P09 ICD-10-CM Code: Abnormal findings on neonatal screening

P09 is the ICD-10-CM diagnosis code for abnormal findings on neonatal screening. P09 sits in the ICD-10-CM chapter for certain conditions originating in the perinatal period (p00-p96), within the section covering abnormal findings on neonatal screening (p09).

Header codes like P09 cannot be reported on claims directly, they organize child codes that share clinical context but the actual diagnosis must be coded to the highest level of specificity supported by the documentation. Coders should look at P09's child codes and select the one that matches the patient's documented presentation, since payers reject header codes submitted as the primary diagnosis. For risk adjustment workflows, header codes never contribute to a Medicare Advantage member's RAF score on their own; only billable child codes that happen to map to a payment HCC affect risk-adjusted plan payments.