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New Category III Codes

CPT contains Category III emerging technology codes which allow the collection of data on new services and procedures that would otherwise be treated as unlisted or miscellaneous. Category III codes are probationary – they expire in five years if the service or procedure is not elevated to a Level 1 code through widespread adoption and recognition.

Unlike category 1 codes which are only published in January, the American Medical Association (AMA) releases Category III codes in January and July by posting them on their website at www.ama-assn.org/.

The AMA released the following new Category III codes on January 1, 2013 with an implementation date of July 1, 2013. These new codes will appear in the 2014 CPT manual.

  • 0329T Monitoring of intraocular pressure for 24 hours or longer, unilateral or bilateral, with interpretation and report.
  • 0330T Tear film imaging, unilateral or bilateral, with interpretation and report.
  • 0333T Visual evoked potential, screening of visual acuity, automated.

Reimbursement of Category III codes is at the discretion of the payer. They are typically considered non-covered. The assignment of a Category III code does not mean that the service or procedure is endorsed, approved, safe or has applicability to clinical practice. The utility of a new procedure only becomes known with experience, time and careful study.

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