According to CMS blueprint v14.0, "​Assessment instrument question codes need to use Logical Observation Identifiers Names and Codes (LOINC) as clinical vocabulary standard." In Perinatal (PC) measures, Systematized Nomenclature of Medicine (SNOMED) observable entity codes are used for "Assessment, Performed": "Estimated Gestational Age at Birth"] and "Assessment, Performed": "Estimated Gestational Age at Delivery"].

According to CMS blueprint v14.0, "​Assessment instrument question codes need to use LOINC as clinical vocabulary standard." We will replace the following value sets codes with LOINC codes: 1. Replace "Estimated Gestational Age at Delivery" using value set "2.16.840.1.113762.1.4.1045.26" with the following LOINC codes: -18185-9* - Gestational age - Mom Record -11884-4* - Gestational age, clinical estimated - Mom Record -11885-1 - Gestational age, estimated from LMP - Mom Record -49051-6* - Gestational age in Weeks - Mom Record 2. Replace "Estimated Gestational Age at Birth" using value set "2.16.840.1.113762.1.4.1045.47" with the following LOINC codes: 76516-4 - Gestational age at birth - Baby Record Because the updated value set contains a single LOINC code, we need use a direct reference code in the measure as CODE:/CodeSystem/LOINC/Version/2.64/Code/76516-4/Info Rationale: To align with the CMS blueprint requirement to have assessment instrument question codes use LOINC as clinical vocabulary standard.