Does K80.21 require prior authorization?

No, K80.21 does not require prior authorization (high confidence). Covered without prior authorization.

`K80.21`, Calculus of gallbladder without cholecystitis with obstruction

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 guidance complements Local Coverage Determination L34434; follow LCD L34434 for clinical coverage criteria and required documentation for claims.

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).
Esophagogastroduodenoscopy (EGD) is covered when it meets the reasonable and necessary requirements specified in Local Coverage Determination L33583.
Upper gastrointestinal endoscopy (diagnostic or therapeutic) is covered when determined reasonable and necessary per Local Coverage Determination L35350.
Vitamin D assay testing is payable under Medicare Part B when performed in an office (POS 11), independent clinic (POS 49), Federally Qualified Health Center (POS 50), or independent laboratory (POS 81).
Non-physician practitioners (e.g., nurse practitioners, clinical nurse specialists, physician assistants) may certify, order, and establish the plan of care for Vitamin D assay testing as authorized by State law (outpatient settings other than CORFs).

WPS-J5-L34658, Vitamin D Assay Testing

A57484, Billing and Coding: Vitamin D Assay Testing

WPS-J8-L34658, Vitamin D Assay Testing

A57063, Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy

FIRST_COAST-L33583

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