CG1 Planar Nuclear Medicine Imaging - Endocrine System ICD-10-PCS
The CG1 code range contains 11 ICD-10-PCS codes for Planar Nuclear Medicine Imaging procedures on the endocrine system. 10 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Planar Nuclear Medicine Imaging: Introduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions.
Codes in the CG1 Range 11 codes · 10 billable
- CG1 Nuclear Medicine, Endocrine System, Planar Nuclear Medicine ImagingNon-billable header
- CG111ZZ Planar Nuclear Medicine Imaging of Parathyroid Glands using Technetium 99m (Tc-99m)
- CG11SZZ Planar Nuclear Medicine Imaging of Parathyroid Glands using Thallium 201 (Tl-201)
- CG11YZZ Planar Nuclear Medicine Imaging of Parathyroid Glands using Other Radionuclide
- CG121ZZ Planar Nuclear Medicine Imaging of Thyroid Gland using Technetium 99m (Tc-99m)
- CG12FZZ Planar Nuclear Medicine Imaging of Thyroid Gland using Iodine 123 (I-123)
- CG12GZZ Planar Nuclear Medicine Imaging of Thyroid Gland using Iodine 131 (I-131)
- CG12YZZ Planar Nuclear Medicine Imaging of Thyroid Gland using Other Radionuclide
- CG14GZZ Planar Nuclear Medicine Imaging of Bilateral Adrenal Glands using Iodine 131 (I-131)
- CG14YZZ Planar Nuclear Medicine Imaging of Bilateral Adrenal Glands using Other Radionuclide
- CG1YYZZ Planar Nuclear Medicine Imaging of Endocrine System using Other Radionuclide
About the CG1 Code Range
The ICD-10-PCS root operation Planar Nuclear Medicine Imaging (CG1) refers to a diagnostic procedure that creates two-dimensional images of specific endocrine organs using radioactive tracers. This operation is classified under the Nuclear Medicine section and focuses on imaging the Endocrine System.
This procedure involves administering various radionuclides to evaluate endocrine glands such as the Parathyroid Glands, Thyroid Gland, and Bilateral Adrenal Glands. For example, planar imaging of the parathyroid glands can be done using Technetium 99m (Tc-99m) (CG111ZZ) or Thallium 201 (Tl-201) (CG11SZZ), while the thyroid gland can be imaged with radionuclides like Technetium 99m (CG121ZZ), Iodine 123 (I-123) (CG12FZZ), or Iodine 131 (I-131) (CG12GZZ). Similar codes exist for other radionuclides and endocrine structures. Using these ICD-10-PCS planar nuclear medicine imaging codes ensures precise documentation of the imaging modality, targeted gland, and tracer used for accurate diagnosis and treatment planning.
Questions About This Page
How many billable codes are in the CG1 range?
Of the 11 codes in this range, 10 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the CG1 range classify?
The range classifies Planar Nuclear Medicine Imaging procedures, introduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions, performed on the endocrine system. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
