Does R90.82 require prior authorization?

No, R90.82 does not require prior authorization (high confidence). Code is covered without prior authorization.

`R90.82` — White matter disease, unspecified

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.
Claims must meet the reasonable and necessary documentation requirements specified in LCD L35035; include clinical records demonstrating medical necessity per the LCD.
Follow the NCCI Coding Policy Manual (Chapters V and IX) for proper coding; retain documentation supporting compliance with NCCI edits.
When billing services that the LCD does not cover, use the appropriate Medicare modifier and document the basis for billing a non-covered service.

Coverage for thoracic aortography and carotid, vertebral, and subclavian angiography is determined by Local Coverage Determination L35035; services are covered when reasonable and necessary per that LCD.
No specific clinical indications are listed in this billing/coding guidance; coverage determinations for MRI of the head and neck follow Local Coverage Determination L34425.
Magnetic resonance angiography (MRA) is covered only when the service meets the reasonable and necessary coverage criteria specified in Local Coverage Determination L34865.
Bill HCPCS code G0278 for femoral or iliac angiography performed at the time of coronary angiography.
Aortography and peripheral angiography are covered when reasonable and necessary per Local Coverage Determination L36767 and when documentation supports the selected ICD-10-CM diagnosis and medical necessity.
CT or MRI scans of the head or neck are covered when the medical record documents the scan is reasonable and necessary for diagnostic evaluation.

L36767 — Aortography and peripheral angiography

J09

A57056 — Billing and Coding: Aortography and Peripheral Angiography

J09

L34865 — Magnetic Resonance Angiography (MRA)

J12

L35035 — Thoracic Aortography and Carotid, Vertebral, and Subclavian Angiography

J12

A56631

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