T46.4X3A — Poisoning by angiotensin-converting-enzyme inhibitors, assault, initial encounter
ICD-10-CM
Prior Authorization
No Prior Auth Required
Code is covered without prior authorization (high confidence)
Documentation Required
- This article provides billing/coding guidelines that complement Local Coverage Determination L34417 for CT of the head; consult LCD L34417 for specific coverage, coding, and documentation requirements.
- Follow LCD L35434 for reasonable and necessary requirements and supporting medical documentation for oximetry services.
- Report overnight oximetry using CPT code 94762 on claims.
- The claim must include a valid ICD-10-CM diagnosis code that best describes the patient's condition for which the service was performed.
Key Coverage Criteria
- Echocardiograms performed as part of the CAMZYOS REMS program are covered when billed with modifier KX and all REMS program requirements are met for patients with NYHA Class II–III obstructive hypertrophic cardiomyopathy (I42.1).
- An ECG is covered when the result is relevant to the management, diagnosis, or treatment of the patient.
- A separate ECG on the same day as a cardiac stress test is payable only when it provides additional clinically necessary information beyond the stress test (e.g., to rule out acute myocardial infarction prior to performing the stress test).
- Rhythm ECGs are covered when used to evaluate signs or symptoms suggesting a cardiac rhythm disorder.
- Home-based ECG services (including additional payment above the base ECG amount for transportation) are covered when there is a documented medical need to perform the ECG in the patient's home, typically for homebound or bed-confined patients.
- A second professional component (PC) interpretation may be paid when a second physician’s substantially greater expertise is necessary and reasonable to clarify a questionable or confusing ECG finding and contributes substantially to diagnosis or treatment.
14 Active Policies
L36402 — Allergy Testing
J05
L40195 — Allergen Immunotherapy (AIT) with Subcutaneous Immunotherapy (SCIT)
J05
A57473 — Billing and Coding: Allergy Testing
J05
A57472 — Billing and Coding: Allergy Immunotherapy
J05
L36408 — Allergen Immunotherapy (AIT) with Subcutaneous Immunotherapy (SCIT)
Related Codes
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