Myocardial Perfusion Imaging (Exercise and Pharmacologic Nuclear Stress Tests) — Clinical Review Criteria
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Clinical review criteria governing medical necessity review and preauthorization guidance for myocardial perfusion imaging (exercise and pharmacologic nuclear stress tests) for Kaiser Foundation Health Plan of Washington members and providers.
Initiated medical necessity review of MPI for Medicare Advantage members to align with 2024 CMS final rule, effective February 1, 2024.
Updated applicable CPT codes and coding guidance for myocardial perfusion imaging.
Updated hybrid criteria to improve performance of the MPI 2024 criteria.
Coverage and Medical Necessity Criteria
Medicare and Non-Medicare Medical Necessity Determination
MPI is considered medically necessary when criteria in the applicable policy statements or referenced MCG guidelines are met.
Reference local coverage determinations/articles for Medicare reviews.
Access to MCG criteria via provider portal; proprietary MCG content not reproduced here.
Pharmacologic vasodilator stress agents adenosine and dipyridamole are contraindicated in patients with severe reactive airway disease (for example, asthma or chronic obstructive pulmonary disease) because they may provoke bronchospasm; in these patients, consider substitution with regadenoson or dobutamine. This contraindication applies specifically to pharmacologic myocardial perfusion stress testing when vasodilators would otherwise be used.
When CPT codes for myocardial perfusion imaging (for example, 78451–78454) are submitted, medical necessity is not met if the services do not satisfy the applicable policy criteria or referenced MCG guideline criteria. Claims for these codes that lack documentation or clinical justification meeting the policy standards are subject to denial for lack of medical necessity.
Applicable Codes
| 78451 | Myocardial perfusion imaging; tomographic (SPECT) (including attenuation correction, qualitative or quantitative wall motion, ejection fraction by first pass or gated technique, additional |
| 78452 | Myocardial perfusion imaging; tomographic (SPECT) (including attenuation correction, qualitative or quantitative wall motion, ejection fraction by first pass or gated technique, additional quantification, when performed); multiple studies, at rest and/or stress (exercise or pharmacologic). |
| 78453 | Myocardial perfusion imaging, planar (including qualitative or quantitative wall motion, ejection fraction by first pass or technique, additional quantification, when performed); single study, at rest or stress (exercise or pharmacologic) gated. |
| 78454 | Myocardial perfusion imaging; planar (including qualitative or quantitative wall motion, ejection fraction by first pass or technique, additional quantification, when performed); multiple studies, at rest and/or stress (exercise or pharmacologic) and/or redistribution and/or rest reinjection gated. |
Provider Actions, Prior Authorization, and Documentation
Obtain prior authorization / medical necessity review for MPI CPT codes
Medical necessity review (prior authorization) is required for the listed myocardial perfusion imaging CPT codes (78451, 78452, 78453, 78454) when applicable; Medicare Advantage members are subject to initiated medical necessity review effective February 1, 2024. To verify authorization requirements for a specific code by plan type, use the Pre-authorization Code Check.
Step therapy: none specified; use MCG for non‑Medicare
No step therapy program is specified in this policy. For non‑Medicare members, Kaiser Permanente uses MCG Myocardial Perfusion Imaging guidelines for exercise (KP-0078) and pharmacologic (KP-0079) MPI to determine medical necessity.
- No insurer-directed step edits listed in this policy
- Non‑Medicare determinations follow MCG criteria (access via provider portal)
Provide last 6 months of clinical notes
Include the last 6 months of clinical notes from the requesting provider and/or specialist with the request to support medical necessity.
- Submit recent clinic notes documenting symptoms, prior testing, and rationale for MPI
- Attach specialist consult notes when applicable
Coding-based denial risk for MPI CPTs
Claims for myocardial perfusion imaging may be denied if the submitted CPT codes (78451–78454) do not meet the applicable policy or MCG medical necessity criteria.
- Ensure documentation and clinical indications meet the policy/MCG criteria before billing these CPT codes
Document submission missing may trigger denial
Failure to provide required documentation — for example, the last 6 months of clinical notes — may result in denial of medical necessity for the requested MPI service.
- Include requested notes with prior authorization submission to avoid delays or denials
Background
Myocardial perfusion imaging (MPI), commonly performed as exercise or pharmacologic stress SPECT, uses intravenous radiotracers (eg, thallium, sestamibi, tetrofosmin) taken up by myocardial cells and imaged with a gamma camera to reflect regional blood perfusion. Stress is produced by exercise or by pharmacologic agents (vasodilators such as adenosine, dipyridamole, regadenoson, or an adrenergic agent such as dobutamine) to unmask perfusion defects that may indicate ischemia. When synchronized with the ECG (eg, gated SPECT), MPI also provides assessment of ventricular function, including ejection fraction. The policy lists applicable CPT codes for these procedures (eg, 78451–78454) and applies medical necessity criteria for Medicare and non‑Medicare members as described in the policy and referenced MCG guidance.
Definitions
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