Does 81373 require prior authorization?

No, 81373 does not require prior authorization (high confidence). Code is covered without prior authorization.

What is the Medicare reimbursement rate for 81373?

Medicare facility rate: N/A. Non-facility rate: N/A. Work RVU: 0.00.

HCPCS/CPT

No Prior Auth Required

Code is covered without prior authorization (high confidence)

Work RVU

0.00

Facility

N/A

Non-Facility

N/A

The medical record must document that the testing is expected to influence treatment of the condition for which the test is ordered and include an ordering physician/NPP requisition containing the relevant ICD-10-CM diagnosis code.
Ordering physician/NPP documentation should include history and physical or exam findings, problems/diagnoses, and relevant data (e.g., lab tests, imaging) that support medical necessity.
Performing laboratories must retain accreditation, test requisition, test records/procedures, preliminary and final reports, and quality control records and provide them when requested.
For laboratory-developed tests (LDTs)/protocols, documentation must include the diagnostic test/assay, lab/manufacturer, comparable assays (if relevant), assay description, analytical validity, clinical validity, and clinical utility.

When a molecular panel of 5–50 genes is ordered, bill the appropriate panel CPT code (81445, 81449, 81450, or 81451) instead of submitting individual single-gene CPT codes.
When 51 or more genes are ordered for molecular biomarkers, bill the appropriate large-panel CPT code (81455 or 81456) rather than individual gene codes.
When a panel contains more than one but fewer than five genes, use the corresponding existing panel CPT code or CPT 81479 (unlisted molecular pathology procedure) if no specific panel CPT exists.
Use modifier 91 only when a test is performed more than once on the same day for the same patient and the repeat testing is necessary to obtain multiple results in the course of treatment.
Coverage determinations for biomarker testing follow Local Coverage Determination L35062 and services are covered when reasonable and necessary per that LCD.
HLA testing performed as part of solid-organ transplant acquisition services (kidney, heart, lung, heart/lung, liver, pancreas, pancreas/kidney, intestinal/multi‑visceral) is covered when billed by an approved transplant center as part of the organ acquisition service, not as a standalone lab claim.

A57851 — Billing and Coding: MolDX: HLA Testing for Transplant Histocompatibility

J05

L35000 — Molecular Pathology Procedures

J06

A59926 — Billing and Coding: Molecular Pathology Procedures

J06

A56199 — Billing and Coding: Molecular Pathology Procedures

J06

L34519

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