ModifiedUnitedHealthcarePolicy 2025TO660D

Ocular Photoscreening (Instrument-based) — Coverage Criteria

This UnitedHealthcare medical policy governs instrument‑based ocular photoscreening and retinal polarization/birefringence scanning for detection of amblyopia risk factors and strabismus, and applies to UnitedHealthcare Commercial and Individual Exchange benefit plans.

Policy Summary

PayerUnitedHealthcare

PolicyOcular Photoscreening (Instrument-based) — Coverage Criteria

Policy CodePolicy 2025TO660D

Change TypeBenefit clarificationclinical evidence update

Effective DateJun 1, 2025

Next Review DateN/A

Key ActionVerify member-specific preventive benefits and confirm coverage for instrument-based screening codes (e.g., 99174, 99177) before billing.

SourceLink

POLICY UPDATE CHANGES

Benefit Considerations: Added language to clarify most UnitedHealthcare Commercial and Individual Exchange plans cover instrument-based screenings (CPT codes 99174 and 99177) as a preventive care services benefit in certain circumstances.

Clinical Evidence section updated to reflect the most current information.

6 yearsage threshold (developmentally delayed)

1-5 yrsmass screening age range

0469T, 99174, 99177referenced procedure codes

91%blinq specificity (Bosque et al.)

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

100%blinq sensitivity (Bosque et al.)

Coverage Criteria

inv-01: Medically necessary coverage

Covered when the following conditions are met:

Proven / medically necessary situations: Instrument-based ocular photoscreening is proven and medically necessary for either of the following: (1) individuals 6 years of age and older who are developmentally delayed and are unable or unwilling to cooperate with routine visual acuity screening; OR (2) as a mass screening instrument for children 1 through 5 years of age (ends on 6th birthday)age criteria / developmental delay

From policy coverage rationale

inv-02: Unproven / Not medically necessary

Not covered / considered unproven in these situations:

Unproven situations: Instrument-based ocular photoscreening is unproven and not medically necessary for all other individuals not meeting the medically necessary criteria; this includes children less than 1 year of age due to insufficient evidence of safety and/or efficacy.

Policy statement: photoscreening unproven for <1 year

Retinal birefringence / retinal polarization: Retinal birefringence scanning (retinal polarization scanning) is unproven and not medically necessary for detection of eye misalignment or strabismus due to insufficient quality evidence overall (studies are small, single‑center, or from high‑risk populations).

Policy separates general photoscreening from retinal birefringence scanning

inv-03: Guideline-based screening criteria

Guidance from professional bodies and public health organizations relevant to instrument‑based screening:

AAO guidance: Vision screening should be performed at an early age and at regular intervals; subjective visual acuity testing is preferred when feasible; instrument‑based screening is useful for some young children and those with developmental delays, and for assessing amblyopia risk factors in children up to 5 years.

American Academy of Ophthalmology (2022)

AAO/AAPOS/AACO joint statement: Instrument‑based screening devices can be used at any age if available but have better success after 18 months; devices may be repeated annually through 5 years or until optotype‑based acuity is reliable.>= 18 months preferred success

Joint policy statement (AAO/AAPOS/AACO)

NCCVH recommendations: Children aged 36 months to younger than 72 months should be screened annually (best practice) or at least once between third and sixth birthdays; two best practice methods are monocular visual acuity testing and instrument‑based autorefraction; children unable to complete testing should be rescreened or referred directly.

inv-04: Evidence summaries for specific device types

Key study findings and limitations for instrument‑based devices:

Photoscreening evidence: Large community photoscreening programs report feasible implementation with age‑dependent unreadable rates and generally high positive predictive value; earlier screening (<3 years) has higher unreadable rates but can detect amblyogenic risk factors (examples: Longmuir et al. 2010 & 2013; Stiff et al. 2020).

Community program data demonstrate feasibility but age‑dependent unreadable rates

Retinal birefringence / blinq evidence: Studies of retinal birefringence devices (e.g., blinq, Pediatric Vision Scanner) show mixed results — some report high sensitivity and specificity (Bosque et al. 2021; Jost et al. 2014; Loudon et al. 2011) but are limited by small sample sizes, single‑center or high‑risk populations, non‑standard calculations, and variable comparative performance versus other devices; overall evidence quality is insufficient to support routine use.

Evidence limited by study design and generalizability

Instrument-based ocular photoscreening is considered unproven and not medically necessary for children younger than 1 year of age because the policy finds insufficient evidence of safety and/or efficacy in this age group. Providers should not rely on photoscreening as a covered diagnostic or screening modality for infants under 1 year unless specific member benefits or other authoritative guidance indicate otherwise.

