NHS Digital is responsible for the publication and maintenance of the NHS Information Standards ICD and OPCS-4 on behalf of the United Kingdom, as well as other products to support the implementation of these clinical classifications and derivative products.
The NHS Digital Terminology and Classifications Delivery Service sets the national clinical coding standards for these classifications in England and is the definitive source of these standards and guidance.
Releases of items within these categories contain essential data files and associated products to support the clinical classifications, along with guidance on how to use them effectively.
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