G04.00 — Acute disseminated encephalitis and encephalomyelitis, unspecified
ICD-10-CM
Prior Authorization
No Prior Auth Required
Code is covered without prior authorization (high confidence)
Documentation Required
- 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.
Key Coverage Criteria
- Ambulatory continuous EEG is covered only if a prior routine “resting” EEG was performed before the ambulatory EEG.
- Routine EEGs covered under this policy are those described by CPT codes 95812, 95813, 95816, 95819, or 95822.
- A routine EEG is defined as a recording of less than a 24-hour continuous duration.
- Visual field testing is covered when billed to the Part A or Part B MAC with a valid ICD-10-CM diagnosis code that best describes the patient’s condition and when the service is reasonable and necessary.
- For diagnostic visual field tests, report the test result on the claim if known; if the result is not known, report the signs or symptoms that prompted the test.
- If the service requires a referring/ordering physician, include the ordering/referring physician’s name and NPI on the claim.
11 Active Policies
L33574 — Visual Fields Testing
J06
A56551 — Billing and Coding: Visual Fields Testing
J06
A56771 — Billing and Coding: Special Electroencephalography
A56799 — Billing and Coding: Visual Fields Testing
A57204 — Billing and Coding: MRI and CT Scans of the Head and Neck
Related Codes
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