Does G44.81 require prior authorization?

No, G44.81 does not require prior authorization (high confidence). Covered without prior authorization.

`G44.81`, Hypnic headache

ICD-10-CM

No Prior Auth Required

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 records must include history and physical notes, laboratory results, and documentation of signs and symptoms that warrant the head/neck diagnostic imaging.
Accurate HCPCS/CPT coding must be submitted to differentiate CT and MRI scans from other radiology services and to support coverage determinations.
Documentation and supporting information must be available to Medicare upon request.

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.
Coverage requires documentation supporting clinical indication such as history and physical exam findings, laboratory results, and signs or symptoms that justify the diagnostic test.
Coblation of soft tissue stenosis of the external auditory canal (EAC) (case series in children with congenital/acquired EAC occlusion showing patency and symptom resolution).
Cordotomy by Coblation (Coblator cordotomy) for treatment of bilateral vocal fold immobility (BVFI) to improve airway (multiple series including larger retrospective series reporting de-cannulation and improved Dyspnea Index/VHI outcomes).
Coblation (RF cold ablation) for recurrent laryngotracheal respiratory papillomatosis (small series reporting longer intervals between interventions vs CO2 laser).
Low-temperature RF Coblation for select early-stage glottic cancer (small series reporting feasibility, voice preservation, and no major complications in short follow-up).

AETNA-CPB-0475, Coblation

A56612, Billing and Coding: CT of the Head

A57204, Billing and Coding: MRI and CT Scans of the Head and Neck

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