Summary & Overview
CPT 76775: Limited Retroperitoneal Ultrasound, Focused Abdominal Imaging
Headline: CPT code 76775: Limited Retroperitoneal Ultrasound for Focused Abdominal Assessment
Lead: CPT code 76775 identifies a limited retroperitoneal ultrasound used to obtain real-time imaging of specific abdominal structures—commonly the kidneys, urinary bladder, or abdominal aorta—when a focused evaluation is required. The code matters nationally as a common imaging designation for targeted diagnostic evaluation that affects clinical workflow, coding accuracy, and payment across major payers.
CPT code 76775 represents a focused, noninvasive ultrasound examination of retroperitoneal structures performed with real-time image documentation. This procedure is used when clinicians need a limited assessment rather than a complete abdominal ultrasound, supporting diagnosis of conditions such as hydronephrosis, aortic aneurysm screening or follow-up, and focal renal pathology. The code is widely used across major national payers, including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
This publication provides a national overview of coding context and clinical use. Readers will find concise benchmarks and policy-relevant details about how the code is applied clinically, common billing considerations, and how coverage practice varies among major payers. Data not available in the input for payer-specific rates, associated taxonomies, and ICD-10 pairings is noted where applicable. The focus is to clarify the clinical and billing footprint of CPT code 76775 for health system coders, revenue cycle staff, and policy analysts.
Billing Code Overview
CPT code 76775 describes a limited retroperitoneal ultrasound performed to assess abdominal structures such as the kidneys, urinary bladder, and aorta. The procedure is a noninvasive, real-time imaging study that documents focused findings when a full abdominal or complete retroperitoneal examination is not indicated.
Service Type: Limited diagnostic ultrasound study (retroperitoneal focus)
Typical Site of Service: Hospital outpatient imaging departments, hospital inpatient units, and freestanding outpatient imaging centers
Clinical & Coding Specifications
Clinical Context
A 58-year-old outpatient presents to the radiology department with flank pain, hematuria, and a history of hypertension. The ordering clinician requests a focused retroperitoneal ultrasound to evaluate the kidneys and abdominal aorta for hydronephrosis, renal masses, or an abdominal aortic aneurysm. The patient is registered at the imaging center, screened for contraindications, and positioned supine and in decubitus positions as needed. A sonographer performs a limited real-time ultrasound exam of the retroperitoneum, documents representative images and cine clips of the kidneys, perirenal spaces, urinary bladder, and visualized portion of the aorta, and records measurements of any abnormalities. The images and preliminary findings are reviewed by a radiologist who finalizes the report with impressions such as unilateral hydronephrosis or an aortic aneurysm. The study is coded as 76775 when the examination is limited in scope and real-time image documentation is obtained. Typical sites of service include hospital outpatient radiology departments, freestanding imaging centers, and emergency departments when a focused retroperitoneal assessment is required.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing only the physician interpretation/report of the ultrasound separate from technical service |
52 | Reduced services | When the exam is partially completed or limited by patient factors beyond a standard limited study |
53 | Discontinued procedure | When the ultrasound is started but terminated due to patient instability or other emergent reasons |
59 | Distinct procedural service | When a truly separate and distinct ultrasound service is performed at a different anatomic site or time |
76 | Repeat procedure by same physician | When the same provider repeats 76775 during the same encounter |
77 | Repeat procedure by another physician | When a different provider repeats the limited retroperitoneal ultrasound |
77 | Repeat procedure by another physician | When a different provider repeats the limited retroperitoneal ultrasound |
TC | Technical component | When billing only the technical portion (sonographer and equipment) of the study |
26 | Professional component | When billing only the physician interpretation/report of the ultrasound separate from technical service |
59 | Distinct procedural service | When a truly separate and distinct ultrasound service is performed at a different anatomic site or time |
52 | Reduced services | When the exam is partially completed or limited by patient factors beyond a standard limited study |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207RH0000X | Radiology — Diagnostic Radiology | Most common specialty interpreting retroperitoneal ultrasound |
207L00000X | Radiology — Vascular Interpretation | When focused aortic assessment or aneurysm surveillance is performed |
2080P0001X | Internal Medicine — Hospitalist | Hospital-based ordering or interpretation in point-of-care settings |
207V00000X | Diagnostic Medical Sonography (Ultrasound) | Sonographers perform the technical acquisition of images |
362A00000X | Emergency Medicine | Point-of-care limited retroperitoneal ultrasound in the ED |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
N20.0 | Calculus of kidney | Common indication for renal ultrasound to evaluate obstruction or hydronephrosis |
N13.2 | Hydronephrosis with renal and ureteral calculous obstruction | Ultrasound assesses degree of hydronephrosis and urinary tract dilation |
R31.0 | Gross hematuria | Hematuria prompts evaluation of kidneys and bladder with focused retroperitoneal imaging |
N28.9 | Disorder of kidney and ureter, unspecified | Nonspecific renal symptoms often start with limited ultrasound |
I71.3 | Abdominal aortic aneurysm, ruptured | Focused retroperitoneal ultrasound can detect aneurysm and free fluid in emergent settings |
I71.4 | Abdominal aortic aneurysm, without rupture | Surveillance or initial detection of aortic dilation may be done with limited aortic imaging |
R10.9 | Abdominal pain, unspecified | Common presenting symptom leading to a focused retroperitoneal exam |
C64.9 | Malignant neoplasm of kidney, unspecified | Evaluation for renal masses or suspicious findings on limited ultrasound |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
76700 | Ultrasonic guidance for abdominal aorta and branches (e.g., for biopsy) | More comprehensive abdominal ultrasound; may be performed when broader abdominal assessment is needed beyond the limited retroperitoneal exam |
76942 | Ultrasonic guidance for needle placement (e.g., biopsy, aspiration) | Used when ultrasound guidance is required for percutaneous renal or retroperitoneal interventions following diagnostic findings |
76770 | Complete abdominal ultrasound, including retroperitoneal organs | Performed when a full abdominal survey is indicated instead of the limited 76775 study |
93975 | Duplex scan of abdominal aorta with velocities, limited study | Performed when further vascular characterization of the aorta is needed after a limited retroperitoneal ultrasound |
99284 | Emergency department visit, moderate complexity | Clinical encounter code commonly associated when 76775 is performed in the ED for acute flank pain or suspected aneurysm |