Does N28.82 require prior authorization?

No, N28.82 does not require prior authorization (high confidence). Covered without prior authorization.

`N28.82`, Megaloureter

ICD-10-CM

No Prior Auth Required

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).
Duplex scanning is covered only when it meets the reasonable and necessary requirements specified in Local Coverage Determination L33674.
Duplex scanning is covered to evaluate suspected chronic intestinal ischemia in patients with postprandial epigastric or periumbilical pain lasting 1–3 hours and associated weight loss from decreased oral intake.
Duplex scanning is covered to evaluate suspected acute intestinal ischemia in patients with acute crampy or steady epigastric/periumbilical pain with minimal abdominal exam findings and leukocytosis.
Duplex scanning is covered to evaluate possible injury to arterial inflow or venous outflow of abdominal, pelvic and/or retroperitoneal organs after trauma to those regions.

FIRST_COAST-L33674, Duplex Scanning

A57636, Billing and Coding: Duplex Scanning

A55336, Billing and Coding: Retroperitoneal Ultrasound

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

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