Does T40.491A require prior authorization?

No, T40.491A does not require prior authorization (high confidence). Code is covered without prior authorization.

`T40.491A` — Poisoning by other synthetic narcotics, accidental (unintentional), initial encounter

ICD-10-CM

No Prior Auth Required

Code is covered without prior authorization (high confidence)

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.
Medical necessity for each test must be documented in the patient's medical record as required by LCD L35006.
All documentation must be maintained in the patient's medical record and made available to the contractor upon request; every page must be legible and include patient identification and dates of service.
Documentation must include the legible signature of the physician or non-physician practitioner responsible for and providing the care to the patient.

Urine drug testing (UDT) and drugs-of-abuse testing are covered when reasonable and necessary per LCD L35006 and ordered on an individual patient basis by the treating clinician with medical-record documentation of medical necessity.
Patients with a documented diagnosis consistent with substance use disorder (SUD) may qualify for an exception to the standard presumptive UDT annual limits.
Drug testing services are covered when they meet the medical necessity and coverage indications specified in LCD L36029.
Medicare Part B will pay for drug screening services when furnished in allowed places of service: office (11), urgent care (20), independent clinic (49), FQHC freestanding (50), RHC freestanding (72), and independent laboratory (81).
Urine, blood, or oral fluid specimens may be used for drug testing, with urine preferred for broad screening of common drugs.
Medicare Part B will pay for drug screening services when all coverage criteria, limitations, and medical necessity requirements of LCD DL34645 are met.

A57472 — Billing and Coding: Allergy Immunotherapy

J05

A56915 — Billing and Coding: Urine Drug Testing

J05

A57473 — Billing and Coding: Allergy Testing

J05

L34645 — Urine Drug Testing

J05

L36408 — Allergen Immunotherapy (AIT) with Subcutaneous Immunotherapy (SCIT)

Ask Verity about documentation requirements, denial risks, or coverage in your state.