C9768 EUS Hepatic Pressure Measurement Reimbursement

HCPCS Level II code C9768 represents an endoscopic ultrasound-guided direct measurement of the hepatic portosystemic pressure gradient, reported in addition to the primary endoscopic procedure. This code captures a specialized diagnostic vascular pressure assessment used in evaluation and management of portal hypertension and related hepatic vascular conditions. Nationally, the procedure is clinically significant because it provides direct hemodynamic data that can influence prognostication and treatment planning for patients with suspected or known portal hypertension.

Key payers included in the review are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find an overview of the clinical context for the procedure, coding scope, and the types of settings where the service is typically delivered. The publication summarizes coverage considerations and common billing modifiers and identifies relevant operational benchmarks where available. It also outlines what clinicians and billing teams need to document to support reporting of this add-on diagnostic service and highlights areas where payers commonly request additional justification.

This national-focused summary is intended for healthcare administrators, coding and billing staff, and clinicians involved in hepatology and advanced endoscopy.

Billing Code Overview

HCPCS Level II code C9768 describes endoscopic ultrasound-guided direct measurement of hepatic portosystemic pressure gradient by any method. This service captures the direct assessment of the pressure difference between the portal and systemic (hepatic venous) circulations performed using endoscopic ultrasound guidance.

Service type: Diagnostic vascular pressure measurement performed via endoscopic ultrasound
Typical site of service: Hospital-based endoscopy suite or outpatient endoscopy center

Clinical Context

A 56-year-old patient with a history of chronic liver disease and suspected portal hypertension is referred for endoscopic ultrasound (EUS) evaluation. Clinical indications include refractory ascites, variceal bleeding, or abnormal liver synthetic function with unexplained portal hypertension on imaging. The patient undergoes sedation in an endoscopy suite or ambulatory surgical center; informed consent includes risks of EUS and transhepatic puncture. An endosonographer performs EUS to visualize the left and right portal venous system and hepatic veins. Under EUS guidance, a fine needle is advanced through the gastric or duodenal wall into the liver parenchyma to access a portal vein and a hepatic vein (or inferior vena cava), and direct pressure measurements are taken to calculate the hepatic portosystemic pressure gradient (HVPG). The procedure may be billed in addition to the primary EUS procedure using billing code C9768. Typical monitoring includes continuous hemodynamics and post-procedure observation for bleeding or bile leak. Typical sites of service are hospital-based endoscopy units, ambulatory surgery centers, or specialized endoscopy suites where EUS and invasive pressure monitoring are available.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when work required is substantially greater than usual for the primary EUS procedure and documentation supports increased complexity.

Taxonomy Code	Specialty	Notes
207L00000X	Gastroenterology	Primary specialty performing diagnostic and therapeutic EUS and EUS-guided procedures.
207K00000X	Hepatology	Consulting specialty for liver disease assessment and management of portal hypertension.
2084P0800X	Interventional Radiology	Related specialty for alternative transjugular HVPG measurement and image-guided vascular access.
163W00000X	Anesthesiology	Provides sedation/anesthesia for complex or prolonged EUS-guided invasive procedures.
208600000X	Surgery - General	May be involved when combined surgical/endoscopic interventions or complications require surgical management.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K76.6`	Portal hypertension	Direct indication for measuring hepatic portosystemic pressure gradient to quantify severity.
`K74.60`	Unspecified cirrhosis of liver	Cirrhosis is a common underlying cause of portal hypertension; HVPG measurement guides prognosis and management.
`I85.01`	Esophageal varices with bleeding	Variceal bleeding is a complication of portal hypertension; measurement helps assess portal pressure and therapeutic planning.
`R18.8`	Other ascites	Refractory or unexplained ascites may prompt HVPG measurement to confirm portal hypertensive cause.
`K83.1`	Cholangitis	Secondary causes of portal hypertension or biliary pathology may be evaluated in complex cases; EUS-guided assessment can be relevant.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`43238`	Endoscopic ultrasound, diagnostic, with or without FNA, upper GI tract; with esophagogastroduodenoscopy (EGD)	Primary EUS examination code commonly performed immediately before or during which `C9768` is appended for direct HVPG measurement.
`43259`	Endoscopic ultrasound, diagnostic, with or without FNA, lower GI tract (e.g., rectum), with colonoscopy	Alternative EUS route; less common for hepatic access but relevant when lower GI EUS is performed concurrently.
`76937`	Ultrasound guidance for percutaneous procedures (e.g., biopsy, aspiration, injection, localization device), imaging supervision and interpretation	Used when additional ultrasound guidance is documented for vascular access or confirmation during pressure measurement, typically by radiology or sonography.
`36556`	Cannulation of central vein for pressure monitoring, requiring imaging guidance, with placement of monitoring catheter (e.g., for invasive hemodynamic monitoring)	Related to vascular access techniques for pressure monitoring when central venous access or external pressure transduction is required in the same episode of care.
`93970`	Duplex scan of abdominal veins, complete	Supplemental vascular imaging sometimes performed in the workup of portal hypertension and may be part of the same clinical encounter.

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Summary & Overview

HCPCS C9768: Endoscopic Ultrasound-Guided Hepatic Portosystemic Pressure Measurement