Summary & Overview
CPT 4042F: Missed Prophylactic Antibiotics for Surgery
CPT code 4042F denotes failure to provide prophylactic antibiotics within four hours before surgical incision or during the procedure. As a quality-reporting measure, this code captures instances where perioperative antibiotic timing did not meet recommended timing windows, affecting surgical-site infection prevention efforts. Nationally, accurate reporting of 4042F matters for patient safety metrics, hospital quality programs, and payer quality assessments.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the code’s clinical context, the typical settings in which it is reported, and the implications for quality measurement and compliance. The publication also outlines common reporting patterns and benchmarks where available, summarizes relevant policy updates affecting perioperative prophylaxis timing, and explains how 4042F integrates with surgical quality programs.
This summary provides clinicians, coders, and administrators with a concise reference to understand the purpose of 4042F, the service contexts in which it is applied, and the types of information and benchmarks addressed in the full publication. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 4042F indicates that the provider did not administer prophylactic antibiotics within four hours prior to a surgical incision or during the surgical procedure. This code is used to report the absence of timely perioperative antibiotic prophylaxis for a surgical patient.
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Service type: Surgical perioperative quality reporting
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Typical site of service: Hospital operating room or surgical suite, ambulatory surgical center, or any clinical setting where a surgical procedure requiring prophylactic antibiotics is performed.
Clinical & Coding Specifications
Clinical Context
A typical patient is a 45-year-old male scheduled for elective inguinal hernia repair under general anesthesia. Preoperative assessment confirms no active infection and no contraindication to antibiotics. Per surgical protocols, prophylactic intravenous antibiotics (commonly a first-generation cephalosporin) are indicated within 60 minutes prior to incision. In this scenario the provider documents that no prophylactic antibiotics were administered within four hours prior to the surgical incision or during the procedure, triggering reporting of code 4042F. The clinical workflow includes preoperative evaluation by the surgeon and anesthesiologist, briefing of the perioperative nursing team, time-out, and intraoperative documentation. The omission may be documented in the operative note and anesthesia record, with rationale such as documented allergy, patient refusal, supply issue, or an intentional decision based on clinical judgment. Postoperative care includes monitoring for surgical site infection, counseling the patient, and documenting follow-up surveillance for potential infectious complications.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
24 | Unrelated evaluation and management service by the same physician during a postoperative period | Use when an unrelated E/M occurs during global period unrelated to the surgery. |
| Significant, separately identifiable E/M service on the same day as a procedure | Use when a distinct E/M is provided the same day as the operative procedure.