Thank you for your inquiry for CMS153v12 Chlamydia Screening in Women. Codes that indicate a "presence" mean that the test is for the "presence" of something, and the results can be "detected" or "not detected. Therefore, it is not accurate to state that patients will only be included in the numerator if they have positive findings. Value sets and codes for 2024 eCQM reporting once finalized cannot be amended. Clinically equivalent services may be mapped to the codes used in a measure's value sets to satisfy a value set requirement. For example, LOINC code 36903-3 which is defined as "Chlamydia trachomatis and Neisseria gonorrhoeae DNA [Identifier] in Specimen by NAA with probe detection" could be mapped to another code in the "Chlamydia Screening" (2.16.840.1.113883.3.464.1003.110.12.1052) value set. You can reference the applicable codes containing these value sets on the Value Set Authority Center (VSAC) at https://vsac.nlm.nih.gov/ . Once in VSAC, click on the “Search Value Sets” tab and enter the value set ID to review codes included in the respective value set. We are unable to provide specific guidance related to the mapping of codes. We recommend you consult with your EHR vendor and clinical partners. If mapping is conducted, you should maintain documentation in case of a CMS audit.