Summary & Overview
HCPCS G9391: Postoperative Refractive Outcome After Cataract Surgery
HCPCS Level II code G9391 denotes a postoperative refractive outcome for cataract surgery: the operated eye achieves a refraction within ±1 diopter at the one-month follow-up. This measure captures surgical accuracy and visual rehabilitation quality, making it relevant for ophthalmology practices, ambulatory surgical centers, and payers tracking outcomes-based performance. Nationally, documentation of refractive results informs quality measurement, patient counseling, and potential value-based payment frameworks.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of what G9391 represents clinically, typical sites of service, and the kinds of benchmarks and policy considerations commonly linked to outcome-based codes. The publication outlines where G9391 fits into postoperative care pathways, how it may be used in quality reporting, and what to expect in payer coverage and claims contexts. Data not available in the input where specific payer policies, modifiers, taxonomies, ICD-10 pairings, and related codes would normally be summarized.
Billing Code Overview
HCPCS Level II code G9391 documents that a patient achieves a postoperative refractive result within ±1 diopter for the eye that underwent cataract surgery, measured at the one-month follow-up visit. This code reflects a clinical outcome tied to the refractive accuracy of cataract surgery.
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Service type: Postoperative refractive outcome assessment
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Typical site of service: Ophthalmology clinic or ambulatory surgical follow-up visit
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Clinical & Coding Specifications
Clinical Context
A 72-year-old patient presents for the routine one-month postoperative visit following uncomplicated phacoemulsification cataract extraction with intraocular lens implantation in the right eye. The ophthalmologist documents visual acuity, performs manifest refraction, checks the anterior segment and posterior segment status, measures intraocular pressure, and verifies wound integrity. The specific clinical objective at this visit is to confirm that the refractive outcome meets target goals; in this scenario the manifest refraction for the operated eye is within ±1.0 diopter of the intended postoperative refractive target. The workflow includes collection of history focused on symptoms (vision, glare, halos), visual acuity testing, manifest refraction, slit-lamp exam, tonometry, and counseling on postoperative care. If the refraction is within the specified range, documentation supports reporting of G9391 for the postoperative refractive outcome assessment.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day as a procedure | Use if a significant E/M is performed at the one-month visit in addition to documenting refractive outcome |
57 | Decision for surgery | Not commonly appended at the one-month postoperative visit; typically used on the day the decision for cataract surgery was made