Physician Fee Schedule rules and any applicable NCCI edits when billing on the same date as other services.

CMS Medicare Physician Fee ScheduleNCCI Edits · Current QuarterAMA CPT Code Set

CPT codes and descriptions are copyright of the American Medical Association. RVU values reflect current CMS publications. Actual payment varies by locality. Commercial payer rates vary by contract.

Free 90-Day AR Recovery Audit

We audit your last 90 days of claims and surface the revenue leakage: wrong modifiers, missed bundling appeals, ICD-10 specificity gaps. AAPC-certified coders. 2.49% of collections. No setup fees.