Does G43.A0 require prior authorization?

No, G43.A0 does not require prior authorization (high confidence). Covered without prior authorization.

`G43.A0`, Cyclical vomiting, in migraine, not intractable

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.
When the service is performed in a hospital inpatient or outpatient setting, use modifier -26 to indicate the professional component.
Billing and coding must adhere to the coverage indications, limitations, and medical necessity criteria described in the associated LCD L34615 Visual Fields; follow that LCD for clinical eligibility and documentation requirements.
Prior to billing Medicare, verify applicable code combinations and correct coding guidelines with the CCI (Correct Coding Initiative).

Taped and un-taped visual field testing count as one unit of service for MUE (medically unlikely edits) purposes.
Global visual field services (technical plus professional) are payable under Medicare Part B when billed in place of service: Office (11), Nursing Facility (32), and Independent Clinic (49).
The technical component of visual field testing is payable under Medicare Part B when billed in place of service: Office (11), Nursing Facility (32), Independent Clinic (49), Federally Qualified Health Center (50), and Rural Health Clinic (72).
The professional component of visual field testing is payable under Medicare Part B when billed in place of service: Office (11), Off-campus Outpatient Hospital (19), Inpatient Hospital (21), On-campus Outpatient Hospital (22), Emergency Room (23), Skilled Nursing Facility (31), Nursing Facility (32), Independent Clinic (49), and Comprehensive Outpatient Rehabilitation Facility (62).
Visual field examinations are covered when reasonable and necessary as defined by Local Coverage Determination (LCD) L33766.
Visual field testing is medically necessary after a significant eye injury when field loss is suspected or needs evaluation.

CGS-J15-L34394, Visual Fields Testing

J15

CGS-J15-L39856, Botulinum Toxin Injections

J15

CGS-J15-L39857, Botulinum Toxin Injections

J15

CGS-J18-L34394, Visual Fields Testing

J18

CGS-J18-L39856, Botulinum Toxin Injections

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