The numerator criterion is an eGFR and a uACR any time during the measurement year. These separate tests may occur on different dates.
The 4-day proximity language is specific to a reporting option for uACR, where a quantitative urine albumin test and a urine creatinine test may be billed separately. In practice, the quantitative urine albumin and urine creatinine tests are performed on the same date, from the same urine sample, to produce a single ratio. The 4-day proximity language intends to account only for potential billing lags between the separate quantitative urine albumin and urine creatinine administrative codes that indicate a single uACR evaluation; it is not intended for separate samples from different dates.
ALL MY 2024