C91Nuclear Medicine, Ear, Nose, Mouth and Throat, Planar Nuclear Medicine Imaging

Nuclear Medicine›Ear, Nose, Mouth and Throat›Planar Nuclear Medicine Imaging
  • Non-Billable Header
ICD-10-PCS C91
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

C91 is a non-billable ICD-10-PCS code that heads the group for Nuclear Medicine, Ear, Nose, Mouth and Throat, Planar Nuclear Medicine Imaging, so it cannot be submitted on a claim; a more specific seven-character code is required. The root operation Planar Nuclear Medicine Imaging involves introduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions.

Code Identity

ICD-10-PCS Code
C91
Billable Status
No — Non-Billable Header
Code Describes
Nuclear Medicine, Ear, Nose, Mouth and Throat, Planar Nuclear Medicine Imaging
Short Description
Nuclear Medicine, ENT & Mouth, Planar Nucl Med Imag

PCS Table Breakdown

Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.

PositionDesignationValueMeaning
1SectionCNuclear Medicine
2Body System9Ear, Nose, Mouth and Throat
3Operation1Planar Nuclear Medicine Imaging

Similar Procedure Codes

Questions About C91

Is C91 a billable code?

No. C91 is an incomplete heading for Nuclear Medicine, Ear, Nose, Mouth and Throat, Planar Nuclear Medicine Imaging and cannot be submitted on a claim. A complete seven-character code is required, such as C91B1ZZ, C91BYZZ, and C91YYZZ.