The policy concludes that retinal birefringence scanning (also described as retinal polarization scanning) currently lacks sufficient high-quality evidence to support routine use. Available studies are limited by small sample sizes, single-center designs, enrollment of high‑risk populations, nonstandard analytic methods in some reports, and mixed results across comparative studies, which together limit generalizability and overall evidence quality.

Retinal birefringence/retinal polarization scanning is designated unproven and not medically necessary for detection of eye misalignment (strabismus) and related indications due to insufficient evidence of safety and efficacy. Although some device-specific studies report promising sensitivity or specificity, the policy does not consider current evidence adequate to support routine coverage for alignment detection or general screening purposes.

The U.S. Preventive Services Task Force (USPSTF, 2017) concluded there is a moderate net benefit for vision screening to detect amblyopia or its risk factors in children aged 3 to 5 years. For children younger than 3 years, the USPSTF found that the balance of benefits and harms is uncertain and evidence is insufficient to determine a net benefit.

Coding

Temporary CPT (specific device/procedure)CPT

0469T

Retinal polarization scan, ocular screening with on-site automated results, bilateral

Covered CPT Codes (referenced/preventive)CPTCovered

99174	Instrument-based ocular screening; bilateral; with remote analysis and report
99177	Instrument-based ocular screening; bilateral; with on-site analysis

Example diagnosis codes cited for developmental delay / special populationsICD-10

F70	Mild intellectual disabilities
F71	Moderate intellectual disabilities
F72	Severe intellectual disabilities
F73	Profound intellectual disabilities
F79	Unspecified intellectual disabilities
F80.0	Phonological disorder
F84.0	Autistic disorder
G80.0	Spastic quadriplegic cerebral palsy
Q90.9	Down syndrome, unspecified
R62.0	Delayed milestone in childhood

Covered CPT Codes (instrument-based screening referenced in policy update)CPTCovered

99174	Instrument-based ocular screening
99177	Instrument-based ocular screening

Screening age recommendations (NCCVH best practice)

Recommended screening age (NCCVH best practice)Children 36 months to younger than 72 months should be screened annually (best practice) or at least once between the third and sixth birthdays.

Acceptable testing methodsMonocular optotype acuity testing (HOTV or LEA Symbols calibrated for 10-ft/3-m) or instrument-based screening (Retinomax autorefractor or SureSight Vision Screener in child mode with VIP Study pass/fail criteria).

Supplemental toolsPlusoptix photoscreener and PASS stereoacuity test are considered acceptable supplemental practices to best-practice methods.

Personnel and logisticsVision screening requires trained/certified personnel, appropriate space, maintained equipment/supplies, and recording/reporting results to the medical home or appropriate agency.

Provider Actions & Billing Guidance

Prior Authorization

Verify member preventive benefit

Verify whether instrument-based ocular screenings are covered as a preventive service for the member before scheduling or billing. Coverage for CPT codes 99174, 99177 and related ocular screening services may vary by member-specific benefit plan and applicable state or federal mandates.

Verify member-specific preventive benefit and any applicable state or federal mandate prior to service.
If screening is billed as preventive, ensure plan allows preventive coverage for instrument-based screenings (CPT 99174, 99177).
If coverage is uncertain, obtain prior authorization or clinical review per the member plan requirements.

Note

Coverage clarification for instrument-based screenings

Instrument-based screenings (for example, photoscreening or automated refraction) are typically covered under preventive care when allowed by the member's plan. Confirm that the use of instrument-based modalities is consistent with plan preventive benefit language before coding or submitting claims.

Affected CPT codes: 99174, 99177.

Background

BACKGROUND: Ocular photoscreening uses instrument-based imaging to identify amblyopia risk factors by assessing photorefraction, corneal light reflexes, and fundus reflections with minimal patient cooperation. The policy supports instrument-based photoscreening as medically necessary in two scenarios: (1) for individuals aged 6 years and older who are developmentally delayed and cannot cooperate with routine visual acuity testing, and (2) as a mass screening tool for children aged 1 to 5 years (up to the sixth birthday). However, retinal birefringence (retinal polarization) scanning is treated separately and is considered unproven due to overall limited and mixed-quality evidence from small or single-center studies.

Definitions

Ocular photoscreening

DefinitionOcular photoscreening collects and analyzes images of the eyes (digital or film) to assess refractive state, corneal light reflex position, and fundus reflections to identify amblyopia risk factors; results are typically graded as pass/fail/repeat.

Appropriate useUseful for assessing amblyopia risk factors in young children and those unable to perform subjective visual acuity testing; instrument-based screening can be used from 18 months and repeated annually through 5 years per AAO/AAO S guidance.

OperationPhotographs are taken in a darkened room while the child looks at the camera; images may be sent to a central laboratory for masked analysis by trained personnel or ophthalmologists.

