On April 8, 2026, NHS England published the 2026/27 National Genomic Test Directory. The key update concerns hematological and neurological cancers, for which separate files were published with a significant restructure: new genomic test (GT) codes were introduced, gathered into new clinically relevant test packages (TP), and mapped to existing M-codes. Furthermore, multiple changes were made in the rare and inherited diseases directory, including the addition of several new codes.