P09.4Abnormal findings on neonatal screening for cystic fibrosis

P09.4 is the ICD-10-CM diagnosis code for abnormal findings on neonatal screening for cystic fibrosis. It belongs to category P09 (abnormal findings on neonatal screening), block P09 (abnormal findings on neonatal screening) and chapter 16 (certain conditions originating in the perinatal period). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within P09 (abnormal findings on neonatal screening), P09.4 is specifically for abnormal findings on neonatal screening for cystic fibrosis. Related codes cover for inborn errors of metabolism (P09.1), for congenital endocrine disease (P09.2), for congenital hematologic disorders (P09.3), for critical congenital heart disease (P09.5), abnormal findings on neonatal hearing screening (P09.6), other abnormal findings on neonatal screening (P09.8) and unspecified (P09.9).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 947 (Signs and Symptoms with MCC, relative weight 1.261) and DRG 948 (Signs and Symptoms without MCC, relative weight 0.7835), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It was added in FY2022, effective October 1, 2021.