Does G04.90 require prior authorization?

No, G04.90 does not require prior authorization (high confidence). Covered without prior authorization.

`G04.90`, Encephalitis and encephalomyelitis, unspecified

ICD-10-CM

No Prior Auth Required

Covered without prior authorization (high confidence)

The patient's medical record must contain documentation that fully supports the medical necessity for the visual fields testing in accordance with the applicable LCD.
Documentation should include relevant medical history, a physical examination, and results of pertinent diagnostic tests or procedures supporting the need for visual fields testing.
The diagnosis code(s) reported on the claim must best describe the patient's condition for which the visual fields testing was performed.
Refer to NCCI and OPPS requirements prior to billing Medicare to ensure coding compliance and to determine any bundling or packaging edits.

Automated nerve conduction testing using the NC-stat (CPT 95905) is allowed only when there is a high pre-test or prior probability of carpal tunnel syndrome and the claim uses diagnosis code G56.01 or G56.02; allowed one service per arm.
If authorized by state law, physical therapists (PTs) are allowed to perform the technical and professional components of nerve conduction studies represented by CPT codes 95907-95913 consistent with a 7A supervision designation (effective 01/01/2013).
If authorized by state law, the technical component of neuromuscular junction testing CPT 95937 (TC) with supervision designation 7A is allowable for PTs consistent with the 7A description (effective 01/01/2013).
Needle electromyography CPT codes 95860-95872 and 95885-95887 have a 6A designation for the technical portion; PTs who are ABPTS-certified as qualified electrophysiologic clinical specialists and are authorized by state law may perform the technical and professional components according to the 6A description.
Electrodiagnostic nerve conduction studies and electromyography that provide real-time response parameters (amplitude, latency, configuration, conduction velocity) are acceptable for Medicare payment and should be used for provider interpretation.
Compounded medications for use in implantable infusion pumps may be covered by Medicare when their use meets all other criteria for services provided incident to a physician's service.

CGS-J15-L34056, Urodynamics

J15

CGS-J15-L34394, Visual Fields Testing

J15

CGS-J15-L39038, MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

J15

CGS-J18-L34056, Urodynamics

J18

CGS-J18-L34394

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