CPT 74190 Peritoneal Air/Contrast Reimbursement | OpenPayer

Summary & Overview

CPT 74190: Radiographic Study After Intraperitoneal Air or Contrast Injection

CPT code 74190 indicates a diagnostic radiographic study obtained after the injection of air or contrast into the peritoneal cavity to assess the pattern of intraperitoneal air or contrast. Nationally, this code represents a focused imaging technique used in evaluation of suspected perforation, postoperative assessment, and other conditions where visualization of free intraperitoneal air or contrast distribution informs diagnosis and management. The procedure is typically performed in hospital radiology departments or outpatient imaging centers and is relevant to surgical, emergency, and radiology service lines.

Key payers commonly involved in coverage and reimbursement considerations include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of what the code represents, clinical context for when the study is used, and what to expect in terms of settings where the service is delivered. The publication also outlines benchmarks and policy-relevant considerations for payers, summarizes common modifiers applicable to imaging services, and highlights gaps where specific payer policies or related code mappings are not available. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare74190CPTperitoneal imagingradiographyintraperitoneal contrastdiagnostic imaginghospital radiologyoutpatient imaging

Billing Code Overview

CPT code 74190 describes a radiographic study performed after the injection of air or contrast into the peritoneal cavity to evaluate the distribution pattern of intraperitoneal air. This procedure is a diagnostic imaging service used to visualize the peritoneal cavity and assess for abnormalities that affect the pattern of free intraperitoneal air or contrast.

Service type: Diagnostic radiographic study of the peritoneal cavity after intraperitoneal air or contrast injection
Typical site of service: Hospital radiology department or outpatient imaging center

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult referred from general surgery or gastroenterology after a suspected perforated viscus, post‑operative concern for an anastomotic leak, or evaluation of intraperitoneal pathology. The patient arrives in the radiology department or an ambulatory imaging center after intraperitoneal instillation of air (pneumoperitoneum) or contrast during fluoroscopic or surgical procedures. The procedure 74190 is performed as a radiographic study where standard abdominal radiographs are obtained following injection of air or contrast into the peritoneal cavity to evaluate the distribution of free intraperitoneal air or contrast and to assess for leaks, diaphragmatic injury, or abnormal peritoneal contours.

Typical workflow:

The ordering clinician documents indication and recent procedure (e.g., post‑operative leak check).
The patient is positioned on the radiographic table; upright and supine views may be obtained per protocol.
Intraperitoneal air or contrast is instilled by the surgeon, interventional radiologist, or bedside clinician before transport, or by the performing team in fluoroscopy suite.
Radiographs are acquired and interpreted by a radiologist; images are archived to the PACS and a report is issued describing air/contrast pattern, localization of leak if present, and any acute findings.
Findings guide further management (observation, repeat imaging, interventional drainage, or return to the operating room).

