Does H47.642 require prior authorization?

No, H47.642 does not require prior authorization (high confidence). Code is covered without prior authorization.

`H47.642` — Disorders of visual cortex in (due to) vascular disorders, left side of brain

ICD-10-CM

No Prior Auth Required

Code is 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.

Fundus photography is covered when medical necessity is documented in the medical record, including relevant history, exam, diagnostic test results, and retention of the photographs and an interpretation/report.
Extended ophthalmoscopy is covered when medical necessity is documented for each eye, including relevant history, physical exam, pertinent diagnostic results, and retinal drawings that meet the policy specifications.
Patients actively receiving intravitreal injections for exudative age-related macular degeneration (ICD H35.3210-H35.3213, H35.3220-H35.3223, H35.3230-H35.3233) may require and are covered for extended ophthalmoscopy.
Conditions including tuberculosis of eye (A18.53, A18.54), diabetes mellitus with ophthalmic complications (E08.311-E08.359, E09.311-E09.359, E10.311-E10.359, E11.311-E11.359, E13.311-E13.359), ophthalmia nodosa (H16.241-H16.249), selected anterior segment disorders (H20.00-H21.1X1), and transient cerebral ischemic attacks with ocular involvement (G45.3) may require extended ophthalmoscopy and are covered.
Malignant and secondary neoplasms of the eye and adnexa (C69.20-C69.42, C79.89-C79.9) and benign neoplasms of the eye and adnexa (D31.20-D31.32) may require and are covered for extended ophthalmoscopy.
Other ocular conditions generally requiring monitoring may be covered for extended ophthalmoscopy when documentation supports medical necessity, subject to specified frequency limits.

A57483 — Billing and Coding: Visual Fields

J05

L34615 — Visual Fields

J05

A56726 — Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)

J06

A56747 — Billing and Coding: Magnetic Resonance Angiography (MRA)

J06

L33567

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