Does Q91.1 require prior authorization?

No, Q91.1 does not require prior authorization (high confidence). Code is covered without prior authorization.

`Q91.1` — Trisomy 18, mosaicism (mitotic nondisjunction)

ICD-10-CM

No Prior Auth Required

Code is covered without prior authorization (high confidence)

The medical record must contain documentation fully supporting medical necessity, including relevant medical history, physical examination, and results of pertinent diagnostic tests or procedures.
Each echocardiography service requires a formal written report with interpretation retained in the record and copies of image documentation (paper or electronic) available for review.
A complete study must include M-mode and/or 2D measurements of LV end-diastolic diameter, LV end-systolic diameter, LV wall thickness, left atrial diameter, aortic valve excursion, and a qualitative description of LV function, or valid substitutes such as LV volumes, ejection fraction, and mass.
Doppler interrogation must state the modes used and provide both qualitative and quantitative information.

Transthoracic echocardiography (TTE) is covered when the patient's medical record documents medical necessity consistent with the LCD indications for TTE.
Contrast (contrast-enhanced) echocardiography is covered when conventional echocardiographic studies were inconclusive and contrast enhancement is needed to complete diagnostic evaluation.
Repeat echocardiographic studies are covered to monitor changes in cardiac structure or function when there is a change in clinical status or when disease progression is suspected.
CT or MRI scans of the head or neck are covered when the medical record documents the scan is reasonable and necessary for diagnostic evaluation.
Coverage requires documentation supporting clinical indication such as history and physical exam findings, laboratory results, and signs or symptoms that justify the diagnostic test.
G71.21 | Nemaline myopathy

A56781 — Billing and Coding: Transthoracic Echocardiography (TTE)

J06

L33577 — Transthoracic Echocardiography (TTE)

J06

A57306 — Billing and Coding: Transthoracic Echocardiography (TTE)

L34338 — Transthoracic Echocardiography (TTE)

L35175 — MRI and CT Scans of the Head and Neck

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