Coding Specifications

CPT 74022: Abdominal Radiography with Single Chest View for Acute Abdomen

CPT-74018-SINGLE-ABDOMEN-XRAY-VIEW

CPT 74018: Single Abdominal Radiograph, One View

CPT-74019-ABDOMEN-XRAY-TWO-VIEWS

CPT 74019: Abdomen X‑ray, Two Views

CPT-74182-MRI-ABDOMEN-WITH-CONTRAST

CPT 74182: MRI of Abdomen With Contrast

CPT-74183-ABDOMINAL-MRI-WITH-AND-WITHOUT-CONTRAST

CPT 74183: MRI of Abdomen Without and With Contrast

CPT-74150-CT-ABDOMEN-NON-CONTRAST

CPT 74150: CT Scan of Abdomen Without Contrast

CPT-74021-ABDOMINAL-RADIOGRAPHIC-3-OR-MORE-VIEWS

CPT 74021: Abdominal X-ray, Three or More Views

CPT-74170-CT-ABDOMEN-WITH-AND-WITHOUT-CONTRAST

CPT 74170: CT Abdomen Without and With Contrast

CPT-74175-ABDOMINAL-CT-ANGIOGRAPHY-CONTRAST

CPT 74175: Abdominal CT Angiography with Contrast

74177-COMPUTED-TOMOGRAPHY-ABDOMEN-AND-PELVIS-WITHOUT-CONTRAST

CPT 74177: CT Scan of Abdomen and Pelvis with and without Contrast

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Taxonomy Code	Specialty	Notes
`207RR0400X`	Radiology	Diagnostic radiologists interpret abdominal radiographs and provide final reports.
`208800000X`	General Surgery	Surgeons often request this study post‑operatively to evaluate for leaks or perforation.
`2084P0800X`	Interventional Radiology	Interventional radiologists may perform intraperitoneal instillation or interpret immediate fluoroscopic series.
`263L00000X`	Emergency Medicine	Emergency physicians order upright/supine imaging for acute abdominal pain and suspected perforation.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K63.1`	Perforation of intestine (nontraumatic)	Identifies suspected intestinal perforation prompting intraperitoneal air/contrast study to localize free air.
`K91.89`	Other postprocedural complications and disorders of digestive system	Used for post‑operative evaluation when a leak or complication is suspected.
`K35.80`	Acute appendicitis without perforation, unspecified	May be associated when post‑operative imaging or atypical presentation leads to evaluation for perforation.
`K57.20`	Diverticulitis of large intestine without perforation or abscess	When complicated disease is suspected, contrast/air study can assess for contained perforation or fistula.
`T81.4XXA`	Infection following a procedure, initial encounter	Used when imaging is performed to evaluate for leaks or collections related to postprocedural infection.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`74022`	Radiologic examination, abdomen; 1 view, frontal	Often obtained as an initial or supplemental view alongside `74190` to document free air distribution.
`74018`	Radiologic examination, abdomen; 2 views	Commonly performed with `74190` when both upright and supine abdominal radiographs are required.
`71045`	Radiologic examination, chest; single view, frontal	Frequently obtained with `74190` to evaluate subdiaphragmatic free air or thoracic causes of symptoms.
`49000`	Unlisted laparoscopy procedure, abdomen, peritoneum and/or omentum	Represents potential operative intervention if `74190` demonstrates a significant leak or perforation necessitating laparoscopy.
`74300`	Radiologic supervision and interpretation, contrast radiography of abdomen and pelvis	May be used for supervisory or interpretation charges related to contrast studies of the peritoneal cavity in conjunction with `74190`.

`26`	Professional component	Use when billing only the interpreting radiologist's professional component separate from technical imaging.
`TC`	Technical component	Use when billing only the technical component (facility, equipment, technologist) for the radiograph.
`52`	Reduced services	Use for substantially reduced radiographic series (fewer views than typical) due to clinical condition.
`53`	Discontinued procedure	Use when the study is started but terminated due to patient intolerance or complication.
`76`	Repeat procedure by same physician	Use when the same physician repeats the radiographic study on the same day for further evaluation.
`77`	Repeat procedure by another physician	Use when a different physician repeats the study on the same day.
`78`	Return to operating/procedure room for related procedure	Use when the patient returns to the OR or procedure room intra‑ or post‑op for a related intervention following imaging.
`22`	Unusual procedural services	Use when technical or interpretive work substantially exceeds typical effort, documented and justified.
`50`	Bilateral procedure	Rarely applicable; use only if bilateral anatomic reporting conventions require a bilateral modifier.
`56`	Preoperative management only	Use when only the preoperative portion related to the imaging service is furnished by the reporting provider.
`62`	Two surgeons	Use when two surgeons of different specialties perform the surgical portion that led to the study and documentation requires the modifier for related billing interactions.
`66`	Surgical team (if applicable)	Use when multiple surgeons form a surgical team related to complex operative management leading to the study.
`QX`	Ordering/Referring NPI not required — modifier for certain services	Use when applicable credentialing arrangements require demonstration of certified practitioner ordering/performing components per payer rules.
`QY`	Attending physician service — inpatient	Use where payer policy requires attending physician presence for the professional component in an inpatient setting.

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