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CG121ZZ

CG121ZZ — Planar Nuclear Medicine Imaging of Thyroid Gland using Technetium 99m (Tc-99m)

Billable / specific codeICD-10-PCS

CMS abbreviated title: Planar Nucl Med Imag of Thyroid Gland using Technetium 99m

How CG121ZZ is built

Every ICD-10-PCS code is seven independent character positions. Each one is a separate decision, and the meaning of a character depends on the positions before it.

  1. CSectionNuclear Medicine — What family of procedure this is
  2. GBody systemWhich system it acts on
  3. 1Root operationThe objective — the verb of the procedure
  4. 2Body partThe specific site
  5. 1ApproachHow the site was reached
  6. ZDeviceWhat was left in place, if anything
  7. ZQualifierA further distinction where one applies

Codes near CG121ZZ

In CMS’s own ordering, which groups codes that differ by only the last character or two — usually the approach, device or qualifier.

  • CF25YZZTomographic (Tomo) Nuclear Medicine Imaging of Liver using Other Radionuclide
  • CF261ZZTomographic (Tomo) Nuclear Medicine Imaging of Liver and Spleen using Technetium 99m (Tc-99m)
  • CF26YZZTomographic (Tomo) Nuclear Medicine Imaging of Liver and Spleen using Other Radionuclide
  • CF2YYZZTomographic (Tomo) Nuclear Medicine Imaging of Hepatobiliary System and Pancreas using Other Radionuclide
  • CG111ZZPlanar Nuclear Medicine Imaging of Parathyroid Glands using Technetium 99m (Tc-99m)
  • CG11SZZPlanar Nuclear Medicine Imaging of Parathyroid Glands using Thallium 201 (Tl-201)
  • CG11YZZPlanar Nuclear Medicine Imaging of Parathyroid Glands using Other Radionuclide
  • CG121ZZPlanar Nuclear Medicine Imaging of Thyroid Gland using Technetium 99m (Tc-99m)
  • CG12FZZPlanar Nuclear Medicine Imaging of Thyroid Gland using Iodine 123 (I-123)
  • CG12GZZPlanar Nuclear Medicine Imaging of Thyroid Gland using Iodine 131 (I-131)
  • CG12YZZPlanar Nuclear Medicine Imaging of Thyroid Gland using Other Radionuclide
  • CG14GZZPlanar Nuclear Medicine Imaging of Bilateral Adrenal Glands using Iodine 131 (I-131)
  • CG14YZZPlanar Nuclear Medicine Imaging of Bilateral Adrenal Glands using Other Radionuclide
  • CG1YYZZPlanar Nuclear Medicine Imaging of Endocrine System using Other Radionuclide
  • CG211ZZTomographic (Tomo) Nuclear Medicine Imaging of Parathyroid Glands using Technetium 99m (Tc-99m)
ICD-10-PCSFY2026