Summary & Overview

CPT 74018: Single Abdominal Radiograph, One View

CPT code 74018 denotes a single-view abdominal radiograph used to assess the structures and organs of the abdomen for causes of pain, distention, suspected obstruction, free air, or foreign body. This basic diagnostic imaging service remains a common first-line study in emergency and outpatient settings because of its speed, availability and utility in identifying gross abnormalities that guide further management.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. The publication outlines national benchmarks and billing considerations for CPT code 74018, describes typical sites of service and clinical contexts where the code is used, and summarizes common modifiers and coding relationships where available. Readers will find a concise explanation of the procedure’s clinical purpose, guidance on documentation elements typically associated with single-view abdominal radiography, and an overview of payer coverage patterns and administrative notes relevant to billing and claim adjudication.

This content is intended for a national audience of billing professionals, radiology providers and policy analysts seeking a practical reference on CPT code 74018 and its role in diagnostic imaging workflows.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare74018CPTabdominal x-rayradiologydiagnostic imagingemergency imagingoutpatient imaging

Billing Code Overview

CPT code 74018 reports a single X‑ray view of the structures and organs in the abdomen. This service is used to evaluate abdominal complaints and to assist in the diagnosis of conditions such as distention, obstruction, perforation, foreign body, or abnormal gas patterns.

Service type: Diagnostic radiology procedure — single abdominal radiographic view
Typical site of service: Hospital radiology department, outpatient imaging center, emergency department, or other facility where plain radiography is performed

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Clinical & Coding Specifications

Clinical Context

A typical adult patient presents to the emergency department with acute onset diffuse abdominal pain and decreased bowel movements. The emergency physician orders a single-view abdominal radiograph to evaluate for bowel obstruction, free intraperitoneal air, ileus, or radiopaque foreign body. The patient arrives in the radiology suite or portable radiography is performed at bedside if the patient is unstable. The radiologic technologist verifies identity, pregnancy status for females of childbearing age, and performs a single supine (or upright if indicated) abdominal radiograph using appropriate shielding and exposure. The image is reviewed by the radiologist who documents findings and issues a report to the ordering clinician. Billing uses 74018 for one view of abdominal structures; clinical documentation includes indication, view(s) obtained, positioning, and radiologist interpretation.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing only the radiologist interpretation separate from technical component.
`TC`	Technical component	Use when billing only the equipment, technologist, and supplies for the radiograph.
`RT`	Right side	Use if laterality is reported and specifically required (rare for single-view abdomen).
`LT`	Left side	Use if laterality is reported and specifically required (rare for single-view abdomen).
`22`	Increased procedural services	Use when work or resources exceed typical requirements and documentation supports unusual effort.
`52`	Reduced services	Use when the procedure is partially reduced or not completed, with documented reason.
`53`	Discontinued procedure	Use when the radiograph was started but discontinued for medical reasons.
`59`	Distinct procedural service	Use to indicate a separate, distinct service when multiple procedures on same day might overlap.
`76`	Repeat procedure by same physician/other qualified provider	Use when the same view is repeated during the same encounter.
`77`	Repeat procedure by another physician/qualified provider	Use when another provider repeats the radiograph.

Taxonomy Code	Specialty	Notes
`radiology`	Diagnostic Radiology	Primary specialty interpreting abdominal radiographs.
`emergency`	Emergency Medicine	Common ordering specialty for acute abdominal imaging.
`surgery`	General Surgery	Orders imaging for suspected obstruction or acute surgical abdomen.
`internalmedicine`	Internal Medicine/Hospitalist	Orders and coordinates inpatient imaging and follow-up.
`pediatrics`	Pediatric Radiology / Pediatrics	Pediatric patients may require single-view abdominal radiographs with pediatrics-specific technique.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K56.6`	Ileus, unspecified	Single-view abdominal radiograph can demonstrate diffuse bowel gas pattern suggestive of ileus.
`K56.69`	Other intestinal obstruction	Radiograph used as initial imaging to detect obstruction with dilated loops of bowel and air-fluid levels.
`K35.80`	Acute appendicitis without perforation	Abdominal radiograph may be obtained in workup though CT/US more sensitive; can show alternate findings.
`R10.9`	Unspecified abdominal pain	Common presenting indication for single-view abdominal radiograph to screen for obvious causes.
`T18.128A`	Foreign body in other GI tract, initial encounter	Radiopaque foreign bodies may be identified on a single abdominal radiograph.
`R19.7`	Diarrhea, unspecified	Radiograph may be used in differential when obstruction is a concern despite diarrhea.
`K65.9`	Peritonitis, unspecified	Radiograph can show free intraperitoneal air if perforation is present (upright view preferred).
`S36.891A`	Laceration of other intra-abdominal organ, initial encounter	Trauma-related abdominal radiograph may be an initial imaging step in unstable patients.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`74019`	Radiologic examination, abdomen; 2 views	Performed when two views are clinically indicated (e.g., supine and upright) instead of a single view billed with `74018`.
`74176`	Computed tomography, abdomen; without contrast material	Follow-up advanced imaging when plain radiograph is insufficient to evaluate suspected intra‑abdominal pathology.
`76700`	Ultrasound, abdominal, real time with image documentation; limited study	Alternative or adjunct imaging for suspected free fluid, appendicitis, or biliary pathology when radiograph is not diagnostic.
`74022`	Radiologic examination, abdomen; acute abdominal series (includes supine and upright or lateral decubitus)	Used when a more complete acute abdominal series is performed instead of a single-view `74018`.
`71045`	Radiologic examination, chest; single view, frontal	Often performed with abdominal radiograph when evaluating for free air beneath the diaphragm or alternate chest pathology.