Summary & Overview
HCPCS G9519: Postoperative Refractive Outcome Within 90 Days
HCPCS Level II code G9519 documents a postoperative refractive outcome: the patient attains a final refraction (spherical equivalent) within +/- 1.0 diopter of the planned refraction within 90 days of surgery. This code captures an objective clinical outcome used in cataract and refractive surgical care to track the accuracy of surgical planning and immediate postoperative management. Nationally, standardized reporting of refractive outcomes supports quality measurement, value-based payment models, and benchmarking across surgical practices.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context and service setting, an overview of common modifiers, and what typical reporting of this outcome implies for postoperative care pathways. The publication provides benchmarks and policy-relevant context for how G9519 is used in practice, outlines payer coverage considerations where available, and summarizes implications for coding and documentation workflows. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code G9519 indicates that a patient achieves final refraction (spherical equivalent) within +/- 1.0 diopters of their planned refraction within 90 days of surgery. This measure reflects postoperative refractive outcome assessment following ocular surgery intended to reach a target refraction.
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Service type: Postoperative refractive outcome assessment
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Typical site of service: Outpatient ophthalmology clinic or ambulatory surgical follow-up visit
Clinical & Coding Specifications
Clinical Context
A typical patient is a 68-year-old who underwent elective cataract extraction with intraocular lens implantation. Postoperative follow-up includes serial refractions to determine the final refractive outcome. The clinical workflow: preoperative biometric measurements and planned target refraction are documented preop; surgery is performed in an ambulatory surgical center or hospital outpatient setting under monitored anesthesia care; postoperative visits occur at 1 day, 1 week, 1 month and up to 90 days. Manifest or cycloplegic refraction performed within 90 days of surgery demonstrates the patient’s spherical equivalent is within +/- 1.0 diopter of the planned refraction, qualifying for reporting G9519. Typical sites of service: Ambulatory Surgical Center, Hospital Outpatient Department, or Ophthalmology clinic for postoperative refraction testing. Typical scenario modifiers that may apply include those reflecting unusual procedural services, bilateral or staged procedures, or anesthesia-related modifiers documented on accompanying surgical CPT claims.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the service requires substantially greater work than typical and separate documentation supports increased complexity during perioperative care or refraction testing. |