CPT® Code 99173 is used to report quantitative visual acuity screening performed on both eyes. This screening test measures a patient’s ability to see clearly at a specified distance and is commonly performed as part of preventive care, routine physical exams, or school and occupational health screenings. The test helps identify vision problems such as refractive errors, amblyopia, or other visual impairments that may require further evaluation or treatment.
Key Facts About CPT® 99173
Service type: Vision screening test
Provider type: Physicians and qualified healthcare professionals
Medical services included: Yes—quantitative measurement of visual acuity in both eyes
Test scope: Bilateral visual acuity assessment
Test method: Standardized visual acuity charts or equivalent screening tools
Common clinical indications:
- Routine preventive health examinations
- Pediatric wellness visits and school physicals
- Vision screening for early detection of visual impairment
- Occupational or employment-related screenings
- Monitoring visual acuity changes over time
When to Use CPT® 99173
CPT 99173 is appropriate when:
- A quantitative visual acuity screening is performed on both eyes
- The screening is part of preventive care or medically necessary evaluation
- Results are documented using standardized visual acuity measurement methods
- The screening is performed to detect vision abnormalities or monitor changes
Examples:
- Vision screening during an annual physical exam
- Pediatric visual acuity testing during a well-child visit
- Occupational vision screening for employment clearance
- Routine screening to identify potential vision problems
Documentation Requirements
To support CPT 99173 billing, documentation should include:
- Patient identifiers and date of service
- Clinical indication or preventive screening purpose
- Method used for visual acuity testing
- Quantitative results for each eye
- Interpretation of screening results
- Provider credentials and signature
Complete documentation ensures compliance, supports reimbursement, and facilitates appropriate follow-up care if needed.
Reimbursement and Coding Considerations
- CPT 99173 is commonly billed as part of preventive care or screening services
- Coverage varies depending on payer policies and patient eligibility
- This code applies to quantitative screening, not comprehensive eye exams
- Proper documentation must include measurable visual acuity results
- Verify payer-specific guidelines for preventive screening reimbursement
Accurate coding and documentation help ensure appropriate reimbursement and reduce claim denials.
How OptiMantra Supports Visual Acuity Screening
OptiMantra’s integrated EMR and practice management system simplifies documentation and billing for CPT 99173:
With OptiMantra, providers can:
- Document visual acuity screening results in structured templates
- Record quantitative measurements for each eye
- Link screening results to preventive care visits and patient records
- Track vision screening history over time through longitudinal records
- Support accurate CPT and ICD-10 code selection for compliant screening billing
By centralizing preventive screening documentation and billing, OptiMantra helps practices improve efficiency, ensure compliance, and optimize reimbursement.
Try OptiMantra for free here!
Disclaimer: CPT® codes are maintained by the American Medical Association. This guide is for informational purposes only and does not replace official coding guidelines or payer policies.
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