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Billing code

G858A — Static visual fields – technical component

Automated visual fields, technical

Bill G858 for performing static visual field testing when eye disease is present or suspected, with at least 50 points per eye.

Watch for: Not payable without suspected or present pathology and a permanent record with quantified deficits and fixation monitoring.

Code

G858A

Description

Static visual fields – technical component

FHO+ basket

Not in the FHO+ base rate basket (Schedule 2 or 2B).

Effective date

Apr 1, 2026

Termination date

No end date

Explanation

Updated October 26, 2026

Technical component of static (automated) visual field testing, when eye pathology is present or suspected. At least 50 points per eye.

What it covers

The technical part of static perimetry: performing the test and producing the permanent record (J91, J2).

Static perimetry is payable only when underlying pathology is present or suspected, and the test includes a permanent record measuring at least 50 points per eye, quantification of deficient points and monitoring of fixation and reliability (J91).

Billing rules

• Pathology must be present or suspected, with at least 50 points per eye, quantification of deficient points and fixation/reliability monitoring (J91).
• Technical and professional components have separate fee codes; bill the one(s) you provided (J90–J91).
• The technical component is not payable for a hospital in-patient, or if the patient is admitted to the same hospital within 24 hours for the same condition (GP11).
• Done in a hospital, the technical component is paid at 86.10% of the listed fee (GP11).
• You must have the training to perform the technical component personally and keep documentation of your quality assurance process (GP11).
• The technical component includes performing the test and sending a signed, dated written report to the referring provider (J2).

Often billed with

• G432 professional component when you also interpret the test (J91).
• A consultation or assessment (J3).

Related codes: G432, G857, G436, G820, A254

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Ophthalmology, page J91.

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