E77

E77 is a designation used in different classification schemes and does not refer to a single entity. It is most commonly encountered as the code for a European route in the International E-road network and as an ICD-10 medical code for certain metabolic disorders. The exact meaning depends on the context, with transportation and healthcare being the main areas where the label appears.

European route E77 is part of the trans-European road network designated by the United Nations Economic Commission for Europe. As with other E-roads, its precise alignment is defined by national authorities and can be subject to upgrades or re-routings. The route connects multiple regions across Europe and intersects with other E-roads, serving to facilitate cross-border travel and freight movement. Information about the current path and status of E77 is maintained by national road administrations and can be updated as infrastructure works proceed.

In the ICD-10 medical coding system, E77 stands for “Other disorders of purine and pyrimidine metabolism” within the chapter on endocrine, nutritional and metabolic diseases. The code is used in medical records and reporting to classify metabolic conditions affecting the metabolism of purines and pyrimidines, which has implications for nucleotide synthesis and uric acid handling. Clinicians assign specific subcodes under E77 as more detail about a patient’s condition becomes available.

Because E77 can refer to multiple, unrelated designations, the intended meaning should be inferred from context, whether it concerns transportation infrastructure or medical coding.