Does T79.A3XA require prior authorization?

No, T79.A3XA does not require prior authorization (high confidence). Code is covered without prior authorization.

`T79.A3XA` — Traumatic compartment syndrome of abdomen, initial encounter

ICD-10-CM

No Prior Auth Required

Code is covered without prior authorization (high confidence)

Medical records must document that the ultrasound was limited to retroperitoneal structures when billing CPT 76770/76775/76776, including images/findings demonstrating limitation to the retroperitoneum.
If the exam was expanded to include organs outside the retroperitoneum, documentation must reflect the expansion and support billing a full or limited abdominal ultrasound (CPT 76700/76705/76706).
Claims and documentation should follow the complementary Local Coverage Determination L34577 and any applicable LCD requirements.
This billing and coding article provides guidelines that complement Local Coverage Determination L34415 for CT of the abdomen and pelvis; consult LCD L34415 for specific coverage indications, limitations, and documentation requirements.

Retroperitoneal ultrasound (CPT 76770, 76775, 76776) is covered when the exam is limited solely to retroperitoneal structures.
A full (complete) or limited abdominal ultrasound (CPT 76700, 76705, 76706) is covered when the exam includes organs or structures outside the retroperitoneum or when primary findings involve non-retroperitoneal structures (e.g., gallbladder, liver, spleen, common bile duct).
Non-invasive peripheral venous and hemodialysis access studies are covered when the results will be used to guide the clinical management of the patient.
Duplex scanning and physiologic studies may be performed and reimbursed during the same encounter when physiologic studies are abnormal or when evaluating vascular trauma, thromboembolic events, or aneurysmal disease.
One preoperative scan for hemodialysis access site surgery is covered to plan access creation.
Pre-surgical radial artery conduit mapping may be accompanied by vein mapping only when arterial studies show an unacceptable conduit or insufficient arterial conduit is available for multiple bypass procedures.

A57594 — Billing and Coding: Non-Invasive Peripheral Venous Vascular and Hemodialysis Access Studies

J05

L35751 — Non-Invasive Peripheral Venous Vascular and Hemodialysis Access Studies

J05

A55336 — Billing and Coding: Retroperitoneal Ultrasound

A56421 — Billing and Coding: CT of the Abdomen and Pelvis

L34577 — Retroperitoneal Ultrasound

Ask Verity about documentation requirements, denial risks, or coverage in your state.