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Official Description

Laryngoscopy, indirect; with biopsy

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 31510 involves an indirect laryngoscopy with biopsy, which is a diagnostic examination of the larynx (voice box) and surrounding structures. During this procedure, the physician assesses the vocal cords, tongue, and the upper part of the throat for any abnormalities, such as signs of disease or injury. The patient is typically seated comfortably in a chair and is instructed to extend their tongue to facilitate the examination. The physician utilizes a small round mirror positioned at the back of the throat, along with a light source, to visualize the laryngeal area. In some cases, a rigid endoscope may be employed to enhance the visualization of the structures being examined. To improve the clarity of the vocal cords during the examination, the patient may be asked to produce a high-pitched 'eee' sound. The key aspect of this procedure is the biopsy component, where a tissue sample is collected from the examined area for further pathological analysis. This allows for the identification of any potential diseases or conditions affecting the larynx and surrounding tissues.

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