Screening purposeDetects refractive error, corneal light reflex asymmetry, abnormal fixation and signs of strabismus to allow early referral and treatment for improved visual outcomes.

Retinal birefringence scanning (retinal polarization scanning)

Revision History

2025-06-01policy_revisionLatest

Benefit Considerations: added language clarifying that most UnitedHealthcare Commercial and Individual Exchange plans cover instrument-based screenings (CPT codes 99174 and 99177) as a preventive care services benefit in certain circumstances; Clinical Evidence section updated and previous policy version 2025T0660C archived.

Policy Summary

PayerUnitedHealthcare

PolicyOcular Photoscreening (Instrument-based) — Coverage Criteria

Policy CodePolicy 2025TO660D

Change TypeBenefit clarificationclinical evidence update

Effective DateJun 1, 2025

Next Review DateN/A

Key ActionVerify member-specific preventive benefits and confirm coverage for instrument-based screening codes (e.g., 99174, 99177) before billing.

SourceLink

On This Page

36 to <72 months annual screening

National Center for Children’s Vision and Health

USPSTF stance: USPSTF finds moderate net benefit for vision screening to detect amblyopia or its risk factors in children aged 3 to 5 years; the evidence is insufficient to determine benefits versus harms for children younger than 3 years.3 to 5 years: moderate net benefit; <3 years: insufficient evidence

USPSTF (2017)

If plan excludes preventive coverage, document medical necessity and follow standard medical policy and plan rules.

Documentation Required

Coding and benefit documentation

Document the screening method, results, and any referral or follow-up actions in the medical record. Include the instrument used, whether analysis was performed on-site or remotely, and the report or referral to an eye care specialist when indicated.

Document instrument/model used (e.g., Retinomax, SureSight, Plusoptix) and mode (on-site analysis vs remote analysis).
Record screening results, pass/fail criteria, and any referral to optometrist/ophthalmologist.
Maintain training/certification records for screening personnel as appropriate.

Documentation Required

Referral and documentation best practice

When a child fails screening, include a documented referral to a comprehensive eye examination and evidence of follow-up in the member record to support continued care and any subsequent claims.

Document date of referral, receiving provider (optometrist/ophthalmologist), and any appointments or outcomes.
Attach screening report or analysis when submitting for medical review or appeals.

Billing Rule

Coverage contingent on member plan

Coverage is contingent on the member-specific benefit plan. Listing of codes in this policy is for reference only and does not guarantee coverage or payment.

Reference the member-specific benefit plan document and any applicable federal or state mandates.
Codes referenced: 0469T (related), 99174, 99177 (instrument-based ocular screening).

Note

Member-specific benefit verification required

Before relying on this Medical Policy for coverage decisions, check the member specific benefit plan. UnitedHealthcare policies may be modified and do not replace the member plan document. For Medicare Advantage members, confirm any NCD/LCD or Medicare guidance applicable to the service.

Member-specific benefit verification is required for coverage determination.
UnitedHealthcare may use external tools (e.g., InterQual) to assist in administering benefits.

DefinitionRetinal birefringence scanning (retinal polarization scanning) measures retinal polarization to detect central fixation and thereby identify small- and large-angle strabismus; it is noninvasive and requires minimal patient cooperation.

Intended clinical roleDesigned to detect strabismus and certain amblyopia types in young children who cannot reliably perform optotype testing.

Evidence summaryCurrent evidence is mixed and limited: some studies (e.g., Bosque et al.) report high sensitivity/specificity but overall evidence is insufficient due to small sample sizes, single-center designs, and high-risk populations.

Instrument-based screening

DefinitionInstrument-based screening includes devices such as photoscreeners, autorefractors, and retinal birefringence scanners to assess amblyopia risk factors and strabismus in children who cannot reliably perform subjective visual acuity testing.

Age and use guidanceInstrument-based screening is useful for some young children and those with developmental delays; devices have better success after 18 months and can be repeated annually through age 5 or until optotype acuity is reliable.

Preferred testingSubjective visual acuity testing is preferred when feasible; instrument-based methods are complementary when cooperation is limited.

Retinal birefringence scanning / birefringent foveal scanning

Technique descriptionBirefringent foveal scanning (example devices: blinq, Pediatric Vision Scanner) assesses binocular fixation or foveal fixation to detect amblyopia and strabismus with minimal patient cooperation.

Study findingsSome comparative and validation studies report higher sensitivity/specificity compared with other automated screeners (e.g., Jost et al. showed PVS performing better than SureSight in a referred cohort), but these studies often involve higher-prevalence or specialized populations.

Policy stanceOverall evidence quality is insufficient to support routine use; retinal birefringence/birefringent foveal scanning is considered unproven and not medically necessary outside specific supported indications.