Summary & Overview
HCPCS G9947: Leg Pain VAS Preoperative and Postoperative Measurement
HCPCS Level II code G9947 records measurement of leg pain using the visual analog scale (VAS) within three months before surgery and again at about three months after surgery (6–20 weeks). This code identifies a standardized, patient-reported outcome measure tied to surgical care pathways and quality monitoring. Nationally, such functional and pain measures are increasingly important for postoperative outcome tracking, value-based payment models, and quality reporting.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for the measure, how it fits into perioperative outcome monitoring, and the policy and billing implications for clinicians and institutions. The publication summarizes available benchmarks where present, highlights common documentation and timing expectations for the measure, and outlines how the code interfaces with quality measurement and postoperative follow-up workflows. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code G9947 documents that leg pain was measured by the visual analog scale (VAS) within three months preoperatively and again at three months postoperatively (defined as 6 to 20 weeks). The measure captures patient-reported leg pain intensity using the VAS to track symptom change surrounding a surgical episode.
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Service type: Measurement of patient-reported leg pain using the visual analog scale before and after surgery
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Typical site of service: Outpatient surgical clinics, preoperative assessment units, and postoperative follow-up visits in ambulatory care settings
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with peripheral artery disease and chronic right leg pain undergoes lower extremity revascularization. Preoperative evaluation includes a baseline leg pain assessment using the visual analog scale (VAS) within three months prior to surgery. Postoperative follow-up at approximately three months (6 to 20 weeks) includes a repeat VAS measurement to quantify change in leg pain and document surgical outcome and recovery. The clinical workflow includes: initial clinic or preoperative testing visit to record baseline VAS for leg pain; the operative encounter for the revascularization procedure; routine postoperative visits with wound checks and functional assessment; and a dedicated outcome visit at 6–20 weeks where the clinician documents the VAS score for leg pain, compares it to baseline, and records any relevant interventions or complications. Typical site of service is an outpatient clinic, preoperative testing clinic, or ambulatory surgery center, with the VAS assessments documented in the electronic health record at both preoperative and postoperative visits.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when reporting only the professional component of a service, if applicable to associated testing or reporting |